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Fiber-reinforced composite post removal using guided endodontics: a case report
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Changgi Cho, Hyo Jin Jo, Jung-Hong Ha
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Restor Dent Endod 2021;46(4):e50. Published online September 23, 2021
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DOI: https://doi.org/10.5395/rde.2021.46.e50
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Although several techniques have been proposed to remove fiber-reinforced composite (FRC) post, no safe and efficient technique has been established. Recently, a guided endodontics technique has been introduced in cases of pulp canal obliteration. This study describes 2 cases of FRC post removal from maxillary anterior teeth using this guided endodontics technique with a dental operating microscope. Optically scanned data set from plaster cast model was superimposed with the data set of cone-beam computed tomography. By implant planning software, the path of a guide drill was selected. Based on them, a customized stent was fabricated and utilized to remove the FRC post. Employing guided endodontics, the FRC post was removed quickly and safely with minimizing the loss of the remaining tooth structure. The guided endodontics was a useful option for FRC post removal.
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Citations
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- Application of 3D-printed resin guides for the removal of molar fiber posts
Yumin Wu, Lumei Huang, Bing Ge, Yuhang Zhang, Juan Zhang, Haifeng Xie, Ye Zhu, Chen Chen Journal of Dentistry.2025; 153: 105462. CrossRef - Impact of Guided Endodontics on the Success of Endodontic Treatment: An Umbrella Review of Systematic Reviews and Meta-Analyses
Aakansha Puri, Dax Abraham, Alpa Gupta Cureus.2024;[Epub] CrossRef - Endodontia guiada por tomografia computadorizada de feixe cônico
Maysa Gaudereto Laurindo, Celso Neiva Campos, Anamaria Pessoa Pereira Leite, Paola Cantamissa Rodrigues Ferreira Cadernos UniFOA.2024; 19(54): 1. CrossRef - Removal of fiber posts using conventional versus guided endodontics: a comparative study of dentin loss and complications
R. Krug, F. Schwarz, C. Dullin, W. Leontiev, T. Connert, G. Krastl, F. Haupt Clinical Oral Investigations.2024;[Epub] CrossRef - Accuracy and Efficiency of the Surgical-Guide-Assisted Fiber Post Removal Technique for Anterior Teeth: An Ex Vivo Study
Ryota Ito, Satoshi Watanabe, Kazuhisa Satake, Ryuma Saito, Takashi Okiji Dentistry Journal.2024; 12(10): 333. CrossRef - Endodontic management of severely calcified mandibular anterior teeth using guided endodontics: A report of a case and a review of the literature
Mina Davaji, Sahar Karimpour Saudi Endodontic Journal.2024; 14(2): 245. CrossRef - A laboratory study comparing the static navigation technique using a bur with a conventional freehand technique using ultrasonic tips for the removal of fibre posts
Francesc Abella Sans, Zeena Tariq Alatiya, Gonzalo Gómez Val, Venkateshbabu Nagendrababu, Paul Michael Howell Dummer, Fernando Durán‐Sindreu Terol, Juan Gonzalo Olivieri International Endodontic Journal.2024; 57(3): 355. CrossRef - A three‐dimensional printed assembled sleeveless guide system for fiber‐post removal
Yang Xue, Lei Zhang, Ye Cao, Yongsheng Zhou, Qiufei Xie, Xiaoxiang Xu Journal of Prosthodontics.2023; 32(2): 178. CrossRef - Accuracy of a 3D printed sleeveless guide system used for fiber post removal: An in vitro study
Siyi Mo, Yongwei Xu, Lei Zhang, Ye Cao, Yongsheng Zhou, Xiaoxiang Xu Journal of Dentistry.2023; 128: 104367. CrossRef - Expert consensus on digital guided therapy for endodontic diseases
Xi Wei, Yu Du, Xuedong Zhou, Lin Yue, Qing Yu, Benxiang Hou, Zhi Chen, Jingping Liang, Wenxia Chen, Lihong Qiu, Xiangya Huang, Liuyan Meng, Dingming Huang, Xiaoyan Wang, Yu Tian, Zisheng Tang, Qi Zhang, Leiying Miao, Jin Zhao, Deqin Yang, Jian Yang, Junqi International Journal of Oral Science.2023;[Epub] CrossRef - Knowledge, attitude, practice and perception survey on post and core restorations
Aruna Kumari Veronica, Shamini Sai, Anand V Susila Endodontology.2023; 35(3): 228. CrossRef
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Screw-in forces during instrumentation by various file systems
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Jung-Hong Ha, Sang Won Kwak, Sung-Kyo Kim, Hyeon-Cheol Kim
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Restor Dent Endod 2016;41(4):304-309. Published online November 8, 2016
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DOI: https://doi.org/10.5395/rde.2016.41.4.304
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Abstract
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The purpose of this study was to compare the maximum screw-in forces generated during the movement of various Nickel-Titanium (NiTi) file systems. Materials and MethodsForty simulated canals in resin blocks were randomly divided into 4 groups for the following instruments: Mtwo size 25/0.07 (MTW, VDW GmbH), Reciproc R25 (RPR, VDW GmbH), ProTaper Universal F2 (PTU, Dentsply Maillefer), and ProTaper Next X2 (PTN, Dentsply Maillefer, n = 10). All the artificial canals were prepared to obtain a standardized lumen by using ProTaper Universal F1. Screw-in forces were measured using a custom-made experimental device (AEndoS-k, DMJ system) during instrumentation with each NiTi file system using the designated movement. The rotation speed was set at 350 rpm with an automatic 4 mm pecking motion at a speed of 1 mm/sec. The pecking depth was increased by 1 mm for each pecking motion until the file reach the working length. Forces were recorded during file movement, and the maximum force was extracted from the data. Maximum screw-in forces were analyzed by one-way ANOVA and Tukey's post hoc comparison at a significance level of 95%. ResultsReciproc and ProTaper Universal files generated the highest maximum screw-in forces among all the instruments while M-two and ProTaper Next showed the lowest (p < 0.05). ConclusionsGeometrical differences rather than shaping motion and alloys may affect the screw-in force during canal instrumentation. To reduce screw-in forces, the use of NiTi files with smaller cross-sectional area for higher flexibility is recommended.
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Jeyi Song, Ji-Hyun Jang, Seok Woo Chang, Shin Hye Chung, Soram Oh BMC Oral Health.2025;[Epub] CrossRef - Screw-in force, torque generation, and performance of glide-path files with three rotation kinetics
Jee-Yeon Woo, Ji-Hyun Jang, Seok Woo Chang, Soram Oh Odontology.2024; 112(3): 761. CrossRef - Comparative evaluation of stress distribution against the root canal wall at three different levels using novel NiTi rotary files – A finite element analysis
Rimjhim Singh, Sandeep Dubey, Palak Singh, Praveen Singh Samant, Suparna Ganguly Saha Journal of Conservative Dentistry and Endodontics.2024; 27(1): 62. CrossRef - Restoration of teeth lacking complete ferrules using cast precious metal alloy post-and-cores and knife-edged crowns: A retrospective clinical study
Fangyue Xiang, Keying Shi, Haoyang Hua, Jing Zhao, Yuanna Zheng The Journal of Prosthetic Dentistry.2024;[Epub] CrossRef - Effect of Periodic Changes in Rotation Speed on Torsional Stress and Screw-in Force by Alternative Rotation Technique
Jung-Hong Ha, Hyo-Jin Jo, Sang Won Kwak, Asgeir Sigurdsson, Hyeon-Cheol Kim Journal of Endodontics.2023; 49(1): 77. CrossRef - A Comparative Evaluation of the Apically Extruded Debris from Root Canals Prepared by R-Motion NiTi File System
Farah B. Al-Saffar, Hikmet A. Al-Gharrawi, Luca Testarelli International Journal of Dentistry.2023; 2023: 1. CrossRef - Effect of Rotational Modes on Torque/Force Generation and Canal Centering Ability during Rotary Root Canal Instrumentation with Differently Heat-Treated Nickel–Titanium Instruments
Satoshi Omori, Arata Ebihara, Keiko Hirano, Yuka Kasuga, Hayate Unno, Taro Nakatsukasa, Shunsuke Kimura, Keiichiro Maki, Takao Hanawa, Takashi Okiji Materials.2022; 15(19): 6850. CrossRef - Effect of Core Mass and Alloy on Cyclic Fatigue Resistance of Different Nickel-Titanium Endodontic Instruments in Matching Artificial Canals
Sebastian Bürklein, Lennart Zupanc, David Donnermeyer, Karsten Tegtmeyer, Edgar Schäfer Materials.2021; 14(19): 5734. CrossRef - Comparison of Torque, Screw-in Force, and Shaping Ability of Glide Path Instruments in Continuous Rotation and Optimum Glide Path Motion
Pyae Hein Htun, Arata Ebihara, Keiichiro Maki, Shunsuke Kimura, Miki Nishijo, Moe Sandar Kyaw, Takashi Okiji Journal of Endodontics.2021; 47(1): 94. CrossRef - Analysis of Torque and Force Induced by Rotary Nickel-Titanium Instruments during Root Canal Preparation: A Systematic Review
Myint Thu, Arata Ebihara, Sherif Adel, Takashi Okiji Applied Sciences.2021; 11(7): 3079. CrossRef - Influence of rotational speed on torque/force generation and shaping ability during root canal instrumentation of extracted teeth with continuous rotation and optimum torque reverse motion
M. S. Kyaw, A. Ebihara, Y. Kasuga, K. Maki, S. Kimura, P. H. Htun, T. Nakatsukasa, T. Okiji International Endodontic Journal.2021; 54(9): 1614. CrossRef - Effect of Optimum Torque Reverse Motion on Torque and Force Generation during Root Canal Instrumentation with Crown-down and Single-length Techniques
Shunsuke Kimura, Arata Ebihara, Keiichiro Maki, Miki Nishijo, Daisuke Tokita, Takashi Okiji Journal of Endodontics.2020; 46(2): 232. CrossRef - Comparative analysis of torque and apical force to assess the cutting behaviour of ProTaper Next and ProTaper Universal endodontic instruments
Gustavo de Cristofaro Almeida, Diego Pinheiro Aun, Pedro Damas Resende, Isabella Faria da Cunha Peixoto, Ana Cecília Diniz Viana, Vicente Tadeu Lopes Buono, Maria Guiomar de Azevedo Bahia Australian Endodontic Journal.2020; 46(1): 52. CrossRef - Enhanced root canal-centering ability and reduced screw-in force generation of reciprocating nickel-titanium instruments with a post-machining thermal treatment
Keiichiro MAKI, Arata EBIHARA, Shunsuke KIMURA, Miki NISHIJO, Daisuke TOKITA, Kana MIYARA, Takashi OKIJI Dental Materials Journal.2020; 39(2): 251. CrossRef - Ex-Vivo Comparison of Torsional Stress on Nickel–Titanium Instruments Activated by Continuous Rotation or Adaptive Motion
Joo Yeong Lee, Sang Won Kwak, Jung-Hong Ha, Hyeon-Cheol Kim Materials.2020; 13(8): 1900. CrossRef - Evaluation of stress distribution in nickel-titanium rotary instruments with different geometrical designs subjected to bending and torsional load: a finite element study
Manar Galal, Tamer M. Hamdy Bulletin of the National Research Centre.2020;[Epub] CrossRef - Assessment of mechanical properties of WaveOne Gold Primary reciprocating instruments
Tong FANGLI, Keiichiro MAKI, Shunsuke KIMURA, Miki NISHIJO, Daisuke TOKITA, Arata EBIHARA, Takashi OKIJI Dental Materials Journal.2019; 38(3): 490. CrossRef - Comparison of Screw-In Forces during Movement of Endodontic Files with Different Geometries, Alloys, and Kinetics
Sang Won Kwak, Chan-Joo Lee, Sung Kyo Kim, Hyeon-Cheol Kim, Jung-Hong Ha Materials.2019; 12(9): 1506. CrossRef - Gripping the Gripped: Removal of Foreign Bodies from Root Canal System
Shweta Jain, Sachin Jain, Shikha Jain, Sophia Thakur Dental Research and Management.2019; : 13. CrossRef - Mechanical Properties of Orifice Preflaring Nickel-titanium Rotary Instrument Heat Treated Using T-Wire Technology
Maamoun Ataya, Jung-Hong Ha, Sang Won Kwak, Ibrahim H. Abu-Tahun, Rashid El Abed, Hyeon-Cheol Kim Journal of Endodontics.2018; 44(12): 1867. CrossRef - How biomechanics can affect the endodontic treated teeth and their restorative procedures?
Carlos José Soares, Monise de Paula Rodrigues, André Luis Faria-e-Silva, Paulo Cesar Freitas Santos-Filho, Crisnicaw Veríssimo, Hyeon-Cheol Kim, Antheunis Versluis Brazilian Oral Research.2018;[Epub] CrossRef - Evaluation of selected mechanical properties of NiTi rotary glide path files manufactured from controlled memory wires
Miki NISHIJO, Arata EBIHARA, Daisuke TOKITA, Hisashi DOI, Takao HANAWA, Takashi OKIJI Dental Materials Journal.2018; 37(4): 549. CrossRef - Nickel–titanium instruments in endodontics: a concise review of the state of the art
Giulio Gavini, Marcelo dos Santos, Celso Luis Caldeira, Manoel Eduardo de Lima Machado, Laila Gonzales Freire, Elaine Faga Iglecias, Ove Andrea Peters, George Táccio de Miranda Candeiro Brazilian Oral Research.2018;[Epub] CrossRef - Dynamic Torque and Vertical Force Analysis during Nickel-titanium Rotary Root Canal Preparation with Different Modes of Reciprocal Rotation
Daisuke Tokita, Arata Ebihara, Miki Nishijo, Kana Miyara, Takashi Okiji Journal of Endodontics.2017; 43(10): 1706. CrossRef
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Preference of undergraduate students after first experience on nickel-titanium endodontic instruments
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Sang Won Kwak, Gary Shun-Pan Cheung, Jung-Hong Ha, Sung Kyo Kim, Hyojin Lee, Hyeon-Cheol Kim
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Restor Dent Endod 2016;41(3):176-181. Published online June 23, 2016
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DOI: https://doi.org/10.5395/rde.2016.41.3.176
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This study aimed to compare two nickel-titanium systems (rotary vs. reciprocating) for their acceptance by undergraduate students who experienced nickel-titanium (NiTi) instruments for the first time. Materials and MethodsEighty-one sophomore dental students were first taught on manual root canal preparation with stainless-steel files. After that, they were instructed on the use of ProTaper Universal system (PTU, Dentsply Maillefer), then the WaveOne (WO, Dentsply Maillefer). They practiced with each system on 2 extracted molars, before using those files to shape the buccal or mesial canals of additional first molars. A questionnaire was completed after using each file system, seeking students' perception about 'Ease of use', 'Flexibility', 'Cutting-efficiency', 'Screwing-effect', 'Feeling-safety', and 'Instrumentation-time' of the NiTi files, relative to stainless-steel instrumentation, on a 5-point Likert-type scale. They were also requested to indicate their preference between the two systems. Data was compared between groups using t-test, and with Chi-square test for correlation of each perception value with the preferred choice (p = 0.05). ResultsAmong the 81 students, 55 indicated their preferred file system as WO and 22 as PTU. All scores were greater than 4 (better) for both systems, compared with stainless-steel files, except for 'Screwing-effect' for PTU. The scores for WO in the categories of 'Flexibility', 'Screwing-effect', and 'Feeling-safety' were significantly higher scores than those of PTU. A significant association between the 'Screwing-effect' and students' preference for WO was observed. ConclusionsNovice operators preferred nickel-titanium instruments to stainless-steel, and majority of them opted for reciprocating file instead of continuous rotating system.
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- Endodontic Procedural Errors and Associated Factors among Undergraduate Dental Students: A Cross-sectional Study
Vivek Padmanabhan, Md Sofiqul Islam, Mohamed A Elsayed, Duaa R Saleh, Amal M Alnahdi The Journal of Contemporary Dental Practice.2024; 24(12): 998. CrossRef - Clinicians’ perspectives, inducements, preferences, and clinical experiences regarding the use of electronic apex locator and apex locator integrated engine-driven instrumentation: a cross-sectional study
Sena Kaşıkçı, Sena Kolunsağ Özbek, Ebru Şirinoğlu, Olcay Özdemir BMC Oral Health.2024;[Epub] CrossRef - Evaluation and Comparison of Manual and Mechanical Endodontic Instrumentation Completed by Undergraduate Dental Students on Endodontic Blocks
António Ginjeira, Abayomi O. Baruwa, Karla Baumotte Dentistry Journal.2024; 12(11): 363. CrossRef - The first experiences of preclinical dentistry students with rotary instruments: A pilot study
Işıl Kaya Büyükbayram, Gizem Çolakoğlu, Sana Mahroos Al-Shammari, Katia Stoicefidis Saudi Endodontic Journal.2024; 14(2): 205. CrossRef - First Experience of an Undergraduate Dental Student with a Reciprocating System in Simulated Root Canals—A Pilot Study
Ana Rita Arede, Inês Ferreira, Ana Cristina Braga, Irene Pina-Vaz Applied Sciences.2023; 13(8): 4848. CrossRef - Effect on undergraduate student self-confidence in using 3D printed primary molars for root canal treatment simulation training
C. Delfosse, T. Marquillier, S. Ndoye, P.-Y. Cousson, M. Hennequin, C. Catteau European Archives of Paediatric Dentistry.2023; 24(1): 105. CrossRef - Influence of operator expertise on glide path and root canal preparation of curved root canals with rotary and reciprocating motions
Ana Belén Dablanca‐Blanco, Ana Arias, María José Ginzo‐Villamayor, María Consuelo Pérez, Pablo Castelo‐Baz, Benjamín Martín‐Biedma Australian Endodontic Journal.2022; 48(1): 37. CrossRef - Quality of root canal treatment performed by undergraduate students using nickel‐titanium reciprocating versus hand instruments
Seniha Miçooğulları Kurt, Gözde Kandemir Demirci, Burcu Serefoglu, Mehmet Emin Kaval, Pelin Güneri, Mehmet Kemal Çalışkan Journal of Dental Education.2022; 86(12): 1662. CrossRef - Radiographic assessment of endodontic mishaps in an undergraduate student clinic: a 2-year retrospective study
Manal Matoug-Elwerfelli, Ahmed Abdou, Wejdan Almutairi, Malak Alhuthayli, Shaikhah Aloyaynaa, Rahaf Almohareb PeerJ.2022; 10: e13858. CrossRef - Ex vivo shaping ability of reciprocating instruments operated by new users: Reciproc versus WaveOne
Mary S. H. Lam, Jeffrey W. W. Chang, Gary S. P. Cheung Clinical Oral Investigations.2021; 25(5): 2791. CrossRef - Body temperature fatigue behaviour of reciprocating and rotary glide path instruments in sodium hypochlorite solutions alone or combined with etidronate
Dario Perez‐Villalba, José C. Macorra, Juan J. Perez‐Higueras, Ove A. Peters, Ana Arias Australian Endodontic Journal.2021; 47(3): 450. CrossRef - Undergraduate Students’ Acceptance of a Reciprocating One-File System for Endodontic Treatment
Benjamin Mahmoodi, Adriano Azaripour, Kawe Sagheb, Keyvan Sagheb, Brita Willershausen, Jens Weusmann European Journal of Dentistry.2020; 14(03): 393. CrossRef - Fracture of endodontic instruments - Part 1: Literature review on factors that influence instrument breakage
Maheshan Pillay, Martin Vorster, Peet J Van der Vyver South African Dental Journal.2020; 75(10): 553. CrossRef - A comparative study of root canal shaping using protaper universal and protaper next rotary files in preclinical dental education
Gül Çelik, Feyza Özdemir Kısacık, Emir Faruk Yılmaz, Arife Mersinlioğlu, İhsan Furkan Ertuğrul, Hikmet Orhan PeerJ.2019; 7: e7419. CrossRef - Undergraduate dentistry students’ perception of difficulties regarding endodontic treatment
Lorrane G. Tavares, Stella M. F. Lima, Miriane G. Lima, Marcos P. Arruda, Thiago C. Menegazzi, Taia M. B. Rezende Australian Endodontic Journal.2019; 45(1): 98. CrossRef - First Experience of Rotary Nickel Titanium Root Canal Instrumentation Performed by Undergraduate Students and General Dentists
marwa sharaan, Noreen Kamel, Dimitrios Tziafas Journal of Dentistry and Oral Care.2017; 3(2): 1. CrossRef
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Proximity of the mandibular molar root apex from the buccal bone surface: a cone-beam computed tomographic study
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Dokyung Kim, Jung-Hong Ha, Myoung-Uk Jin, Young-Kyung Kim, Sung Kyo Kim
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Restor Dent Endod 2016;41(3):182-188. Published online July 14, 2016
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DOI: https://doi.org/10.5395/rde.2016.41.3.182
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Abstract
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The purpose of this study was to evaluate the proximity of the mandibular molar apex to the buccal bone surface in order to provide anatomic information for apical surgery. Materials and MethodsCone-beam computed tomography (CBCT) images of 127 mandibular first molars and 153 mandibular second molars were analyzed from 160 patients' records. The distance was measured from the buccal bone surface to the root apex and the apical 3.0 mm on the cross-sectional view of CBCT. ResultsThe second molar apex and apical 3 mm were located significantly deeper relative to the buccal bone surface compared with the first molar (p < 0.01). For the mandibular second molars, the distance from the buccal bone surface to the root apex was significantly shorter in patients over 70 years of age (p < 0.05). Furthermore, this distance was significantly shorter when the first molar was missing compared to nonmissing cases (p < 0.05). For the mandibular first molars, the distance to the distal root apex of one distal-rooted tooth was significantly greater than the distance to the disto-buccal root apex (p < 0.01). In mandibular second molar, the distance to the apex of C-shaped roots was significantly greater than the distance to the mesial root apex of non-C-shaped roots (p < 0.01). ConclusionsFor apical surgery in mandibular molars, the distance from the buccal bone surface to the apex and apical 3 mm is significantly affected by the location, patient age, an adjacent missing anterior tooth, and root configuration.
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Citations
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- Expert consensus on intentional tooth replantation
Zhengmei Lin, Dingming Huang, Shuheng Huang, Zhi Chen, Qing Yu, Benxiang Hou, Lihong Qiu, Wenxia Chen, Jiyao Li, Xiaoyan Wang, Zhengwei Huang, Jinhua Yu, Jin Zhao, Yihuai Pan, Shuang Pan, Deqin Yang, Weidong Niu, Qi Zhang, Shuli Deng, Jingzhi Ma, Xiuping International Journal of Oral Science.2025;[Epub] CrossRef - Outcome of intentional replantation of endodontically treated teeth with periapical pathosis: A systematic review and meta‐analysis
Faizan Javed, Kamil Zafar, Farhan R. Khan Australian Endodontic Journal.2023; 49(S1): 494. CrossRef - Proximity of maxillary molar apexes to the cortical bone surface and the maxillary sinus
Han Shin Lee, Dokyung Kim, Sung Kyo Kim Restorative Dentistry & Endodontics.2022;[Epub] CrossRef - Alveolar bone thickness overlying healthy maxillary and mandibular teeth: A systematic review and meta-analysis
Marziyeh Shafizadeh, Azita Tehranchi, Armin Shirvani, Saeed Reza Motamedian International Orthodontics.2021; 19(3): 389. CrossRef - Relationship between the anatomic structures and mandibular posterior teeth for endodontic surgery in a Turkish population: a cone-beam computed tomographic analysis
Zeliha Uğur Aydın, Duygu Göller Bulut Clinical Oral Investigations.2019; 23(9): 3637. CrossRef
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Esthetic enhancement of a traumatized anterior tooth with a combination of forced eruption and tooth alignment: a case report
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So-Hee Kang, Jung-Hong Ha, Myoung-Uk Jin, Sung-Kyo Kim, Young-Kyung Kim
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Restor Dent Endod 2016;41(3):210-217. Published online June 1, 2016
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DOI: https://doi.org/10.5395/rde.2016.41.3.210
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Exposing sound structure of a subgingivally fractured tooth using orthodontic extrusion is considered to be a conservative way to re-establish biologic width without sacrificing esthetics or jeopardizing periodontal support of neighboring teeth. When a misaligned tooth is traumatically involved, a more comprehensive approach combining tooth extrusion and re-alignment may be necessary for a successful restorative outcome. This case report describes a successful esthetic management of a patient with complicated crown-root fracture on the maxillary right central incisor and pre-existing malocclusion in the maxillary anterior region. Forced eruption along with re-alignment of teeth by orthodontic movement seems to allow re-positioning of the fracture line to a favorable position and correction of crowding, providing a better esthetic result.
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- Effects of systematic bisphosphonate use in patients under orthodontic treatment: a systematic review
Vasileios F Zymperdikas, Maria P Yavropoulou, Eleftherios G Kaklamanos, Moschos A Papadopoulos European Journal of Orthodontics.2020; 42(1): 60. CrossRef - In vitro retention efficiency of temporary type zinc oxide cement for orthodontic forced eruption
Renato Nieto-Aguilar, Deyanira Serrato-Ochoa, Rafael Medina-Navarro, Asdrúbal Aguilera-Méndez, Karina Denisse Morales-Soto, Juan Pablo Loyola-Rodriguez, Antonio Campos, Miguel Alaminos International Orthodontics.2019; 17(1): 96. CrossRef
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Effect of repetitive pecking at working length for glide path preparation using G-file
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Jung-Hong Ha, Hyo-Jin Jeon, Rashid El Abed, Seok-Woo Chang, Sung-Kyo Kim, Hyeon-Cheol Kim
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Restor Dent Endod 2015;40(2):123-127. Published online January 7, 2015
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DOI: https://doi.org/10.5395/rde.2015.40.2.123
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Glide path preparation is recommended to reduce torsional failure of nickel-titanium (NiTi) rotary instruments and to prevent root canal transportation. This study evaluated whether the repetitive insertions of G-files to the working length maintain the apical size as well as provide sufficient lumen as a glide path for subsequent instrumentation. Materials and MethodsThe G-file system (Micro-Mega) composed of G1 and G2 files for glide path preparation was used with the J-shaped, simulated resin canals. After inserting a G1 file twice, a G2 file was inserted to the working length 1, 4, 7, or 10 times for four each experimental group, respectively (n = 10). Then the canals were cleaned by copious irrigation, and lubricated with a separating gel medium. Canal replicas were made using silicone impression material, and the diameter of the replicas was measured at working length (D0) and 1 mm level (D1) under a scanning electron microscope. Data was analysed by one-way ANOVA and post-hoc tests (p = 0.05). ResultsThe diameter at D0 level did not show any significant difference between the 1, 2, 4, and 10 times of repetitive pecking insertions of G2 files at working length. However, 10 times of pecking motion with G2 file resulted in significantly larger canal diameter at D1 (p < 0.05). ConclusionsUnder the limitations of this study, the repetitive insertion of a G2 file up to 10 times at working length created an adequate lumen for subsequent apical shaping with other rotary files bigger than International Organization for Standardization (ISO) size 20, without apical transportation at D0 level.
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Mahima Bharat Mehta, Anupam Sharma, Aniket Jadhav, Aishwarya Handa, Abhijit Bajirao Jadhav, Ashwini A. Narayanan Journal of the International Clinical Dental Research Organization.2024; 16(2): 101. CrossRef - Effect of repetitive up-and-down movements on torque/force generation, surface defects and shaping ability of nickel-titanium rotary instruments: an ex vivo study
Moe Sandar Kyaw, Arata Ebihara, Yoshiko Iino, Myint Thu, Keiichiro Maki, Shunsuke Kimura, Pyae Hein Htun, Takashi Okiji BMC Oral Health.2024;[Epub] CrossRef - Influence of the Number of Pecking Motions at Working Length on the Shaping Ability of Single-file Systems in Long Oval-shaped Curved Canals
Lixiao Wang, Ruitian Lin, Hui Chen, Zihan Li, Franklin R. Tay, Lisha Gu Journal of Endodontics.2022; 48(4): 548. CrossRef - Influence of pecking frequency at working length on the volume of apically extruded debris: A micro-computed tomography analysis
Li-Xiao Wang, Hui Chen, Rui-Tian Lin, Li-Sha Gu Journal of Dental Sciences.2022; 17(3): 1274. CrossRef - Comparison of the effects from coronal pre‐flaring and glide‐path preparation on torque generation during root canal shaping procedure
Sang Won Kwak, Jung‐Hong Ha, Ya Shen, Markus Haapasalo, Hyeon‐Cheol Kim Australian Endodontic Journal.2022; 48(1): 131. CrossRef - Effective Establishment of Glide-Path to Reduce Torsional Stress during Nickel-Titanium Rotary Instrumentation
Ibrahim H. Abu-Tahun, Sang Won Kwak, Jung-Hong Ha, Asgeir Sigurdsson, Mehmet Baybora Kayahan, Hyeon-Cheol Kim Materials.2019; 12(3): 493. CrossRef - Stress Generation during Pecking Motion of Rotary Nickel-titanium Instruments with Different Pecking Depth
Jung-Hong Ha, Sang Won Kwak, Asgeir Sigurdsson, Seok Woo Chang, Sung Kyo Kim, Hyeon-Cheol Kim Journal of Endodontics.2017; 43(10): 1688. CrossRef - Debris extrusion by glide-path establishing endodontic instruments with different geometries
Jung-Hong Ha, Sung Kyo Kim, Sang Won Kwak, Rashid El Abed, Yong Chul Bae, Hyeon-Cheol Kim Journal of Dental Sciences.2016; 11(2): 136. CrossRef - Effects of Pitch Length and Heat Treatment on the Mechanical Properties of the Glide Path Preparation Instruments
Sang Won Kwak, Jung-Hong Ha, Chan-Joo Lee, Rashid El Abed, Ibrahim H. Abu-Tahun, Hyeon-Cheol Kim Journal of Endodontics.2016; 42(5): 788. CrossRef
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Buckling resistance, bending stiffness, and torsional resistance of various instruments for canal exploration and glide path preparation
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Sang-Won Kwak, Jung-Hong Ha, WooCheol Lee, Sung-Kyo Kim, Hyeon-Cheol Kim
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Restor Dent Endod 2014;39(4):270-275. Published online July 16, 2014
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DOI: https://doi.org/10.5395/rde.2014.39.4.270
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Abstract
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- Objectives
This study compared the mechanical properties of various instruments for canal exploration and glide-path preparations. Materials and MethodsThe buckling resistance, bending stiffness, ultimate torsional strength, and fracture angle under torsional load were compared for C+ file (CP, Dentsply Maillefer), M access K-file (MA, Dentsply Maillefer), Mani K-file (MN, Mani), and NiTiFlex K-file (NT, Dentsply Maillefer). The files of ISO size #15 and a shaft length of 25 mm were selected. For measuring buckling resistance (n = 10), the files were loaded in the axial direction of the shaft, and the maximum load was measured during the files' deflection. The files (n = 10) were fixed at 3-mm from the tip and then bent 45° with respect to their long axis, while the bending force was recorded by a load cell. For measuring the torsional properties, the files (n = 10) were also fixed at 3-mm, and clockwise rotations (2-rpm) were applied to the files in a straight state. The torsional load and the distortion angle were recorded until the files succumbed to the torque. ResultsThe CP was shown to require the highest load to buckle and bend the files, and the NT showed the least. While MA and MN showed similar buckling resistances, MN showed higher bending stiffness than MA. The NT had the lowest bending stiffness and ultimate torsional strength (p < 0.05). ConclusionsThe tested instruments showed different mechanical properties depending on the evaluated parameters. CP and NT files were revealed to be the stiffest and the most flexible instruments, respectively.
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Citations
Citations to this article as recorded by 
- Comparison of torsional, bending, and buckling resistances of different nickel-titanium glide path files
Feyyaz Çeliker, İrem Çetinkaya Matéria (Rio de Janeiro).2024;[Epub] CrossRef - Comparative Analysis of Endodontic 0.15 Stainless-Steel K-Files: Exploring Design, Composition, and Mechanical Performance
Abayomi Omokeji Baruwa, Filipa Chasqueira, Sofia Arantes-Oliveira, João Caramês, Duarte Marques, Jaime Portugal, Jorge N. R. Martins Dentistry Journal.2024; 12(2): 29. CrossRef - Comparative Analysis of Endodontic ISO Size 06, 08, and 10 Stainless Steel K-Files Used for Glide Path Procedures
Abayomi Omokeji Baruwa, Filipa Chasqueira, Sofia Arantes-Oliveira, João Caramês, Duarte Marques, Jaime Portugal, Jorge N. R. Martins Dentistry Journal.2024; 12(4): 98. CrossRef - Glide Path in Endodontics: A Literature Review of Current Knowledge
Vlad Mircea Lup, Giulia Malvicini, Carlo Gaeta, Simone Grandini, Gabriela Ciavoi Dentistry Journal.2024; 12(8): 257. CrossRef - Shaping Ability and Buckling Resistance of TruNatomy, WaveOne gold, and XP-Endo Shaper Single-File Systems
Neveen Ali Shaheen, Nahla Gamal Eldin Elhelbawy Contemporary Clinical Dentistry.2022; 13(3): 261. CrossRef - A comparison of different hand and rotary endodontic glide path files for buckling resistance
Ruchika Gupta, Pramod Mohite, Suvarna Patil, Nandita Bansal Endodontology.2021; 33(2): 102. CrossRef - Buckling Resistance of Various Nickel-Titanium Glide Path Preparation Instruments in Dynamic or Static Mode
Jung-Hong Ha, Sang Won Kwak, Antheunis Versluis, Hyeon-Cheol Kim Journal of Endodontics.2020; 46(8): 1125. CrossRef - Influence of heat treatment on color and flexibility of nickel-titanium endodontic instruments
Bernardo Corrêa de ALMEIDA, Carlos Nelson ELIAS RGO - Revista Gaúcha de Odontologia.2020;[Epub] CrossRef - Influence of Negotiation, Glide Path, and Preflaring Procedures on Root Canal Shaping—Terminology, Basic Concepts, and a Systematic Review
Gianluca Plotino, Venkateshbabu Nagendrababu, Frederic Bukiet, Nicola M. Grande, Sajesh K. Veettil, Gustavo De-Deus, Hany Mohamed Aly Ahmed Journal of Endodontics.2020; 46(6): 707. CrossRef - Mechanical Properties of Various Heat-treated Nickel-titanium Rotary Instruments
Hye-Jin Goo, Sang Won Kwak, Jung-Hong Ha, Eugenio Pedullà, Hyeon-Cheol Kim Journal of Endodontics.2017; 43(11): 1872. CrossRef - Debris extrusion by glide-path establishing endodontic instruments with different geometries
Jung-Hong Ha, Sung Kyo Kim, Sang Won Kwak, Rashid El Abed, Yong Chul Bae, Hyeon-Cheol Kim Journal of Dental Sciences.2016; 11(2): 136. CrossRef
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Endodontic treatment of maxillary lateral incisors with anatomical variations
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Moon-Hwan Lee, Jung-Hong Ha, Myoung-Uk Jin, Young-Kyung Kim, Sung-Kyo Kim
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Restor Dent Endod 2013;38(4):253-257. Published online November 12, 2013
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DOI: https://doi.org/10.5395/rde.2013.38.4.253
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Abstract
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Maxillary lateral incisors usually exhibit a single root with a single canal. However, maxillary lateral incisor teeth with unusual morphology of root canal system are frequently reported. These cases of variable root canal anatomy can be treated well by nonsurgical endodontic methods. A detailed description of root canal morphology is fundamental for successful endodontic treatment. Treatment using an operating microscope, radiographs from different angles, and cone-beam computerized tomography (CBCT) can produce more predictable endodontic outcomes.
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Citations
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- Endodnontic Management of a Maxillary Lateral Incisor with Two Roots
Pujan Kranti Kayastha, Merina Shakya, Laxman Poudel Journal of Interdisciplinary Dentistry.2022; 12(1): 32. CrossRef - Non-surgical management of dens invaginatus type IIIB in maxillary lateral incisor with three root canals and 6-year follow-up: A case report and review of literature
Suraj Arora, Gurdeep Singh Gill, Shahabe Abullais Saquib, Priyanka Saluja, Suheel M Baba, Shafait Ullah Khateeb, Anshad M Abdulla, Shashit Shetty Bavabeedu, Ahmed Babiker Mohamed Ali, Mohamed Fadul A Elagib World Journal of Clinical Cases.2022; 10(33): 12240. CrossRef - Endodontic management and follow-up of two rooted maxillary lateral incisor with open apex – A case report
R AnithaKumari, Sneha Jeetendra, Siddharth Rai, Sudhanva Eregowda IP Indian Journal of Conservative and Endodontics.2020; 5(4): 200. CrossRef - Geminated Maxillary Lateral Incisor with Two Root Canals
Nayara Romano, Luis Eduardo Souza-Flamini, Isabela Lima Mendonça, Ricardo Gariba Silva, Antonio Miranda Cruz-Filho Case Reports in Dentistry.2016; 2016: 1. CrossRef - Surgical management with intentional replantation on a tooth with palato-radicular groove
Jorge Forero-López, Luis Gamboa-Martínez, Laura Pico-Porras, Javier Laureano Niño-Barrera Restorative Dentistry & Endodontics.2015; 40(2): 166. CrossRef - Use of cone-beam computed tomography and three-dimensional modeling for assessment of anomalous pulp canal configuration: a case report
Alper Sinanoglu, Dilek Helvacioglu-Yigit, Ibrahim Mutlu Restorative Dentistry & Endodontics.2015; 40(2): 161. CrossRef - Endodontic management of a mandibular second molar with radix entomolaris: a case report
Rosaline Hannah, Deivanayagam Kandaswamy, Nachimuthu Jayaprakash Restorative Dentistry & Endodontics.2014; 39(2): 132. CrossRef
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Cyclic fatigue resistance tests of Nickel-Titanium rotary files using simulated canal and weight loading conditions
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Ok-In Cho, Antheunis Versluis, Gary SP Cheung, Jung-Hong Ha, Bock Hur, Hyeon-Cheol Kim
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Restor Dent Endod 2013;38(1):31-35. Published online February 26, 2013
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DOI: https://doi.org/10.5395/rde.2013.38.1.31
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Abstract
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- Objectives
This study compared the cyclic fatigue resistance of nickel-titanium (NiTi) files obtained in a conventional test using a simulated canal with a newly developed method that allows the application of constant fatigue load conditions. Materials and MethodsProFile and K3 files of #25/.06, #30/.06, and #40/.04 were selected. Two types of testing devices were built to test their fatigue performance. The first (conventional) device prescribed curvature inside a simulated canal (C-test), the second new device exerted a constant load (L-test) whilst allowing any resulting curvature. Ten new instruments of each size and brand were tested with each device. The files were rotated until fracture and the number of cycles to failure (NCF) was determined. The NCF were subjected to one-way ANOVA and Duncan's post-hoc test for each method. Spearman's rank correlation coefficient was computed to examine any association between methods. ResultsSpearman's rank correlation coefficient (ρ = -0.905) showed a significant negative correlation between methods. Groups with significant difference after the L-test divided into 4 clusters, whilst the C-test gave just 2 clusters. From the L-test, considering the negative correlation of NCF, K3 gave a significantly lower fatigue resistance than ProFile as in the C-test. K3 #30/.06 showed a lower fatigue resistance than K3 #25/.06, which was not found by the C-test. Variation in fatigue test methodology resulted in different cyclic fatigue resistance rankings for various NiTi files. ConclusionsThe new methodology standardized the load during fatigue testing, allowing determination fatigue behavior under constant load conditions.
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Citations
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- Effect of autoclave sterilization on the cyclic fatigue resistance of EdgeFile X7, 2Shape, and F-one nickel–titanium endodontic instruments
ArkanH Al-Amidi, HikmetAbdul-Rahim Al-Gharrawi Journal of Conservative Dentistry.2023; 26(1): 26. CrossRef - Investigation of cyclic fatigue of rotary endodontic instruments
Z. S. Khabadze, F. R. Ismailov Endodontics Today.2022; 20(1): 28. CrossRef - Torsional Resistance of Heat-Treated Nickel-Titanium Instruments under Different Temperature Conditions
Hyo Jin Jo, Sang Won Kwak, Hyeon-Cheol Kim, Sung Kyo Kim, Jung-Hong Ha Materials.2021; 14(18): 5295. CrossRef - Effect of surface treatment on the mechanical properties of nickel-titanium files with a similar cross-section
Sang Won Kwak, Joo Yeong Lee, Hye-Jin Goo, Hyeon-Cheol Kim Restorative Dentistry & Endodontics.2017; 42(3): 216. CrossRef - Effect from Rotational Speed on Torsional Resistance of the Nickel-titanium Instruments
Jung-Hong Ha, Sang Won Kwak, Sung Kyo Kim, Asgeir Sigurdsson, Hyeon-Cheol Kim Journal of Endodontics.2017; 43(3): 443. CrossRef - Mechanical Properties of Various Heat-treated Nickel-titanium Rotary Instruments
Hye-Jin Goo, Sang Won Kwak, Jung-Hong Ha, Eugenio Pedullà, Hyeon-Cheol Kim Journal of Endodontics.2017; 43(11): 1872. CrossRef - Cyclic Fatigue Resistance and Force Generated by OneShape Instruments during Curved Canal Preparation
Zhuyu Wang, Wen Zhang, Xiaolei Zhang, Luigi F. Rodella PLOS ONE.2016; 11(8): e0160815. CrossRef - Conditioning of root canal anatomy on static and dynamics of nickel-titanium rotary instruments
Italo Di Giuseppe, Davide Di Giuseppe, Vito Antonio Malagnino, Enrico Paolo Silla, Francesco Somma Giornale Italiano di Endodonzia.2015; 29(2): 58. CrossRef - Effect from surface treatment of nickel‐titanium rotary files on the fracture resistance
Bo Hoon Kim, Jung‐Hong Ha, Woo Cheol Lee, Sang‐Won Kwak, Hyeon‐Cheol Kim Scanning.2015; 37(1): 82. CrossRef - Effect of alloy type on the life‐time of torsion‐preloaded nickel‐titanium endodontic instruments
Jung‐Hong Ha, Sung Kyo Kim, Gary Shun‐Pan Cheung, Seong Hwa Jeong, Yong Chul Bae, Hyeon‐Cheol Kim Scanning.2015; 37(3): 172. CrossRef - ‘Screw‐in’ tendency of rotary nickel–titanium files due to design geometry
J. H. Ha, G. S. P. Cheung, A. Versluis, C. J. Lee, S. W. Kwak, H. C. Kim International Endodontic Journal.2015; 48(7): 666. CrossRef - Elastic Limits in Torsion of Reciprocating Nickel-Titanium Instruments
Jung-Hong Ha, Seo-Ryeong Kim, Antheunis Versluis, Gary Shun-Pan Cheung, Jin-Woon Kim, Hyeon-Cheol Kim Journal of Endodontics.2015; 41(5): 715. CrossRef - Buckling resistance, bending stiffness, and torsional resistance of various instruments for canal exploration and glide path preparation
Sang-Won Kwak, Jung-Hong Ha, WooCheol Lee, Sung-Kyo Kim, Hyeon-Cheol Kim Restorative Dentistry & Endodontics.2014; 39(4): 270. CrossRef - Safety of the Factory Preset Rotation Angle of Reciprocating Instruments
Jin-Woon Kim, Jung-Hong Ha, Gary Shun-Pan Cheung, Antheunis Versluis, Sang-Won Kwak, Hyeon-Cheol Kim Journal of Endodontics.2014; 40(10): 1671. CrossRef - Cyclic Fatigue Resistance of Rotary NiTi Instruments after Simulated Clinical Use in Curved Root Canals
Oscar Faciola Pessoa, Juliana Melo da Silva, Giulio Gavini Brazilian Dental Journal.2013; 24(2): 117. CrossRef - Methods and models to study nickel–titanium instruments
Ya Shen, Gary S.P. Cheung Endodontic Topics.2013; 29(1): 18. CrossRef - An overview of the mechanical properties of nickel–titanium endodontic instruments
Huimin Zhou, Bin Peng, Yu‐Feng Zheng Endodontic Topics.2013; 29(1): 42. CrossRef
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Influence of glide path on the screw-in effect and torque of nickel-titanium rotary files in simulated resin root canals
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Jung-Hong Ha, Sang-Shin Park
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Restor Dent Endod 2012;37(4):215-219. Published online November 21, 2012
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DOI: https://doi.org/10.5395/rde.2012.37.4.215
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Abstract
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- Objectives
The purpose of this study was to investigate the screw-in effect and torque generation depending on the size of glide path during root canal preparation. Materials and MethodsForty Endo-Training Blocks (REF A 0177, Dentsply Maillefer) were used. They were divided into 4 groups. For groups 1, 2, 3, and 4, the glide path was established with ISO #13 Path File (Dentsply Maillefer), #15 NiTi K-file NITIFLEX (Dentsply Maillefer), modified #16 Path File (equivalent to #18), and #20 NiTi K-file NITIFLEX, respectively. The screw-in force and resultant torque were measured using a custom-made experimental apparatus while canals were instrumented with ProTaper S1 (Dentsply Maillefer) at a constant speed of 300 rpm with an automated pecking motion. A statistical analysis was performed using one-way analysis of variance and the Duncan post hoc comparison test. ResultsGroup 4 showed lowest screw-in effect (2.796 ± 0.134) among the groups (p < 0.05). Torque was inversely proportional to the glide path of each group. In #20 glide path group, the screw-in effect and torque decreased at the last 1 mm from the apical terminus. However, in the other groups, the decrease of the screw-in effect and torque did not occur in the last 1 mm from the apical terminus. ConclusionsThe establishment of a larger glide path before NiTi rotary instrumentation appears to be appropriate for safely shaping the canal. It is recommended to establish #20 glide path with NiTi file when using ProTaper NiTi rotary instruments system safely.
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G. Uslu, T. Özyürek, K. Yılmaz, M. Gündoğar International Endodontic Journal.2018; 51(5): 584. CrossRef - A Comparison of the Cyclic Fatigue Resistance of Used and New Glide Path Files
Taha Özyürek, Gülşah Uslu, Uğur İnan Journal of Endodontics.2017; 43(3): 477. CrossRef - Comparison of apical extrusion of intracanal bacteria by various glide-path establishing systems: an in vitro study
Alberto Dagna, Rashid El Abed, Sameeha Hussain, Ibrahim H Abu-Tahun, Livia Visai, Federico Bertoglio, Floriana Bosco, Riccardo Beltrami, Claudio Poggio, Hyeon-Cheol Kim Restorative Dentistry & Endodontics.2017; 42(4): 316. CrossRef - Comparing the Centering Ability of Different Pathfinding Systems and Their Effect on Final Instrumentation by Hyflex CM
Lu Shi, Shova Wagle Journal of Endodontics.2017; 43(11): 1868. CrossRef - Torsional Performance of ProTaper Gold Rotary Instruments during Shaping of Small Root Canals after 2 Different Glide Path Preparations
Ana Arias, Rafaela Andrade de Vasconcelos, Alexis Hernández, Ove A. Peters Journal of Endodontics.2017; 43(3): 447. CrossRef - Dynamic Torque and Vertical Force Analysis during Nickel-titanium Rotary Root Canal Preparation with Different Modes of Reciprocal Rotation
Daisuke Tokita, Arata Ebihara, Miki Nishijo, Kana Miyara, Takashi Okiji Journal of Endodontics.2017; 43(10): 1706. CrossRef - Stress Generation during Pecking Motion of Rotary Nickel-titanium Instruments with Different Pecking Depth
Jung-Hong Ha, Sang Won Kwak, Asgeir Sigurdsson, Seok Woo Chang, Sung Kyo Kim, Hyeon-Cheol Kim Journal of Endodontics.2017; 43(10): 1688. CrossRef -
In vitro comparison of the cyclic fatigue resistance of HyFlex EDM, One G, and ProGlider nickel titanium glide path instruments in single and double curvature canals
Koray Yılmaz, Gülşah Uslu, Taha Özyürek Restorative Dentistry & Endodontics.2017; 42(4): 282. CrossRef - Debris extrusion by glide-path establishing endodontic instruments with different geometries
Jung-Hong Ha, Sung Kyo Kim, Sang Won Kwak, Rashid El Abed, Yong Chul Bae, Hyeon-Cheol Kim Journal of Dental Sciences.2016; 11(2): 136. CrossRef - Effects of Pitch Length and Heat Treatment on the Mechanical Properties of the Glide Path Preparation Instruments
Sang Won Kwak, Jung-Hong Ha, Chan-Joo Lee, Rashid El Abed, Ibrahim H. Abu-Tahun, Hyeon-Cheol Kim Journal of Endodontics.2016; 42(5): 788. CrossRef - Screw-in forces during instrumentation by various file systems
Jung-Hong Ha, Sang Won Kwak, Sung-Kyo Kim, Hyeon-Cheol Kim Restorative Dentistry & Endodontics.2016; 41(4): 304. CrossRef - Cyclic Fatigue Resistance and Force Generated by OneShape Instruments during Curved Canal Preparation
Zhuyu Wang, Wen Zhang, Xiaolei Zhang, Luigi F. Rodella PLOS ONE.2016; 11(8): e0160815. CrossRef - Differences in torsional performance of single- and multiple-instrument rotary systems for glide path preparation
Ana Arias, Rupinderpal Singh, Ove A. Peters Odontology.2016; 104(2): 192. CrossRef - Effect of glide path and apical preparation size on the incidence of apical crack during the canal preparation using Reciproc, WaveOne, and ProTaper Next systems in curved root canals: A stereomicroscope study
Hüseyin Sinan Topçuoğlu, Salih Düzgün, Firdevs Akpek, Gamze Topçuoğlu Scanning.2016; 38(6): 585. CrossRef - Geometric Optimization for Development of Glide Path Preparation Nickel-Titanium Rotary Instrument
Jung-Hong Ha, Chan-Joo Lee, Sang-Won Kwak, Rashid El Abed, Dongseok Ha, Hyeon-Cheol Kim Journal of Endodontics.2015; 41(6): 916. CrossRef - Glide Path Management with Single- and Multiple-instrument Rotary Systems in Curved Canals: A Micro–Computed Tomographic Study
Alison Luís Kirchhoff, Rene Chu, Isabel Mello, Andres Dario Plazas Garzon, Marcelo dos Santos, Rodrigo Sanches Cunha Journal of Endodontics.2015; 41(11): 1880. CrossRef - Safe root canal preparation using reciprocating nickel-titanium instruments
Jung-Hong Ha Restorative Dentistry & Endodontics.2015; 40(3): 253. CrossRef - Effect of repetitive pecking at working length for glide path preparation using G-file
Jung-Hong Ha, Hyo-Jin Jeon, Rashid El Abed, Seok-Woo Chang, Sung-Kyo Kim, Hyeon-Cheol Kim Restorative Dentistry & Endodontics.2015; 40(2): 123. CrossRef - Influence of a glide path on the dentinal crack formation of ProTaper Next system
Sevinç Aktemur Türker, Emel Uzunoğlu Restorative Dentistry & Endodontics.2015; 40(4): 286. CrossRef - ‘Screw‐in’ tendency of rotary nickel–titanium files due to design geometry
J. H. Ha, G. S. P. Cheung, A. Versluis, C. J. Lee, S. W. Kwak, H. C. Kim International Endodontic Journal.2015; 48(7): 666. CrossRef - Comparison of the Cyclic Fatigue Resistance of 5 Different Rotary Pathfinding Instruments Made of Conventional Nickel-Titanium Wire, M-wire, and Controlled Memory Wire
Ismail Davut Capar, Mehmet Emin Kaval, Hüseyin Ertas, Bilge Hakan Sen Journal of Endodontics.2015; 41(4): 535. CrossRef - Comparision of two different preparation protocol of Ni-Ti Rotary PathFile-ProTaper instruments in simulated s-shaped canals
Elıf Delve Başer Can, Müzeyyen Gerek, Mehmet Baybora Kayahan, Kambız Mohsenı, Hakki Sunay, Gündüz Bayirli Acta Odontologica Scandinavica.2014; 72(1): 76. CrossRef - Torsional and cyclic fatigue resistances of glide path preparation instruments: G‐file and PathFile
Sang Yup Sung, Jung‐Hong Ha, Sang‐Won Kwak, Rashid El Abed, Kyeongmin Byeon, Hyeon‐Cheol Kim Scanning.2014; 36(5): 500. CrossRef - Buckling resistance, bending stiffness, and torsional resistance of various instruments for canal exploration and glide path preparation
Sang-Won Kwak, Jung-Hong Ha, WooCheol Lee, Sung-Kyo Kim, Hyeon-Cheol Kim Restorative Dentistry & Endodontics.2014; 39(4): 270. CrossRef - Shaping Ability of Different Nickel-Titanium Systems in Simulated S-shaped Canals with and without Glide Path
Sebastian Bürklein, Thomas Poschmann, Edgar Schäfer Journal of Endodontics.2014; 40(8): 1231. CrossRef - Stress Generation during Self-Adjusting File Movement: Minimally Invasive Instrumentation
Hyeon-Cheol Kim, Sang Yup Sung, Jung-Hong Ha, Michael Solomonov, Jung-Min Lee, Chan-Joo Lee, Byung-Min Kim Journal of Endodontics.2013; 39(12): 1572. CrossRef
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Diastema closure using direct bonding restorations combined with orthodontic treatment: a case report
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Soon-Kong Hwang, Jung-Hong Ha, Myoung-Uk Jin, Sung-Kyo Kim, Young-Kyung Kim
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Restor Dent Endod 2012;37(3):165-169. Published online August 29, 2012
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DOI: https://doi.org/10.5395/rde.2012.37.3.165
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Abstract
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Closure of interdental spaces using proximal build-ups with resin composite is considered to be practical and conservative. However, a comprehensive approach combining two or more treatment modalities may be needed to improve esthetics. This case report describes the management of a patient with multiple diastemas, a peg-shaped lateral incisor and midline deviation in the maxillary anterior area. Direct resin bonding along with orthodontic movement of teeth allows space closure and midline correction, consequently, creating a better esthetic result.
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B Mueller, GB Rauber, LA Linhares, JK Bernardon, E Santini, LF Pottmaier Operative Dentistry.2023; 48(3): 237. CrossRef - Effectiveness, longevity, and color stability of in-office bleaching (6% H2O2 gel/Violet LED) and diastema closure with direct composite: 3-year follow-up
Ikejiri Larissa Luri Almeida Amorim, Álamo Larissa , Galli Mateus Zamora , Bombonatti Juliana Fraga Soares , de Amoêdo Campos Velo Marilia Mattar , Mondelli Rafael Francisco Lia Journal of Clinical Advances in Dentistry.2023; 7(1): 001. CrossRef - Ortodontik Tedavi Bitiminden Sonra Polidiastemanın Kompozit Rezin Ile Rehabilitasyonu: Olgu Sunumu
Rümeysa BATTAL, Hacer Deniz ARISU Selcuk Dental Journal.2022; 9(4): 127. CrossRef - Multidisciplinary Approach to Treatment of Midline Diastema With Edge-to-Edge Bite
Sumukh Nerurkar, Ranjit Kamble, Japneet Kaiser, Jeni Mathew Cureus.2022;[Epub] CrossRef - ÜST ANTERİOR DİŞLERDE BULUNAN ÇÜRÜKLERİN VE ESKİ RESTORASYONLARIN KOMPOZİT REZİNLER İLE ESTETİĞİNİN SAĞLANMASI: BİR VAKA SUNUMU
Abdulkadir HARMANKAYA, Hakan Yasin GÖNDER Selcuk Dental Journal.2022; 9(4): 86. CrossRef - ANTERİOR DİASTEMALARIN DİREKT KOMPOZİT REZİN RESTORASYONLARLA ESTETİK REHABİLİTASYONU: 5 OLGU SUNUMU
Handan YILDIRIM, Esra ÖZYURT Selcuk Dental Journal.2020; 7(2): 334. CrossRef - VAKUMLA ŞEKİLLENDİRİLEN ORTODONTİK PEKİŞTİRME APAREYLERİNİN KOMPOZİT RESTORASYONLARIN KLİNİK BAŞARISINA ETKİSİ
Serdar AKARSU, Sultan AKTUĞ KARADEMİR, Süleyman Kutalmış BÜYÜK Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi.2020; : 1. CrossRef - Aesthetic Smile Coming with Direct Composite Resin Laminate Restorations: Two Case Reports
Funda Demir, Elif Aybala Oktay, Numan Aydın, Fulya Toksoy Topçu, Ertürk Bilgeç Ankara Medical Journal.2018;[Epub] CrossRef - Effects of Different Demineralization‐Inhibiting Methods on the Shear Bond Strength of Glass‐Ceramics
Erhan Dilber, Mehmet Akın, Tevfik Yavuz, Ali Erdem Journal of Prosthodontics.2015; 24(5): 407. CrossRef - Correction of Mandibular Prognathism in Combination with Polydiastema Using Rectangular Body Ostectomy: Literature Review and Case Report
Metin Sencimen, Abdullah Tugrul Coskun, Gurkan Rasit Bayar, Handan Altug, Hasan Ayberk Altug, Tamer Zerener Case Reports in Clinical Medicine.2014; 03(11): 601. CrossRef - Predictable interproximal tissue removal with a surgical stent
Fausto Frizzera, Suzane Cristina Pigossi, Mateus Rodrigues Tonetto, William Kabbach, Elcio Marcantonio The Journal of Prosthetic Dentistry.2014; 112(4): 727. CrossRef
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Diagnostic challenges of nonodontogenic toothache
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Hyung-Ok Park, Jung-Hong Ha, Myoung-Uk Jin, Young-Kyung Kim, Sung-Kyo Kim
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Restor Dent Endod 2012;37(3):170-174. Published online August 29, 2012
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DOI: https://doi.org/10.5395/rde.2012.37.3.170
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Abstract
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The objective of this article was to present two nonodontogenic conditions that may mimic odontogenic toothache: trigeminal neuralgia and burning mouth syndrome. Two cases are presented in which one is related to the upper left second premolar and the other is related to the upper left first molar. Both showed pain when chewing. These two cases highlight the complexities involved in diagnosing nonodontogenic toothache. This article demonstrates the importance of having a thorough knowledge of both odontogenic and nonodontogenic toothache, as well as the need for careful evaluation of the nature of the pain and history, clinical and radiographic examinations.
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- Analysis of Final Diagnosis of Patients with Suspected Nonodontogenic Toothache: A Retrospective Study
Jeong Yeop Chun, Young Joo Shim Journal of Oral Medicine and Pain.2024; 49(3): 57. CrossRef - Interactions of Acetyl-11-Keto-Beta-Boswellic Acid on Catechol-O-Methyltransferase in the Management of Masticatory Myofascial Pain Syndrome
Ramya Suresh, Pradeep Kumar Yadalam, Ramya Ramadoss, Karthikeyan Ramalingam, Arvind Muthukrishnan Cureus.2024;[Epub] CrossRef - Assessment of Concordance between Chairside Ultrasonography and Digital Palpation in Detecting Myofascial Trigger Points in Masticatory Myofascial Pain Syndrome
Mohamed Elbarbary, Michael Goldberg, Howard C. Tenenbaum, David K. Lam, Bruce V. Freeman, David J. Pustaka, David Mock, Joseph Beyene, Amir Azarpazhooh Journal of Endodontics.2023; 49(2): 129. CrossRef - Masticatory Myofascial Pain Syndrome: Implications for Endodontists
Mohamed Elbarbary, Ariel Oren, Michael Goldberg, Bruce V. Freeman, David Mock, Howard C. Tenenbaum, Amir Azarpazhooh Journal of Endodontics.2022; 48(1): 55. CrossRef - PRICE 2020 guidelines for reporting case reports in Endodontics: explanation and elaboration
V. Nagendrababu, B. S. Chong, P. McCabe, P. K. Shah, E. Priya, J. Jayaraman, S. J. Pulikkotil, P. M. H. Dummer International Endodontic Journal.2020; 53(7): 922. CrossRef - Clinical Outline of Oral Diseases
Arvind Babu Rajendra Santosh, Doryck Boyd, Kumaraswamy Kikeri Laxminarayana Dental Clinics of North America.2020; 64(1): 1. CrossRef - Nonodontogenic Sources of Dental Pain
Scott E. Schames, Michael Jordan, Hila Robbins, Lenard Katz, Kaitlyn Tarbert Journal of the California Dental Association.2016; 44(8): 507. CrossRef - Nonodontogenic toothaches
Edward F. Wright The Journal of the American Dental Association.2015; 146(6): 406. CrossRef - Síndrome de boca ardiente: claves diagnósticas y terapéuticas
Eduardo Chimenos-Küstner, Cristina Arcos-Guerra, Maria Sueli Marques-Soares Medicina Clínica.2014; 142(8): 370. CrossRef
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Influence of root canal curvature on the screw-in effect of nickel-titanium rotary files in simulated resin root canal
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Ji-Young Son, Jung-Hong Ha, Young-Kyung Kim
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J Korean Acad Conserv Dent 2010;35(5):374-379. Published online September 30, 2010
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DOI: https://doi.org/10.5395/JKACD.2010.35.5.374
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Abstract
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Objectives
Nickel-titanium (Ni-Ti) rotary instruments have some unexpected disadvantages including the tendency to screw-in to the canal. The purpose of this study was to evaluate the influence of root canal curvatures on the screw-in effect of Ni-Ti rotary files.
Materials and Methods
A total of 80 simulated root canals in clear resin blocks were used in the study. Canals with curvature of 0, 10, 20 and 30 degrees were instrumented with ProTaper instruments SX, S1, S2 and a ProFile of #25/0.06 to 1.0-2.0 mm beyond the initial point of root curvature. The screw-in force was measured with a specially designed device while canal was instrumented with a ProFile of #30/0.06 at a constant speed of 300 rpm. The data were subjected to one-way ANOVA and Scheffe multiple range test for post-hoc test.
Results
Larger degree of canal curvature generated significantly lesser screw-in forces in all groups (p < 0.001).
Conclusions
More attention needs to be paid when using rotary instruments in canals with less curvature than canals with more curvatures to prevent or reduce any accidental overinstrumentation.
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Citations
Citations to this article as recorded by 
- Influence of different kinematics on stationary and dynamic torsional behavior of JIZAI nickel-titanium rotary instruments: An in vitro study
Myint Thu, Arata Ebihara, Moe Sandar Kyaw, Satoshi Omori, Keiichiro Maki, Shunsuke Kimura, Hayate Unno, Takashi Okiji Journal of Dental Sciences.2023; 18(3): 1170. CrossRef - Analysis of Torque and Force Induced by Rotary Nickel-Titanium Instruments during Root Canal Preparation: A Systematic Review
Myint Thu, Arata Ebihara, Sherif Adel, Takashi Okiji Applied Sciences.2021; 11(7): 3079. CrossRef - Mechanical and geometric features of endodontic instruments and its clinical effect
Hyeon-Cheol Kim Journal of Korean Academy of Conservative Dentistry.2011; 36(1): 1. CrossRef
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Influence of taper on the screw-in effect of nickel-titanium rotary files in simulated resin root canal
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Hye-Jin Sung, Jung-Hong Ha, Sung-Kyo Kim
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J Korean Acad Conserv Dent 2010;35(5):380-386. Published online September 30, 2010
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DOI: https://doi.org/10.5395/JKACD.2010.35.5.380
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Abstract
PDF PubReader ePub
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Objectives
The introduction of nickel-titanium alloy endodontic instruments has greatly simplified shaping the root canal systems. However, these new instruments have several unexpected disadvantages. One of these is tendency to screw into the canal. In this study, the influence of taper on the screw-in effect of the Ni-Ti rotary instrument were evaluated.
Materials and Methods
A total of 20 simulated root canals with an S-shaped curvature in clear resin blocks were divided into two groups. ProFile .02, .04, .06 (Dentsply-Maillefer) and GT rotary files .08, .10, .12 (Dentsply) were used in Profile group, and K3 .04, .06, .08, .10, and .12 (SybronEndo, Glendora) were used in K3 group. Files were used with a single pecking motion at a constant speed of 300 rpm. A special device was made to measure the force of screw-in effect. A dynamometer of the device recorded the screw-in force during simulated canal preparation and the recorded data was stored in computer with designed software. The data were subjected to one-way ANOVA and Tukey's multiple range test for post-hoc test. p value of less than 0.05 was regarded significant.
Results
The more tapered instruments generated more screw-in forces in Profile group (p < 0.05). In K3 group, 0.08, 0.10. and 0.12 tapered instruments showed more screw-in force than 0.04 tapered one, and 0.08 and 0.12 tapered instruments showed more screw-in force than 0.06 tapered one (p < 0.05).
Conclusions
The more tapered instruments seems to produce more screw-in force. To avoid this screw-in force during instrumentation, more attention may be needed when using more tapered instruments.
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Citations
Citations to this article as recorded by 
- Analysis of Torque and Force Induced by Rotary Nickel-Titanium Instruments during Root Canal Preparation: A Systematic Review
Myint Thu, Arata Ebihara, Sherif Adel, Takashi Okiji Applied Sciences.2021; 11(7): 3079. CrossRef - Comparative analysis of mechanical properties of differently tapered nickeltitanium endodontic rotary instruments
Yohei FUKUMORI, Miki NISHIJYO, Daisuke TOKITA, Kana MIYARA, Arata EBIHARA, Takashi OKIJI Dental Materials Journal.2018; 37(4): 667. CrossRef - Influence of glide path on the screw-in effect and torque of nickel-titanium rotary files in simulated resin root canals
Jung-Hong Ha, Sang-Shin Park Restorative Dentistry & Endodontics.2012; 37(4): 215. CrossRef - Mechanical and geometric features of endodontic instruments and its clinical effect
Hyeon-Cheol Kim Journal of Korean Academy of Conservative Dentistry.2011; 36(1): 1. CrossRef
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Comparison of screw-in effect for several nickel-titanium rotary instruments in simulated resin root canal
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Jung-Hong Ha, Myoung-Uk Jin, Young-Kyung Kim, Sung-Kyo Kim
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J Korean Acad Conserv Dent 2010;35(4):267-272. Published online July 31, 2010
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DOI: https://doi.org/10.5395/JKACD.2010.35.4.267
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Abstract
PDF PubReader ePub
Screw-in effect is one of the unintended phenomena that occurs during the root canal preparation with nickel-titanium rotary files. The aim of this study was to compare the screw-in effect among various nickel-titanium rotary file systems.
Six different nickel-titanium rotary instruments (ISO 20/.06 taper) were used: K3™ (SybronEndo, Glendora, CA, USA), Mtwo (VDW GmbH, München, Germany), NRT with safe-tip and with active tip (Mani Inc., Shioya-gun, Japan), ProFile® (Dentsply-Maillefer, Ballaigues, Switzerland) and ProTaper® (Dentsply-Maillefer, Ballaigues, Switzerland). For ProTaper®, S2 was selected because it has size 20. Root canal instrumentations were done in sixty simulated single-curved resin root canals with a rotational speed of 300 rpm and single pecking motion. A special device was designed to measure the force of screw-in effect. A dynamometer of the device recorded the screw-in force during simulated canal preparation and the recorded data was stored in a computer with designed software (LCV-USE-VS, Lorenz Messtechnik GmbH, Alfdorf, Germany). The data were subjected to one-way ANOVA and Tukey's multiple range test for post-hoc test. P value of less than 0.05 was regarded significant.
ProTaper® produced significantly more screw-in effects than any other instruments in the study (p < 0.001). K3™ produced significantly more screw-in effects than Mtwo, and ProFile® (p < 0.001). There was no significant difference among Mtwo, NRT, and ProFile® (p > 0.05), and between NRT with active tip and NRT with safe one neither (p > 0.05).
From the result of the present study, it was concluded, therefore, that there seems significant differences of screw-in effect among the tested nickel-titanium rotary instruments. The radial lands and rake angle of nickel-titanium rotary instrument might be the cause of the difference.
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Citations
Citations to this article as recorded by 
- Impact of Radial Lands on the Reduction of Torque/Force Generation of a Heat-Treated Nickel-Titanium Rotary Instrument
Taro Nakatsukasa, Arata Ebihara, Moe Sandar Kyaw, Satoshi Omori, Hayate Unno, Shunsuke Kimura, Keiichiro Maki, Takashi Okiji Applied Sciences.2022; 12(5): 2620. CrossRef - Comparative evaluation of mechanical properties and shaping performance of heat-treated nickel titanium rotary instruments used in the single-length technique
Taro NAKATSUKASA, Arata EBIHARA, Shunsuke KIMURA, Keiichiro MAKI, Miki NISHIJO, Daisuke TOKITA, Takashi OKIJI Dental Materials Journal.2021; 40(3): 743. CrossRef - Analysis of Torque and Force Induced by Rotary Nickel-Titanium Instruments during Root Canal Preparation: A Systematic Review
Myint Thu, Arata Ebihara, Sherif Adel, Takashi Okiji Applied Sciences.2021; 11(7): 3079. CrossRef - Influence of rotational speed on torque/force generation and shaping ability during root canal instrumentation of extracted teeth with continuous rotation and optimum torque reverse motion
M. S. Kyaw, A. Ebihara, Y. Kasuga, K. Maki, S. Kimura, P. H. Htun, T. Nakatsukasa, T. Okiji International Endodontic Journal.2021; 54(9): 1614. CrossRef - Influence of glide path on the screw-in effect and torque of nickel-titanium rotary files in simulated resin root canals
Jung-Hong Ha, Sang-Shin Park Restorative Dentistry & Endodontics.2012; 37(4): 215. CrossRef - Influence of root canal curvature on the screw-in effect of nickel-titanium rotary files in simulated resin root canal
Ji-Young Son, Jung-Hong Ha, Young-Kyung Kim Journal of Korean Academy of Conservative Dentistry.2010; 35(5): 374. CrossRef - Influence of taper on the screw-in effect of nickel-titanium rotary files in simulated resin root canal
Hye-Jin Sung, Jung-Hong Ha, Sung-Kyo Kim Journal of Korean Academy of Conservative Dentistry.2010; 35(5): 380. CrossRef
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