Citations

Citations to this article as recorded by  

• Comparative Analysis of Root Canal Curvature Measurement Methods for Permanent Mandibular Molars Distal Root: An Observational Study
  Tanu Singh, Saurav Bathla, Anuraag Gurtu, Shubhi Gupta, Sana Saifi, Madhusudan Astekar
  The Journal of Contemporary Dental Practice.2025; 26(10): 945.     CrossRef
• Do Continuous Rotating Endodontic Instruments Extrude Fewer Apical Debris Than Reciprocating Instruments in Non-Surgical Endodontic Retreatments? A Systematic Review
  Francesco Puleio, Francesco Giordano, Ugo Bellezza, David Rizzo, Valentina Coppini, Roberto Lo Giudice
  Applied Sciences.2024; 14(4): 1621.     CrossRef
• Intracanal removal and apical extrusion of filling material after retreatment using rotary or reciprocating instruments: A new approach using human cadavers
  Thamyres M. Monteiro, Victor O. Cortes‐Cid, Marilia F. V. Marceliano‐Alves, Andrea F. Campello, Luan F. Bastos, Ricardo T. Lopes, José F. Siqueira, Flávio R. F. Alves
  International Endodontic Journal.2024; 57(1): 100.     CrossRef
• Comparative analysis of methods for measuring root canal curvature based on periapical radiography: A laboratory study
  Rafael Chies Hartmann, Eduardo Silva Ferraz, Theodoro Weissheimer, Jose Antônio Poli de Figueiredo, Giampiero Rossi‐Fedele, Maximiliano Schünke Gomes
  International Endodontic Journal.2024; 57(12): 1848.     CrossRef
• Evaluation of apically extruded debris during root canal filling material removal in teeth with external apical root resorption: a comparison of different obturation techniques
  Büşra Melike Çağlar, İsmail Uzun
  BMC Oral Health.2024;[Epub]     CrossRef
• Evaluation of apically extruded debris using protaper universal, protaper next, one curve, Xp shaper, and edge file: An in vitro study
  Murtada Qadir Muhaibes, Shatha Abdulkareem Alwakeel
  Saudi Endodontic Journal.2024; 14(1): 31.     CrossRef
• A quantitative comparison of apically extruded debris during root canal preparation using NiTi full-sequence rotary and single-file rotary systems: An in vitro study
  Pallavi Goel, R. Vikram, R. Anithakumari, M. S. Adarsha, M. E. Sudhanva
  Endodontology.2024; 36(3): 235.     CrossRef
• In vitro evaluation of filling material removal and apical debris extrusion after retreatment using Reciproc blue, Hyflex EDM and ProTaper retreatment files
  Passent Abdelnaby, Mohamed Ibrahim, Rania ElBackly
  BMC Oral Health.2023;[Epub]     CrossRef
• A Comparative Study on the Shaping Ability and Cleaning Efficiency of Two Different Single-File Systems, Reciprocating Wave One Versus Continuous Rotation F360, Evaluated by Scanning Electron Microscope: An In Vitro Study
  Arunkumar Samudrala, Chandrakanth Majeti, Kommineni Harika Chowdary, Lakshmi Bhavani Potru, Anusha Yaragani, Yata Prashanth Kumar, Gagandeep K Sidhu, Navneet S Kathuria
  Cureus.2023;[Epub]     CrossRef
• COMPARATIVE EVALUATION OF THE EFFECT OF DIFFERENT ROTARY INSTRUMENT SYSTEMS ON THE AMOUNT OF APICALLY EXTRUDED DEBRIS
  Recai ZAN, Bilge LENGER
  Cumhuriyet Dental Journal.2022; 25(2): 172.     CrossRef
• A critical analysis of research methods and experimental models to study apical extrusion of debris and irrigants
  Jale Tanalp
  International Endodontic Journal.2022; 55(S1): 153.     CrossRef
• Critical analysis of research methods and experimental models to study removal of root filling materials
  Mahdi A. Ajina, Pratik K. Shah, Bun San Chong
  International Endodontic Journal.2022; 55(S1): 119.     CrossRef

Citations

Citations to this article as recorded by  

• The effect of canal curvature on cyclic fatigue resistance of rotary instruments using different irrigation materials (in vitro study)
  Mohammed Hamoudi Alsunboli, Sally Saad Ali Ihsan, Duha Qais Sabah
  F1000Research.2024; 12: 449.     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
• Static and Dynamic Cyclic Fatigue Resistance of Nickel-Titanium Rotary Instruments in a Double-Curved Stainless Steel Artificial Canal
  Hoang-Lan-Anh Le, Thuan-Loc Tran, Thu-Thuy Nguyen, Tran-Lan-Khue Pham, Van-Khoa Pham
  Applied Sciences.2023; 13(4): 2687.     CrossRef
• The effect of canal curvature on cyclic fatigue resistance of rotary instruments using different irrigation materials (in vitro study)
  Mohammed Hamoudi Alsunboli, Sally Saad Ali Ihsan, Duha Qais Sabah
  F1000Research.2023; 12: 449.     CrossRef
• Comparative analysis of torsional and cyclic fatigue resistance of ProGlider, WaveOne Gold Glider, and TruNatomy Glider in simulated curved canal
  Pedro de Souza Dias, Augusto Shoji Kato, Carlos Eduardo da Silveira Bueno, Rodrigo Ricci Vivan, Marco Antonio Hungaro Duarte, Pedro Henrique Souza Calefi, Rina Andréa Pelegrine
  Restorative Dentistry & Endodontics.2023;[Epub]     CrossRef
• Investigation of the efficacy of different Ni-Ti systems on acrylic blocks for correcting ledge formation
  Osman Ünlü, Hüseyin Gürkan Güneç, Faruk Haznedaroğlu
  BMC Oral Health.2023;[Epub]     CrossRef
• Comparison of postoperative pain in single visit endodontics using heat-treated nickel − titanium file systems – A randomized clinical trial
  Priyanka Unnikrishnan, Lalitagauri Mandke, Leena Padhye
  Endodontology.2023; 35(2): 94.     CrossRef
• Cyclic Fatigue Resistance of Glide Path Rotary Files: A Systematic Review of in Vitro Studies
  Israa Ashkar, José Luis Sanz, Leopoldo Forner
  Materials.2022; 15(19): 6662.     CrossRef
• Endodontic Management of Dilacerated Maxillary First Molar with Tactile Controlled Activation Technique – A Case Report
  Vijay Yadav, Rega Kumar, Ruchika Roongta Nawal, Sangeeta Talwar
  Journal of Pierre Fauchard Academy (India Section).2022; : 67.     CrossRef
• Combination of a new ultrasonic tip with rotary systems for the preparation of flattened root canals
  Karina Ines Medina Carita Tavares, Jáder Camilo Pinto, Airton Oliveira Santos-Junior, Fernanda Ferrari Esteves Torres, Juliane Maria Guerreiro-Tanomaru, Mario Tanomaru-Filho
  Restorative Dentistry & Endodontics.2021;[Epub]     CrossRef
• Cyclic Fatigue of TruNatomy Nickel-Titanium Rotary Instrument in Single and Double Curvature Canals: A Comparative Study
  Sarah A Rashid, Hikmet A AI-Gharrawi
  World Journal of Dentistry.2021; 12(1): 28.     CrossRef
• Micro-computed tomographic evaluation of a new system for root canal filling using calcium silicate-based root canal sealers
  Mario Tanomaru-Filho, Fernanda Ferrari Esteves Torres, Jader Camilo Pinto, Airton Oliveira Santos-Junior, Karina Ines Medina Carita Tavares, Juliane Maria Guerreiro-Tanomaru
  Restorative Dentistry & Endodontics.2020;[Epub]     CrossRef
• Comparison of torque, force generation and canal shaping ability between manual and nickel-titanium glide path instruments in rotary and optimum glide path motion
  Pyae Hein Htun, Arata Ebihara, Keiichiro Maki, Shunsuke Kimura, Miki Nishijo, Daisuke Tokita, Takashi Okiji
  Odontology.2020; 108(2): 188.     CrossRef
• Torsional fatigue strength of reciprocating and rotary pathfinding instruments manufactured from different NiTi alloys
  Rodrigo Ricci VIVAN, Murilo Priori ALCALDE, George CANDEIRO, Giulio GAVINI, Celso Luis CALDEIRA, Marco Antonio Hungaro DUARTE
  Brazilian Oral Research.2019;[Epub]     CrossRef
• Comparison of postoperative pain intensity after using reciprocating and continuous rotary glide path systems: a randomized clinical trial
  Mehmet Adıgüzel, Koray Yılmaz, Pelin Tüfenkçi
  Restorative Dentistry & Endodontics.2019;[Epub]     CrossRef
• Cyclic fatigue resistance of the WaveOne Gold Glider, ProGlider, and the One G glide path instruments in double-curvature canals
  Damla Kırıcı, Alper Kuştarcı
  Restorative Dentistry & Endodontics.2019;[Epub]     CrossRef
• Intraoperative Pain During Glide Path Creation with the Use of a Rotary or Reciprocating System
  Pelin TUFENKCİ, Mehmet ADIGUZEL, Koray YILMAZ
  Cumhuriyet Dental Journal.2019; 22(1): 66.     CrossRef

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

The aim of this study was to compare the effects of anticurvature filing with stainless steel k-file versus nickel-titanium ProFile in the shaping of mesial root canals of extracted mandibular molars.

A total of 60 canals from 30 mesial roots of mandibular molar teeth were randomly assigned to three groups with n=20 each. They were prepared with different instruments and methods: The first group with stainless steel k-file and circumferential filing, the second with precurved stainless steel k-file and anticurvature filing and the third with ProFile (.06 taper) and anticurvature filing. Using a micro-computed tomography system (skyscan-1076, SKYSCAN, Antwerpen, Belgium), pre-and post-operative specimens were scanned. Subsequently, canal images were superimposed and changes in root dentin thickness were measured at distal side (danger zone) of the canal. The data was analyzed using a one-way ANOVA and the comparison of means was conducted using a post hoc multiple comparison Tukey test.

There were significant differences in the change of root dentin thickness at the 7.5~8.5mm level between group 1 and 2, 3.5~6mm level between group 1 and 3 and 3.5~6mm level between group 2 and 3(n=20, P<0.05).

To evaluate the change of working length with various instrumentation techniques in curved canals, working length and canal curvature were determined before and after canal instrumentation in buccal or mesial canals of extracted human molars. Stainless steel K-files (MANI®, Matsutani Seisakusho Co. Takanezawa, Japan), nickel-titanium K-files (Naviflex NT™, Brassler, Savannah, USA), ProFile®, and ProTaper™ (Dentsply-Maillefer, Ballaigues, Switzerland) were used to prepare the canals with crown-down technique. In two hand instrumentation groups, coronal flaring was made with Gates Glidden burs. Apical canals were instrumented until apical diameter had attained a size of 30. Positional relation between the tooth apex and the #10 K-file tip was examined by using AutoCAD 2000 (Autodesk Corp., San Rafael. CA, USA) under a stereomicroscope before and after coronal flaring, and after apical instrumentation. Degree of canal curvature was also measured with Schneider's method in radiographs. Data of working length and canal curvature changes were statistically analyzed with one-way ANOVA and Tukey's studentized range test.

Working length and canal curvature were decreased significantly in each step in all instrumentation groups. Coronal flaring using Gates Glidden burs in hand instrument groups and whole canal instrumentation using stainless steel hand K-files caused significantly more working length change than in ProFile instrumentation group (p < 0.05).

The result of this study demonstrates that all of the above kinds of instrumentation in curved canals cause reduction of working length and canal curvature at each instrumentation steps, and hand instrumentation causes more working length change than ProFile.

Citations

Citations to this article as recorded by  

• Evaluation of the Accuracy of an Endomotor-Integrated Apex Locator Versus a Standalone Electronic Apex Locator in Teeth with Simulated Apical Root Resorption: An In Vitro Study
  Yunus Emre Çakmak, Damla Erkal, Hatice Harorlı, Simay Koç
  European Journal of Therapeutics.2025; 31(3): 173.     CrossRef
• Does Root Canal Shaping Effect the Accuracy of Electronic Apex Locators in Curved and Straight Root Canals?
  Dide Tekinarslan, Damla Erkal, Esen Ercan, Simay Koc, Kürşat Er
  Clinical and Experimental Health Sciences.2024; 14(3): 727.     CrossRef
• Comparative Study of Four Endodontic File Systems to Assess Changes in Working Length during Root Canal Instrumentation and the Effect of Canal Curvature on Working Length Change
  Michelle Tien, Hermawan Tjoa, Maggie Zhou, Paul V. Abbott
  Journal of Endodontics.2020; 46(1): 110.     CrossRef
• Study of endodontic working length of Korean posterior teeth
  Jeong-Yeob Kim, Sang-Hoon Lee, Gwang-Hee Lee, Sang-Hyuk Park
  Journal of Korean Academy of Conservative Dentistry.2010; 35(6): 429.     CrossRef

This study investigated the effect of anticurvature filing method on preparation of the curved root canal using ProFile.

Thirty six resin blocks were divided equally into three groups by instrumentation motions: anticurvature filing motion, circumferential filing motion and straight up-and-down motion. Each resin block was sectioned at 8 mm level from the apex and at the greatest curvature of the canal and reassembled in metal mold by a modified Bramante technique. All groups were instrumented with the ProFile system. At each levels, image of sectioned surface were taken using CCD camera under a stereomicroscope at ×40 magnification and stored. Distances of transportation at the inner and outer area of curvature and the centering ratio were determined and compared by statistical analysis, along with the assessment of the increase of root canal cross-sectional area.

The results were as follows;

1. In all groups, there was no statistical difference in the mean increase of root canal cross-sectional area, the centering ratio, and the mean distances of transportation at the inner area of curvature at each level.

2. At 8 mm level from the apex, the mean distances of transportation at the outer area of curvature decreases in following order anticurvature filing motion, circumferential filing motion, straight up-and-down motion but, no significant difference at the greatest curvature of the canal among three groups.

Effect of anticurvature filing motion using ProFile does not seem to be different from other instrumentation motions at the inner area of curvature in curved root canal.

The purpose of this study was to evaluate which type of Ni-Ti files are able to maintain canal configuration better in the simulated canal with abrupt curvature near it's apex.

Ninety six simulated root canals were made in epoxy resin and #15 finger spreader was used as root canal templates. The simulated root canals were made with radius of curvature of 1.5 mm, 3.0 mm, 4.0 mm, 6.0 mm respectively and the angle of curvature of all simulated canals were adjusted to 90 degree. The simulated canals were instrumented by ProFile, ProTaper, Hero 642, and K³ at a 300 rpm using crown-down pressureless technique. Pre-instrumented and post-instrumented images were taken by digital camera and were superimposed with Adobe Photoshop 6.0 program. Images were compared by image analysis program.

The changes of canal width at the inner and outer side of the canal curvature, canal transportation were measured at 9 measuring point with 1 mm interval. Statistical analysis among the types of Ni-Ti files was performed using Kruskal-Wallis test and Mann-Whitney U-test.

The result was that ProFile maintain original canal configuration better than other engine driven Ni-Ti files in the canals above 3.0 mm radius of curvature, and in the 1.5 mm radius of curvature, most of Ni-Ti flies were deformed or separated during instrumentation.

Citations

Citations to this article as recorded by  

• A study on transportation of apical foramen after overinstrumentation by ProFile®, ProTaper™ and K3TMin simulated canals with different curvatures
  Hyun Yang, In-Seok Yang, Yun-Chann Hwang, In-Nam Hwang, Suk-Ja Yoon, Won-Jae Kim, Won-Mann Oh
  Journal of Korean Academy of Conservative Dentistry.2007; 32(2): 87.     CrossRef

The purpose of this study was to evaluate the canal configuration after shaping by ProFile, ProTaper and K-Flexofile in simulated resin canals with different angles of curvature.

Three types of instruments were used : ProFile, ProTaper, K-Flexofile. Simulated root canals, which were made of epoxy resin, were prepared by ProFile, ProTaper with rotary instrument using a crown-down pressureless technique, and hand instrumentation was performed by K-Flexofile using a step-back technique. All simulated canals were prepared up to size 25 file at end-point of preparation. Pre and post instrumentation images were recorded with Scanner. Assessment of canal shape was completed with Image Analysis program. Measurements were made at 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 mm from the apex. At each level, outer canal width, inner canal width, total canal width, and amount of transportation from original axis were recorded. Instrument deformation and fracture were recorded. Data were analyzed by means of one-way ANOVA analysis of variance and the Sheffe's test.

The result was that ProFile and ProTaper maintain original canal shape regardless of the increase of angle of curvature than K-Flexofile. ProFile show significantly less canal transportation and maintained original canal shape better than ProTaper.

Citations

Citations to this article as recorded by  

• A study on transportation of apical foramen after overinstrumentation by ProFile®, ProTaper™ and K3TMin simulated canals with different curvatures
  Hyun Yang, In-Seok Yang, Yun-Chann Hwang, In-Nam Hwang, Suk-Ja Yoon, Won-Jae Kim, Won-Mann Oh
  Journal of Korean Academy of Conservative Dentistry.2007; 32(2): 87.     CrossRef

The aim of this study was to evaluate the shaping abilities of four different rotary nickel-titanium instruments with anticurvature motion to prepare root canal at danger zone by measuring the change of dentin thickness in order to have techniques of safe preparation of canals with nickel-titanium files.

Mesiobuccal and mesiolingual canals of forty mesial roots of extracted human lower molars were instrumented using the crown-down technique with ProFile, GT™ Rotary file, Quantec file and ProTaper™. In each root, one canal was prepared with a straight up-and-down motion and the other canal was with an anticurvature motion. Canals were instrumented until apical foramens were up to size of 30 by one operator. The muffle system was used to evaluate the root canal preparation. After superimposing the pre- and post-instrumentation canal, change in root dentin thickness was measured at the inner and outer sides of the canal at 1, 3, and 5 mm levels from the furcation. Data were analyzed using two-way ANOVA.

Root dentin thickness at danger zone was significantly thinner than that at safe zone at all levels (p < 0.05).

There was no significant difference in the change of root dentin thickness between the straight up-and-down and the anticurvature motions at both danger and safe zones in all groups (p > 0.05).

ProTaper removed significantly more dentin than other files especially at furcal 3 mm level of danger and safe zones (p < 0.05)

Therefore, it was concluded that anticurvature motion with nickel-titanium rotary instruments does not seem to be effective in danger zone of lower molars.

Citations

Citations to this article as recorded by  

• Conservation of dentin thickness in the root canals orifice following two preparation techniques
  Ranjdar Talabani, Shawbo Ahmad, Arass Noori
  Sulaimani Dental Journal.2014; 1(2): 6.     CrossRef
• Change of working length in curved canals by various instrumentation techniques
  Jeong-Im Jo, Myoung-Uk Jin, Young Kyung Kim, Sung Kyo Kim
  Journal of Korean Academy of Conservative Dentistry.2006; 31(1): 30.     CrossRef
• Effect of anticurvature filing method on preparation of the curved root canal using ProFile
  Hyun-Ji Song, Juhea Chang, Kyung-Mo Cho, Jin-Woo Kim
  Journal of Korean Academy of Conservative Dentistry.2005; 30(4): 327.     CrossRef

There are increasing usage of Nickel-Titanium rotary files in modern clinical endodontic treatment because it is effective and faster than hand filing due to reduced step.

This study was conducted to evaluate the effect of canal preparations using 3 different rotary Nickel-Titanium files that has different cross sectional shape and taper on the maintenance of canal curvature. Simulated resin block were instrumented with Profile(Dentsply, USA), GT rotary files(Dentsply, USA), Hero 642(Micro-Mega, France), and Pro-Taper(Dentsply, USA).

The image of Pre-instrumentation and Post-instrumentation were acquired using digital camera and overspreaded in the computer. Then the total differences of canal diameter, deviation at the outer portion of curvature, deviation at the inner portion of curvature, movement of center of the canal and the centering ratio at the pre-determined level from the apex were measured.

Results were statistically analyzed by means of ANOVA, followed by Scheffe test at a significance level of 0.05.

The results were as follows;

1. Deviation at the outer portion of curvature, deviation at the inner portion of curvature were showed largest in Pro-Taper, so also did in the total differences of canal diameter(p<0.05).

2. All the groups showed movements of center. Profile combined with GT rotary files and Hero 642 has no difference but Pro-Taper showed the most deviation(p<0.05).

3. At the 1, 2, 3mm level from the apex movements of center directed toward the outer portion of curvature, but in 4, 5 mm level directed toward the inner portion of curvature(p<0.05).

As a results of this study, it could be concluded that combined use of other Nickel-Titanium rotary files is strongly recommended when use Pro-Taper file because it could be remove too much canal structure and also made more deviation of canal curvature than others.

Citations

Citations to this article as recorded by  

• Stress distribution of three NiTi rotary files under bending and torsional conditions using a mathematic analysis
  T. O. Kim, G. S. P. Cheung, J. M. Lee, B. M. Kim, B. Hur, H. C. Kim
  International Endodontic Journal.2009; 42(1): 14.     CrossRef
• Comparison of shaping ability using various Nickel-Titanium rotary files and hybrid technique
  Jung-Won Kim, Jeong-Kil Park, Bock Hur, Hyeon-Cheol Kim
  Journal of Korean Academy of Conservative Dentistry.2007; 32(6): 530.     CrossRef
• A study of insertion depth of buchanan plugger after shaping using NI-TI rotary files in simulated resin root canals
  Youn-Sik Park, Dong-Jun Kim, Yun-Chan Hwang, In-Nam Hwang, Won-Mann Oh
  Journal of Korean Academy of Conservative Dentistry.2006; 31(2): 125.     CrossRef
• Step by step analysis of root canal instrumentation with ProTaper®
  Mi-Hee Kim, Bock Huh, Hyeon-Cheol Kim, Jeong-Kil Park
  Journal of Korean Academy of Conservative Dentistry.2006; 31(1): 50.     CrossRef
• Effect of anticurvature filing method on preparation of the curved root canal using ProFile
  Hyun-Ji Song, Juhea Chang, Kyung-Mo Cho, Jin-Woo Kim
  Journal of Korean Academy of Conservative Dentistry.2005; 30(4): 327.     CrossRef
• A comparison of shaping ability of the three ProTaper® instrumentation techniques in simulated canals
  So-Youn Kim, Jeong-Kil Park, Bock Hur, Hyeon-Cheol Kim
  Journal of Korean Academy of Conservative Dentistry.2005; 30(1): 58.     CrossRef