Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
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Comparison of vibration characteristics of file systems for root canal shaping according to file length

  • Seong-Jun Park (Department of Conservative Dentistry, Gangneung-Wonju National University) ;
  • Se-Hee Park (Department of Conservative Dentistry, Gangneung-Wonju National University) ;
  • Kyung-Mo Cho (Department of Conservative Dentistry, Gangneung-Wonju National University) ;
  • Hyo-Jin Ji (Department of Conservative Dentistry, Gangneung-Wonju National University) ;
  • Eun-Hye Lee (Department of Conservative Dentistry, Hanyang University Seoul Hospital) ;
  • Jin-Woo Kim (Department of Conservative Dentistry, Gangneung-Wonju National University)
  • Received : 2020.06.24
  • Accepted : 2020.08.04
  • Published : 2020.11.30
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Abstract

Objectives: No studies have yet assessed vibration characteristics according to endodontic file length. Accordingly, the objective of the present study was to examine the vibration characteristics according to nickel-titanium file length and to compare these characteristics between different file systems. Materials and Methods: A total of 45 root canal models were divided into 3 experimental groups (n = 15 each) based on the file system used (ProTaper Gold [PTG], ProTaper Next, or WaveOne Gold [WOG]). Each experimental group was further divided into 3 subgroups according to file length (21, 25, or 31 mm). An electric motor (X-SMART PLUS) was used in the experiment. For each file system, vibrations generated when using a size 25 file were measured and used to calculate the average vibration acceleration. The differences in vibrations were analyzed using 1-way analysis of variance and the Scheffé post hoc test with a confidence interval of 95%. Results: In the PTG file system, significantly lower vibration acceleration was observed when using a 21-mm file than when using a 31-mm file. In the WOG file system, significantly stronger vibration acceleration was observed when using a 31-mm file than when using 21- or 25-mm files. Regardless of the file length, the WOG group exhibited significantly stronger vibration acceleration than the other 2 experimental groups. Conclusions: In clinical practice, choosing a file with the shortest length possible could help reduce vibrations. Additionally, consideration should be given to vibrations that could be generated when using WOG files with reciprocating motion.

Keywords

Acknowledgement

The authors thanks Prof. Deok-Ki Choi for his profound knowledge regarding the experimental design and data analysis.

References

  1. Grande NM, Ahmed HM, Cohen S, Bukiet F, Plotino G. Current assessment of reciprocation in endodontic preparation: a comprehensive review-part I: historic perspectives and current applications. J Endod 2015;41:1778-1783.
  2. Shen Y, Zhou HM, Zheng YF, Peng B, Haapasalo M. Current challenges and concepts of the thermomechanical treatment of nickel-titanium instruments. J Endod 2013;39:163-172.
  3. Plotino G, Ahmed HM, Grande NM, Cohen S, Bukiet F. Current assessment of reciprocation in endodontic preparation: a comprehensive review--part II: properties and effectiveness. J Endod 2015;41:1939-1950.
  4. Topcuoglu HS, Topcuoglu G. Cyclic fatigue resistance of Reciproc Blue and Reciproc files in an S-shaped canal. J Endod 2017;43:1679-1682.
  5. Ozyurek T. Cyclic fatigue resistance of Reciproc, WaveOne, and WaveOne Gold nickel-titanium instruments. J Endod 2016;42:1536-1539.
  6. Uygun AD, Kol E, Topcu MK, Seckin F, Ersoy I, Tanriver M. Variations in cyclic fatigue resistance among ProTaper Gold, ProTaper Next and ProTaper Universal instruments at different levels. Int Endod J 2016;49:494-499.
  7. Silva EJ, Muniz BL, Pires F, Belladonna FG, Neves AA, Souza EM, De-Deus G. Comparison of canal transportation in simulated curved canals prepared with ProTaper Universal and ProTaper Gold systems. Restor Dent Endod 2016;41:1-5.
  8. Vadhana S, SaravanaKarthikeyan B, Nandini S, Velmurugan N. Cyclic fatigue resistance of RaCe and Mtwo rotary files in continuous rotation and reciprocating motion. J Endod 2014;40:995-999.
  9. Ahn SY, Kim HC, Kim E. Kinematic effects of nickel-titanium instruments with reciprocating or continuous rotation motion: a systematic review of in vitro studies. J Endod 2016;42:1009-1017.
  10. Jeon YJ, Kim JW, Cho KM, Park SH, Chang HS. Vibration characteristics of endodontic motors with different motion. J Korean Diet Assoc 2014;52:734-743.
  11. Choi DM, Kim JW, Park SH, Cho KM, Kwak SW, Kim HC. Vibrations generated by several nickel-titanium endodontic file systems during canal shaping in an ex vivo model. J Endod 2017;43:1197-1200.
  12. Di Nasso L, Nizzardo A, Pace R, Pierleoni F, Pagavino G, Giuliani V. Influences of 432 Hz music on the perception of anxiety during endodontic treatment: a randomized controlled clinical trial. J Endod 2016;42:1338-1343.
  13. Kalpakjian S. Manufacturing engineering and technology. London: Pearson Education; 2001.
  14. Siddhpura M, Paurobally R. A review of chatter vibration research in turning. Int J Mach Tools Manuf 2012;61:27-47.
  15. Quintana G, Ciurana J. Chatter in machining processes: a review. Int J Mach Tools Manuf 2011;51:363-376.
  16. Zupanc J, Vahdat-Pajouh N, Schafer E. New thermomechanically treated NiTi alloys - a review. Int Endod J 2018;51:1088-1103.
  17. Isik V, Kwak SW, Abu-Tahun IH, Ha JH, Kayahan MB, Kim HC. Effect of shaft length on the torsional resistance of rotary nickel-titanium instruments. J Endod 2020;46:295-300.
  18. Gagliardi J, Versiani MA, de Sousa-Neto MD, Plazas-Garzon A, Basrani B. Evaluation of the shaping characteristics of ProTaper Gold, ProTaper NEXT, and ProTaper Universal in curved canals. J Endod 2015;41:1718-1724.
  19. Nayak A, Kankar PK, Jain PK, Jain N. Force and vibration generated in apical direction by three endodontic files of different kinematics during simulated canal preparation: an in vitro analytical study. Proc Inst Mech Eng H 2019;233:839-848.
  20. Ruddle CJ. Single-file shaping technique: achieving a gold medal result. Dent Today 2016;35:98-103.
  21. Yoo YJ, Lim BS, Kim JW, Baek SH, Lee IB. Assessment of torque and apical load during root canal preparation using reciprocating nickel-titanium files. Korean J Dent Mater 2014;41:9-18.