Influência dos sistemas rotatórios e/ou oscilatórios recíprocos nas alterações morfológicas anatômicas de canais radiculares atresiados e curvos
Influence of the rotary and/or oscillatory reciprocating systems in the morphological changes of narrow and curved molar root canals anatomy
Rosa, Joedy Maria Costa Santa; Dametto, Fábio Roberto; Gadê-Neto, Cicero Romão; Carvalho, Rejane Andrade de; Albuquerque, Diana Santana de; Pameijer, Cornelis; Tanomaru-Filho, Mário; Leonardo, Renato de Toledo
http://dx.doi.org/10.1590/S1807-25772012000500010
Rev. odontol. UNESP, vol.41, n5, p.353-359, 2012
Abstract
This study evaluated four mechanized Endodontic systems, ProTaper Universal, K3 Endo, Twisted file (rotary) and the oscillatory reciprocating system Endo – Eze TiLOS, in order to verify and measure alterations in original anatomy with deviations at cervical, medium and apical root canal thirds. Material and method: It was used MB root canals of 60 extract human lower molars, to produce a line of severe angles, according to the classification of Schneider. Samples were included in Ester vinyl resin, mounted in the Teflon Furnace, transversally sectioned at the cervical, middle and apical thirds, which were subsequently photographed using a digital camera Cyber Shot DSC-TX10,attached to an operating microscope 3101XY DFVasconcelos with 40× magnification in order to measure the anatomical transversal area of the root canal, using the software AutoCAD 2008, comparing pre and post-instrumentation. All samples assembled in the Furnace also were submitted to x-ray in a standardized way to enable the comparison of the angle of Schneider pre-and post-instrumentation. Once collected the data, they were compared statistically using the program BioEstat 5.0. Result: The analysis of the results showed that in the cervical third, rotary systems were more effective than Endo-Eze TiLOS System with statistically significant differences (p ≤ 0,05). Apical and middle third changes in anatomy were similar, but apically, the ProTaper system caused more deviations when comparing the angle of Schneider,and areas before and after instrumentation(p ≤ 0,05). Conclusion: It was concluded that all the systems caused alteration in the original anatomy of the root canal when parameters as angle of Schneider and areas before and after preparation were used.
Keywords
Root canal therapy, instrumentation, endodontics.
Resumo
Esse estudo avaliou quatro sistemas endodônticos mecanizados, ProTaper Universal, K3 Endo, Twisted file, (rotatórios) e Endo – Eze TiLOS(oscilatório) para verificar e medir as alterações na anatomia original do canal radicular e desvios nos terços cervical,médio e apical. Material e método: Foram utilizadas 60 raízes mésio‑vestibulares de molares inferiores extraídos de humanos para coleta de medições de ângulos e classificação de Schneider. Os espécimes foram incluídos em resina de Éster vinil e montadas em muflas de Teflon, seccionadas transversalmente nos terços cervical,médio e apical para posterior fotografia usando-se câmera digital Cyber Shot DSC-TX10,acoplada à um microscópio 3101XY DFVasconcelos com 40× de aumento para se mensurar a àrea da secção anatômica transversal do canal radicular utilizando o programa AutoCAD 2008, comparando as àreas pré e pós instrumentação. Todos os espécimes ajustados na mufla foram radiografados de maneira padronizada para permitir a avaliação do ângulo de Schneider pré e pós-instrumentação.Uma vez coletados os dados,os mesmos foram comparados estatisticamente usando-se o programa BioEstat 5.0. Resultado: A análise dos resultados mostrou que no terço cervical os sistemas rotatórios foram mais eficazes que o sistema oscilatório Endo-Eze TiLOS,com diferenças estatisticamente significantes (p ≤ 0,05). As alterações anatômicas relativas ao desvio nos terços apical e médio foram similares, mas apicalmente o sistema ProTaper promoveu mais desvios quando se avaliou o ângulo de Schneider pré e pós instrumentação (p ≤ 0,05). Conclusão: Utilizando-se a alteração do ângulo de Schneider e a diferença entre área dentinária inicial (antes do preparo) e final (pós-preparo), concluiu-se que todos os sistemas causaram desvio na anatomia original do canal radicular.
Palavras-chave
Tratamento de canal radicular, instrumentação, endodontia.
References
1. Leonardo MR, Leonardo RT. Endodontics - biological concepts and technological resources. São Paulo: Artes Médicas; 2011.
2. Morgan A, Alexander I. Endodontics - does the biology matter? Roots. 2010;6:36-8.
3. Trope M, Debelian G. BioRace NiTi complete endodontic system: achieving biologically desirable apical sizes-safely and efficiently. Endod Prac. 2011;4:31-6
4. Seltzer FC, Kwon TK, Karabucak B. Comparison of apical transportation between two rotary file systems and two hybrid rotary instrumentation sequences. J Endod. 2010;36:1226-9. PMid:20630304. http://dx.doi.org/10.1016/j.joen.2010.03.011
5. Kunert GG, Fontanella VRC, Moura AAM, Barletta FB. Analysis of apical root transportation associated with Protaper Universal F3 and F4 instruments by using digital subtraction radiography. J Endod. 2010; 36: 1052-5. PMid:20478464. http://dx.doi.org/10.1016/j.joen.2010.02.004
6. De-Deus G, Moreira EJL, Lopes HP, Elias CN. Extended cyclic fatigue life of F2 ProTaper instruments used in reciprocating movement. Int Endod J. 2010;43:1063-8. http://dx.doi.org/10.1111/j.1365-2591.2010.01756.x
7. Schneider SW. A comparison of canal preparation in straight and curved root canal. Oral Surg. 1971;32:271–5 http://dx.doi.org/10.1016/0030-4220(71)90230-1
8. Chan AWK, Cheung GSP. A comparison of stainless steel and nickel-titanium K-files in curved root canals. Int Endod J. 1996; 29:370-5. http://dx.doi.org/10.1111/j.1365-2591.1996.tb01400.x
9. Coleman CL, Svec TA. Analysis of NiTi versus stainless steel instrumentation in resin simulated canals. J Endod. 1997;23:232-5. http://dx.doi.org/10.1016/S0099-2399(97)80053-2
10. Glosson CR, Haller RH, Dove SB, De Rio CE. A comparison of root canal preparations using Ni-Ti hand, Ni-Ti engine-driven, and K-flex endodontic instruments. J Endod. 1995;21:146-51. http://dx.doi.org/10.1016/S0099-2399(06)80441-3
11. Goldberg F, Araújo JA. Comparison of three instruments in the preparation of curved root canals. Endod Dent Traumatol. 1997;13:265-8. http://dx.doi.org/10.1111/j.1600-9657.1997.tb00053.x
12. Haller RH, Glosson CR, Dove SB, del Rio CE. Nickel-titanium hand and engine- driven root canal preparations: a comparison study [abstract PC12]. J Endod. 1994;20:209. http://dx.doi.org/10.1016/S0099-2399(06)80419-X
13. Harlan AL, Nicholls JI, Steiner JC. A comparison of curved canal instrumentation using nickel-titanium or stainless steel files with the balanced-force technique. J Endod. 1996;22:410-3. http://dx.doi.org/10.1016/S0099-2399(96)80241-X
14. Kosa DA, Marshall G, Baumgartner JC. An analysis of canal centering using mechanical instrumentation techniques. J Endod. 1999;25:441‑5. http://dx.doi.org/10.1016/S0099-2399(99)80275-1
15. Kuhn WG. Effect of tip design of nickel-titanium and stainless steel files on root canal preparation. J Endod. 1977;23:735-8. http://dx.doi.org/10.1016/S0099-2399(97)80345-7
16. Rhodes JS, Pitt Ford TR, Lynch JA, Liepins PJ, Curtis RV. A comparison of two nickel-titanium instrumentation techniques in teeth using microcomputed tomography. Int Endod J. 2000; 33:279-85. http://dx.doi.org/10.1046/j.1365-2591.1999.00306.x
17. Royal JR, Donnely JC. A comparison of maintenance of canal curvature using balanced-force instrumentation with three different file types. J Endod. 1995;21:300-4. http://dx.doi.org/10.1016/S0099-2399(06)81005-8
18. Serene TP, Adams JD, Saxena A. Nickel-titanium instruments: applications in endodontis. St. Louis: Ishiyaku Euroamericana; 1995.
19. Short JA, Morgan LA, Baumgartner JC. A comparison of canal centering ability of four instrumentation techniques. J Endod. 1997;23:503‑7. http://dx.doi.org/10.1016/S0099-2399(97)80310-X
20. Tucker DM, Wenckus CS, Bentkover SK. Ca nal wall planning by engine-driven nickel-titanium instruments, compared with stainless-steel hand instrumentation. J Endod. 1997;23:170-3. http://dx.doi.org/10.1016/S0099-2399(97)80269-5
21. Deplazes P, Peters C, Barbakow F. Comparing apical preparations of root canals shaped by nickel-titanium rotary instruments and nickel-titanium hand instruments. J Endod. 2001;27:196-202. PMid:11487151. http://dx.doi.org/10.1097/00004770-200103000-00015
22. Gluskin AH, Brown DC, Buchanan LSA. A reconstructed computerized tomographic comparison of Ni-Ti rotary GT files versus traditional instruments in canal shaped by novice operators. Int Endod J. 2001;34:476-84. http://dx.doi.org/10.1046/j.1365-2591.2001.00422.x
23. Bergmans L, Van Cleynenbrenugel J, Beullens M, Wevers M, Van Meerbeek B, Lambrechts P. Smooth flexible versus active tapered shaft design using NiTi rotary instruments. Int Endod J. 2002;35:820-8. http://dx.doi.org/10.1046/j.1365-2591.2002.00574.x
24. Heck AR. Avaliação da alteração morfológica do canal radicular após o preparo com três técnicas de instrumentação e do tempo gasto para sua execução [tese de doutorado]. Piracicaba: Faculdade de Odontologia da UNICAMP; 2005.
25. Veltri M, Mollo A, Pini PP, Ghelli LF, Balleri P. In vitro comparison of shaping abilities of Protaper and GT rotary files. J Endod. 2004;30:163‑6. PMid:15055435. http://dx.doi.org/10.1097/00004770-200403000-00009
26. Ozgur Uyanik M, Cehreli ZC, Ozgen Mocan B, Tasman Dagli F. Comparative evaluation of thrre nickel-titanium instrumentation systems em human teeth using computer tomography. J Endod. 2006;32:668-71. PMid:16793477. http://dx.doi.org/10.1016/j.joen.2005.12.015
27. Rasquin LC, Carvalho BF, Lima RKP. In vitro evaluation of root canal preparation using oscillatory and rotary systems in flattened root canals. J Appl Oral Sci. 2007;15:65-9. PMid:19089103. http://dx.doi.org/10.1590/S1678-77572007000100014
28. Zanin FP. Avaliação "in vitro" de três diferentes técnicas de instrumentação quanto ao deslocamento do canal radicular [dissertação mestrado]. Araraquara: Faculdade de Odontologia da UNESP; 2006.
29. Camargo JMP. Estudo comparativo do preparo do canal radicular de dentes artificiais utilizando diferentes técnicas automatizadas de instrumentação [tese doutorado]. Araraquara: Faculdade de Odontologia da UNESP;2004.
30. Paque F, Barbakow F, Peters OA. Root canal preparation with Endo-Eze AET: changes in root canal shape assessed by micro-computed tomography. Int Endod J. 2005;38:456–64. PMid:15946266. http://dx.doi.org/10.1111/j.1365-2591.2005.00968.x
31. Kariem MEB, Elmallah, WE. Comparison of canal transportation and changes in canal curvature of two Nickel-Titanium rotary instruments. J Endod, 2011;37:1290-2. PMid:21846551. http://dx.doi.org/10.1016/j.joen.2011.05.024
32. Fayyad DM, Elgendy AAE. Cutting efficiency of Twisted versus machined Nickel-Titanium endodontic files. J Endod. 2011;37:1143–6. PMid:21763910. http://dx.doi.org/10.1016/j.joen.2011.03.036
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