Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
권호 표지
DOI QR코드

DOI QR Code

Fracture incidence of Reciproc instruments during root canal retreatment performed by postgraduate students: a cross-sectional retrospective clinical study

  • Received : 2021.01.08
  • Accepted : 2021.02.21
  • Published : 2021.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

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.

Keywords

References

  1. Siqueira JF Jr, Rocas IN. Clinical implications and microbiology of bacterial persistence after treatment procedures. J Endod 2008;34:1291-1301.e3. https://doi.org/10.1016/j.joen.2008.07.028
  2. Mollo A, Botti G, Prinicipi Goldoni N, Randellini E, Paragliola R, Chazine M, Ounsi HF, Grandini S. Efficacy of two Ni-Ti systems and hand files for removing gutta-percha from root canals. Int Endod J 2012;45:1-6. https://doi.org/10.1111/j.1365-2591.2011.01932.x
  3. Saad AY, Al-Hadlaq SM, Al-Katheeri NH. Efficacy of two rotary NiTi instruments in the removal of gutta-percha during root canal retreatment. J Endod 2007;33:38-41. https://doi.org/10.1016/j.joen.2006.08.012
  4. Marques da Silva B, Baratto-Filho F, Leonardi DP, Henrique Borges A, Volpato L, Branco Barletta F. Effectiveness of ProTaper, D-RaCe, and Mtwo retreatment files with and without supplementary instruments in the removal of root canal filling material. Int Endod J 2012;45:927-932. https://doi.org/10.1111/j.1365-2591.2012.02051.x
  5. Akbulut MB, Akman M, Terlemez A, Magat G, Sener S, Shetty H. Efficacy of Twisted File Adaptive, Reciproc and ProTaper Universal Retreatment instruments for root-canal-filling removal: a cone-beam computed tomography study. Dent Mater J 2016;35:126-131. https://doi.org/10.4012/dmj.2015-214
  6. Alves FR, Marceliano-Alves MF, Sousa JC, Silveira SB, Provenzano JC, Siqueira JF Jr. Removal of root canal fillings in curved canals using either reciprocating single- or rotary multi-instrument systems and a supplementary step with the XP-Endo Finisher. J Endod 2016;42:1114-1119. https://doi.org/10.1016/j.joen.2016.04.007
  7. Crozeta BM, Silva-Sousa YT, Leoni GB, Mazzi-Chaves JF, Fantinato T, Baratto-Filho F, Sousa-Neto MD. Micro-computed tomography study of filling material removal from oval-shaped canals by using rotary, reciprocating, and adaptive motion systems. J Endod 2016;42:793-797. https://doi.org/10.1016/j.joen.2016.02.005
  8. Zuolo AS, Mello JE Jr, Cunha RS, Zuolo ML, Bueno CES. Efficacy of reciprocating and rotary techniques for removing filling material during root canal retreatment. Int Endod J 2013;46:947-953. https://doi.org/10.1111/iej.12085
  9. Rios Mde A, Villela AM, Cunha RS, Velasco RC, De Martin AS, Kato AS, Bueno CES. Efficacy of 2 reciprocating systems compared with a rotary retreatment system for gutta-percha removal. J Endod 2014;40:543-546.
  10. Kirici D, Demirbuga S, Karatas E. Micro-computed tomographic assessment of the residual filling volume, apical transportation, and crack formation after retreatment with Reciproc and Reciproc Blue systems in curved root canals. J Endod 2020;46:238-243. https://doi.org/10.1016/j.joen.2019.11.003
  11. Silva EJNL, Vieira VTL, Hecksher F, Dos Santos Oliveira MRS, Dos Santos Antunes H, Moreira EJL. Cyclic fatigue using severely curved canals and torsional resistance of thermally treated reciprocating instruments. Clin Oral Investig 2018;22:2633-2638. https://doi.org/10.1007/s00784-018-2362-9
  12. Ferreira F, Adeodato C, Barbosa I, Aboud L, Scelza P, Zaccaro Scelza M. Movement kinematics and cyclic fatigue of NiTi rotary instruments: a systematic review. Int Endod J 2017;50:143-152. https://doi.org/10.1111/iej.12613
  13. Varela-Patino P, Ibanez-Parraga A, Rivas-Mundina B, Cantatore G, Otero XL, Martin-Biedma B. Alternating versus continuous rotation: a comparative study of the effect on instrument life. J Endod 2010;36:157-159.
  14. Cunha RS, Junaid A, Ensinas P, Nudera W, Bueno CES. Assessment of the separation incidence of reciprocating WaveOne files: a prospective clinical study. J Endod 2014;40:922-924. https://doi.org/10.1016/j.joen.2014.03.016
  15. Bueno CSP, Oliveira DP, Pelegrine RA, Fontana CE, Rocha DGP, Bueno CES. Fracture incidence of WaveOne and Reciproc files during root canal preparation of up to 3 posterior teeth: a prospective clinical study. J Endod 2017;43:705-708. https://doi.org/10.1016/j.joen.2016.12.024
  16. Shen Y, Coil JM, Mo AJ, Wang Z, Hieawy A, Yang Y, Haapasalo M. WaveOne rotary instruments after clinical use. J Endod 2016;42:186-189. https://doi.org/10.1016/j.joen.2015.10.008
  17. Plotino G, Grande NM, Porciani PF. Deformation and fracture incidence of Reciproc instruments: a clinical evaluation. Int Endod J 2015;48:199-205. https://doi.org/10.1111/iej.12302
  18. Caballero-Flores H, Nabeshima CK, Binotto E, Machado ME. Fracture incidence of instruments from a single-file reciprocating system by students in an endodontic graduate programme: a cross-sectional retrospective study. Int Endod J 2019;52:13-18. https://doi.org/10.1111/iej.12982
  19. Schneider SW. A comparison of canal preparations in straight and curved root canals. Oral Surg Oral Med Oral Pathol 1971;32:271-275. https://doi.org/10.1016/0030-4220(71)90230-1
  20. Ozyurek T, Demiryurek EO. Efficacy of different nickel-titanium instruments in removing gutta-percha during root canal retreatment. J Endod 2016;42:646-649. https://doi.org/10.1016/j.joen.2016.01.007
  21. De-Deus G, Belladonna FG, Zuolo AS, Simoes-Carvalho M, Santos CB, Oliveira DS, Cavalcante DM, Silva EJNL. Effectiveness of Reciproc Blue in removing canal filling material and regaining apical patency. Int Endod J 2019;52:250-257.
  22. Iqbal MK, Kohli MR, Kim JS. A retrospective clinical study of incidence of root canal instrument separation in an endodontics graduate program: a PennEndo database study. J Endod 2006;32:1048-1052. https://doi.org/10.1016/j.joen.2006.03.001
  23. Ehrhardt IC, Zuolo ML, Cunha RS, De Martin AS, Kherlakian D, Carvalho MC, Bueno CES. Assessment of the separation incidence of mtwo files used with preflaring: prospective clinical study. J Endod 2012;38:1078-1081.
  24. Yared GM, Dagher FE, Machtou P, Kulkarni GK. Influence of rotational speed, torque and operator proficiency on failure of Greater Taper files. Int Endod J 2002;35:7-12. https://doi.org/10.1046/j.1365-2591.2002.00443.x
  25. Al-Omari MA, Aurich T, Wirtti S. Shaping canals with ProFiles and K3 instruments: does operator experience matter? Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2010;110:e50-e55. https://doi.org/10.1016/j.tripleo.2010.03.003
  26. Plotino G, Grande NM, Testarelli L, Gambarini G. Cyclic fatigue of Reciproc and WaveOne reciprocating instruments. Int Endod J 2012;45:614-618. https://doi.org/10.1111/j.1365-2591.2012.02015.x
  27. Di Fiore PM, Genov KA, Komaroff E, Li Y, Lin L. Nickel-titanium rotary instrument fracture: a clinical practice assessment. Int Endod J 2006;39:700-708. https://doi.org/10.1111/j.1365-2591.2006.01137.x
  28. Knowles KI, Hammond NB, Biggs SG, Ibarrola JL. Incidence of instrument separation using LightSpeed rotary instruments. J Endod 2006;32:14-16. https://doi.org/10.1016/j.joen.2005.10.008
  29. Wolcott S, Wolcott J, Ishley D, Kennedy W, Johnson S, Minnich S, Meyers J. Separation incidence of ProTaper rotary instruments: a large cohort clinical evaluation. J Endod 2006;32:1139-1141. https://doi.org/10.1016/j.joen.2006.05.015
  30. Munoz E, Forner L, Llena C. Influence of operator's experience on root canal shaping ability with a rotary nickel-titanium single-file reciprocating motion system. J Endod 2014;40:547-550. https://doi.org/10.1016/j.joen.2013.08.027
  31. Machado R, Junior CS, Colombelli MF, Picolli AP, Junior JS, Cosme-Silva L, Garcia LDFR, Alberton LR. Incidence of ProTaper universal system instrument fractures - a retrospective clinical study. Eur Endod J 2018;3:77-81.
  32. Cheung GS. Instrument fracture: mechanisms, removal of fragments, and clinical outcomes. Endod Topics 2009;16:1-26.
  33. Parashos P, Messer HH. Rotary NiTi instrument fracture and its consequences. J Endod 2006;32:1031-1043. https://doi.org/10.1016/j.joen.2006.06.008
  34. Ungerechts C, Bardsen A, Fristad I. Instrument fracture in root canals - where, why, when and what? A study from a student clinic. Int Endod J 2014;47:183-190. https://doi.org/10.1111/iej.12131