Restorative Dentistry & Endodontics

Research Articles

Effectiveness and safety of rotary and reciprocating kinematics for retreatment of curved root canals: a systematic review of in vitro studies: Lucas Pinho Simões, Alexandre Henrique dos Reis-Prado, Carlos Roberto Emerenciano Bueno, Ana Cecília Diniz Viana, Marco Antônio Húngaro Duarte, Luciano Tavares Angelo Cintra, Cleidiel Aparecido Araújo Lemos, Francine Benetti; Restor Dent Endod 2022;47(2):e22. Published online April 6, 2022; DOI: https://doi.org/10.5395/rde.2022.47.e22

Objectives

This systematic review (register-osf.io/wg7ba) compared the efficacy and safety of rotary and reciprocating kinematics in the removal of filling material from curved root canals.

Materials and Methods

Only in vitro studies evaluating both kinematics during retreatment were included. A systematic search (PubMed/MEDLINE, Scopus, and other databases, until January 2021), data extraction, and risk of bias analysis (Joanna Briggs Institute checklist) were performed. Efficacy in filling removal was the primary outcome.

Results

The search resulted in 2,795 studies, of which 15 were included. Efficacy was measured in terms of the remaining filling material and the time required for this. Nine studies evaluated filling material removal, of which 7 found no significant differences between rotary and reciprocating kinematics. Regarding the time for filling removal, 5 studies showed no difference between both kinematics, 2 studies showed faster results with rotary systems, and other 2 showed the opposite. No significant differences were found in apical transportation, centering ability, instrument failure, dentin removed and extruded debris. A low risk of bias was observed.

Conclusions

This review suggests that the choice of rotary or reciprocating kinematics does not influence the efficacy of filling removal from curved root canals. Further studies are needed to compare the kinematics safety in curved root canals.

Citations

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Fifteen years of engine‐driven nickel–titanium reciprocating instruments, what do we know so far? An umbrella review
Felipe Immich, Lucas Peixoto de Araújo, Rafaella Rodrigues da Gama, Wellington Luiz de Oliveira da Rosa, Evandro Piva, Giampiero Rossi‐Fedele
Australian Endodontic Journal.2024; 50(2): 409. CrossRef
Efficacy of Various Heat-treated Retreatment File Systems on the Apical Deformity and Canal Centering Ability in a Single-rooted Teeth using Nano CT
Swathi S, Pradeep Solete, Ganesh Jeevanandan, Delphine Priscilla Antony S, Kavalipurapu Venkata Teja, Dona Sanju
The Open Dentistry Journal.2024;[Epub] CrossRef
Micro-CT evaluation of the removal of root fillings using rotary and reciprocating systems supplemented by XP-Endo Finisher, the Self-Adjusting File, or Er,Cr:YSGG laser
Gülsen Kiraz, Bulem Üreyen Kaya, Mert Ocak, Muhammet Bora Uzuner, Hakan Hamdi Çelik
Restorative Dentistry & Endodontics.2023;[Epub] CrossRef
Influence of sodium hypochlorite on cyclic fatigue resistance of nickel–titanium instruments: A systematic review and meta-analysis of in vitro studies
Alexandre Henrique dos Reis-Prado, Lucas Guimarães Abreu, Lara Cancella de Arantes, Kiani dos Santos de Paula, Sabrina de Castro Oliveira, Juliana Goto, Ana Cecília Diniz Viana, Francine Benetti
Clinical Oral Investigations.2023; 27(11): 6291. CrossRef
Retreatment of XP-endo Shaper and R-Endo files in curved root canals
Hayam Y. Hassan, Fahd M. Hadhoud, Ayman Mandorah
BMC Oral Health.2023;[Epub] CrossRef
Advancing Endodontics through Kinematics
Shilpa Bhandi, Dario Di Nardo, Francesco Pagnoni, Rosemary Abbagnale
World Journal of Dentistry.2023; 14(6): 479. CrossRef

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Efficacy of reciprocating instruments and final irrigant activation protocols on retreatment of mesiobuccal roots of maxillary molars: a micro-CT analysis: Lilian Tietz, Renan Diego Furlan, Ricardo Abreu da Rosa, Marco Antonio Hungaro Duarte, Murilo Priori Alcalde, Rodrigo Ricci Vivan, Theodoro Weissheimer, Marcus Vinicius Reis Só; Restor Dent Endod 2022;47(1):e13. Published online February 15, 2022; DOI: https://doi.org/10.5395/rde.2022.47.e13

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Objectives

This study evaluated the efficacy of 3 reciprocating systems and the effects of 2 instruments for irrigant activation on filling material removal.

Materials and Methods

Forty mesiobuccal roots of maxillary molars were prepared up to size 25.06 and obturated. Micro-computed tomography (micro-CT) examination #1 was performed. Teeth were then divided into 4 groups (n = 10), according to the retreatment protocol: (1) manual, (2) Reciproc Blue, (3) WaveOne Gold, and (4) X1 Blue. Micro-CT examinations #2 and #3 were performed after filling removal and repreparation, respectively. Next, all teeth were divided into 2 new groups (n = 20) according to the irrigant activation protocol: XP Clean (XP Clean size 25.02) and Flatsonic (Flatsonic ultrasonic tip). Micro-CT examination #4 was performed after irrigant activation. Statistical analysis was performed with a significance level set at 5%.

Results

WaveOne Gold removed a significantly greater amount of filling material than the manual group (p < 0.05). The time to reach the WL was similar for all reciprocating systems (p > 0.05). X1 Blue was faster than the manual group (p < 0.05). Only manual group improved the filling material removal after the repreparation stage (p < 0.05). Both activation protocols significantly improved the filling material removal (p < 0.05), without differences between them (p > 0.05).

Conclusions

None of the tested instruments completely removed the filling material. X1 Blue size 25.06 reached the working length in the shortest time. XP Clean and Flatsonic improved the filling material removal.

Citations

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Supplementary methods for filling material removal: A systematic review and meta-analysis of micro-CT imaging studies
Bruna Venzke Fischer, Taynara Santos Goulart, Filipe Colombo Vitali, Diego Leonardo de Souza, Cleonice da Silveira Teixeira, Lucas da Fonseca Roberti Garcia
Journal of Dentistry.2024; 151: 105445. CrossRef
Evaluation of the Ability of 3 Reciprocating Instruments to Remove Obturation Material: A Micro–Computed Tomography Study
Fábio Luiz Cecagno, Alexandre Sigrist De Martin, Carlos Eduardo Fontana, Bruno Cavalini Cavenago, Wayne Martins Nascimento, Ana Grasiela da Silva Limoeiro, Carlos Eduardo da Silveira Bueno
Journal of Endodontics.2024; 50(3): 376. CrossRef
Comparative evaluation of cleaning efficiency of single file NiTi rotary system during root canal treatment procedure - A scanning electron microscope study
Ruchi Vashisht, Umesh Kumar, Swaty Jhamb, Ruchi Singla
Journal of Conservative Dentistry.2023; 26(3): 316. CrossRef
Influence of rotary and reciprocating kinematics on the accuracy of an integrated apex locator
Verônica de Almeida Gardelin, Júlia Itzel Acosta Moreno Vinholes, Renata Grazziotin‐Soares, Fernanda Geraldo Pappen, Fernando Branco Barletta
Australian Endodontic Journal.2023; 49(S1): 202. CrossRef

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Fracture incidence of Reciproc instruments during root canal retreatment performed by postgraduate students: a cross-sectional retrospective clinical study: Liliana Machado Ruivo, Marcos de Azevedo Rios, Alexandre Mascarenhas Villela, Alexandre Sigrist de Martin, Augusto Shoji Kato, Rina Andrea Pelegrine, Ana Flávia Almeida Barbosa, Emmanuel João Nogueira Leal Silva, Carlos Eduardo da Silveira Bueno; Restor Dent Endod 2021;46(4):e49. Published online September 9, 2021; DOI: https://doi.org/10.5395/rde.2021.46.e49

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Objectives

To evaluate the fracture incidence of Reciproc R25 instruments (VDW) used during non-surgical root canal retreatments performed by students in a postgraduate endodontic program.

Materials and Methods

From the analysis of clinical record cards and periapical radiographs of root canal retreatments performed by postgraduate students using the Reciproc R25, a total of 1,016 teeth (2,544 root canals) were selected. The instruments were discarded after a single use. The general incidence of instrument fractures and its frequency was analyzed considering the group of teeth and the root thirds where the fractures occurred. Statistical analysis was performed using the χ² test (p < 0.01).

Results

Seven instruments were separated during the procedures. The percentage of fracture in relation to the number of instrumented canals was 0.27% and 0.68% in relation to the number of instrumented teeth. Four fractures occurred in maxillary molars, 1 in a mandibular molar, 1 in a mandibular premolar and 1 in a maxillary incisor. A greater number of fractures was observed in molars when compared with the number of fractures observed in the other dental groups (p < 0.01). Considering all of the instrument fractures, 71.43% were located in the apical third and 28.57% in the middle third (p < 0.01). One instrument fragment was removed, one bypassed, while in 5 cases, the instrument fragment remained inside the root canal.

Conclusions

The use of Reciproc R25 instruments in root canal retreatments carried out by postgraduate students was associated with a low incidence of fractures.

Citations

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Reciprocating Torsional Fatigue and Mechanical Tests of Thermal-Treated Nickel Titanium Instruments
Victor Talarico Leal Vieira, Alejandro Jaime, Carlos Garcia Puente, Giuliana Soimu, Emmanuel João Nogueira Leal Silva, Carlos Nelson Elias, Gustavo de Deus
Journal of Endodontics.2025; 51(3): 359. CrossRef
Neodymium-Doped Yttrium Aluminum Perovskite (Nd:YAP) Laser in the Elimination of Endodontic Nickel-Titanium Files Fractured in Rooted Canals (Part 2: Teeth With Significant Root Curvature)
Amaury Namour, Marwan El Mobadder, Clément Cerfontaine, Patrick Matamba, Lucia Misoaga, Delphine Magnin , Praveen Arany, Samir Nammour
Cureus.2025;[Epub] CrossRef
Temperature-Dependent Effects on Cyclic Fatigue Resistance in Three Reciprocating Endodontic Systems: An In Vitro Study
Marcela Salamanca Ramos, José Aranguren, Giulia Malvicini, Cesar De Gregorio, Carmen Bonilla, Alejandro R. Perez
Materials.2025; 18(5): 952. CrossRef
Multimethod analysis of large‐ and low‐tapered single file reciprocating instruments: Design, metallurgy, mechanical performance, and irrigation flow
Emmanuel João Nogueira Leal Silva, Fernando Peña‐Bengoa, Natasha C. Ajuz, Victor T. L. Vieira, Jorge N. R. Martins, Duarte Marques, Ricardo Pinto, Mario Rito Pereira, Francisco Manuel Braz‐Fernandes, Marco A. Versiani
International Endodontic Journal.2024; 57(5): 601. CrossRef
Nd: YAP Laser in the Elimination of Endodontic Nickel-Titanium Files Fractured in Rooted Canals (Part 1: Teeth With Minimal Root Curvature)
Amaury Namour, Marwan El Mobadder, Patrick Matamba, Lucia Misoaga, Delphine Magnin , Praveen Arany, Samir Nammour
Cureus.2024;[Epub] CrossRef
Cyclic Fatigue of Different Reciprocating Endodontic Instruments Using Matching Artificial Root Canals at Body Temperature In Vitro
Sebastian Bürklein, Paul Maßmann, Edgar Schäfer, David Donnermeyer
Materials.2024; 17(4): 827. CrossRef
Endodontic Orthograde Retreatments: Challenges and Solutions
Alessio Zanza, Rodolfo Reda, Luca Testarelli
Clinical, Cosmetic and Investigational Dentistry.2023; Volume 15: 245. CrossRef
Design, metallurgy, mechanical properties, and shaping ability of 3 heat-treated reciprocating systems: a multimethod investigation
Emmanuel J. N. L. Silva, Jorge N. R. Martins, Natasha C. Ajuz, Henrique dos Santos Antunes, Victor Talarico Leal Vieira, Francisco Manuel Braz-Fernandes, Felipe Gonçalves Belladonna, Marco Aurélio Versiani
Clinical Oral Investigations.2023; 27(5): 2427. CrossRef
Noncontact 3D evaluation of surface topography of reciprocating instruments after retreatment procedures
Miriam Fatima Zaccaro-Scelza, Renato Lenoir Cardoso Henrique Martinez, Sandro Oliveira Tavares, Fabiano Palmeira Gonçalves, Marcelo Montagnana, Emmanuel João Nogueira Leal da Silva, Pantaleo Scelza
Brazilian Dental Journal.2022; 33(3): 38. CrossRef

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Screw-in forces during instrumentation by various file systems: Jung-Hong Ha, Sang Won Kwak, Sung-Kyo Kim, Hyeon-Cheol Kim; Restor Dent Endod 2016;41(4):304-309. Published online November 8, 2016; DOI: https://doi.org/10.5395/rde.2016.41.4.304

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Objectives

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 Methods

Forty 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%.

Results

Reciproc 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).

Conclusions

Geometrical 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.

Citations

Citations to this article as recorded by

Comparison of mechanical properties and shaping performance of ProGlider and ProTaper ultimate slider
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: Sang Won Kwak, Gary Shun-Pan Cheung, Jung-Hong Ha, Sung Kyo Kim, Hyojin Lee, Hyeon-Cheol Kim; Restor Dent Endod 2016;41(3):176-181. Published online June 23, 2016; DOI: https://doi.org/10.5395/rde.2016.41.3.176

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Objectives

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 Methods

Eighty-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).

Results

Among 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.

Conclusions

Novice operators preferred nickel-titanium instruments to stainless-steel, and majority of them opted for reciprocating file instead of continuous rotating system.

Citations

Citations to this article as recorded by

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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Influence of operator's experience level on lifespan of the WaveOne Primary file in extracted teeth: Abdulrahman Mohammed Saleh, Saeid Tavanafar, Pouyan Vakili-Gilani, Noor Jamal Al Sammerraie, Faahim Rashid; Restor Dent Endod 2013;38(4):222-226. Published online November 12, 2013; DOI: https://doi.org/10.5395/rde.2013.38.4.222

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Objectives

The aim of this study was to assess the influence of operator experience level on the lifespan of the WaveOne Primary file (Dentsply Maillefer, Ballaigues, Switzerland) in extracted teeth.

Materials and Methods

Moderately curved canals of extracted maxillary and mandibular molars were randomly distributed into 2 groups: experienced and inexperienced operators. Ten files were allocated to each group (n = 10). Each canal was prepared until the working length was reached, and the same file was used to prepare additional canals until it separated. The number of canals prepared before file separation was recorded. The fragment length of each file was measured, and the location of the fragment in the canal was determined. Data were statistically analysed using the independent 2-sample t-test.

Results

The 2 operators prepared a total of 324 moderately curved canals of maxillary and mandibular molars. There was no significant intergroup difference in the mean number of canals prepared (p = 0.27). The average lifespan of the WaveOne Primary file was 17.1 and 15.3 canals, and the longest lifespan was 25 and 20 canals, when used by experienced and inexperienced operators, respectively. There were no statistically significant intergroup differences in separated fragment length and location.

Conclusions

Within the limitations of this study, operator experience level appears to have no effect on the lifespan of the WaveOne Primary file in preparation of moderately curved canals. Single teeth with multiple canals can be prepared safely even by a novice operator by using a single file.

Citations

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Microstructural, microchemical, and mechanical changes associated with the clinical reuse of two nickel–titanium endodontic instruments
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A comparison of the shaping ability of reciprocating NiTi instruments in simulated curved canals: Young-Sil Yoo, Yong-Bum Cho; Restor Dent Endod 2012;37(4):220-227. Published online November 21, 2012; DOI: https://doi.org/10.5395/rde.2012.37.4.220

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Objectives

The study was to compare the shaping ability of Reciproc (VDW) and WaveOne (Dentsply Maillefer) instruments compared with ProTaper, Profile and hand instrument during the preparation of simulated root canals.

Materials and Methods

Five groups (n = 5) were established. Reciproc, WaveOne, ProTaper, Profile and K file (K-flexo file) were used to prepare the resin simulated canals. A series of preoperative and postoperative images were taken by a microscope and superimposed in 2 different layers. The amount of resin removed from both the inner and the outer sides of the canal was measured to the level of 10 mm from the apical tip, with a 1 mm increment.

Results

The mean of resin removal from the inner canal wall was not different from the outer canal wall for Reciproc and WaveOne groups at apical third (1 - 3 mm level). There was no difference in the change of working length and maintenance of canal curvature. NiTi instruments are superior to stainless-steel K file in their shaping ability.

Conclusions

Within the limitation of this present study, Reciproc and WaveOne instruments maintained the original canal curvature in curved canals better than ProTaper and Profile, which tend to transport towards the outer canal wall of the curve in the apical part of the canal.

Citations

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