Citations

Citations to this article as recorded by  

• 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  

• 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

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  

• 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

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