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2012, Number 1

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Rev Odont Mex 2012; 16 (1)

In vitro study of erosion caused by EDTA on root canal dentin

Liñán FM, González PG, Ortiz VM, Ortiz VG, Mondragón BTD, Guerrero LG

Language: Spanish
References: 38
Page: 8-13
PDF size: 206.69 Kb.


ABSTRACT

In endodontic treatment, disinfection of the root canal system guarantees success. Use of chelating agents like etilendiaminotetraacetic acid (EDTA) is indispensable to achieve such a goal. Nevertheless, dentin experiences topographic structural changes which can lead to endodontic failure. This study was almost experimental. Forty large, straight canals were used for it. Use of instruments in the canals followed the balanced forces technique. Hand instruments were used in the crown and apex, using Flex-R files in the first and second series, each instrument was irrigated with NaOCl. Final irrigation consisted of 3 mL 17% EDTA, followed by 5 mL 5.25% NaOCl. Roots were longitudinally cut with diamond disc. Samples were prepared with a coating of gold in plasma, so as to be able to be examined with a Scanning Electron Microscope. The erosion extent of middle and apex third of the root canal were measured. When using 17% EDTA results were: in the middle third, 50% severe erosion and 25% moderate erosion, and in the apical third 30% severe erosion and 25.7% moderate erosion. The dentin alteration caused by EDTA must be considered when filling (obturating)


REFERENCES

  1. Ingle-Bakland. Endodoncia. 5ta edición. Editorial McGraw-Hill Interamericana. México, D.F. 2004: 505, 581-82.

  2. Canalda C, Brau E. Endodoncia, técnicas clínicas y bases científicas. Editorial Masson, S.A. Barcelona, España 2001: 173-75.

  3. Rodríguez-Ponce A. Endodoncia, consideraciones actuales. Editorial Amolca, S.A. de C.V. Caracas Venezuela 2003: 91-92.

  4. Estrela C. Ciencia endodóntica. 1a edición. Editorial Artes Médicas Latinoamericana. Sao-Paulo, Brasil 2005: 535-40.

  5. Leonardo MR. Endodoncia, tratamiento de conductos radiculares, principios técnicos y biológicos. Editorial Artes Médicas Latinoamericana. Sao-Paulo, Brasil. 2005; 2: 438-76.

  6. Canalda, 2001 op cit.

  7. Rodríguez-Ponce, 2003 op cit.

  8. Walton-Torabinejad. Endodoncia, principios y práctica. 2da edición. Editorial Mc Graw-Hill Interamericana. México, D.F. 1996: 229.

  9. Canalda, 2001 op cit.

  10. Leonardo, 2005 op cit.

  11. Tronstad L. Endodoncia clínica. Editorial Masson-Salvat Odontología. Barcelona, España 1993: 106.

  12. Fraser JG. Chelating agents: Their softening effect on root canal dentin. Oral Surg 1974; 37 (5): 803-11.

  13. Goldberg F, Abramovich A. Analysis of the effect of EDTAC on the dentinal Walls of the root canal. J Endod 1977; 3 (3): 101-5.

  14. Goldberg S. Endodoncia, técnica y fundamentos. Editorial Médica Panamericana. Madrid, España 2002: 130-31.

  15. Dogan H, Calt S. Effects of chelating agents and sodium hypochlorite on mineral content of root dentin. J Endod 2001; 27 (9): 578-80.

  16. Dogan, 2001 op cit.

  17. Fróes JA, Horta HG, da Silveira AB. Smear layer influence on the apical seal of tour different obturation technique. J Endod 2000; 26 (6): 351-4.

  18. Goldberg F, Spielberg C. The effect of EDTAC and the variation of its working time analyzed whit scanning electron microscopy. Oral Surg 1982; 53 (1): 74-7.

  19. Gutierrez JH, Villena F, Jofré A, Amin M. Bacterial infiltration of dentin as influenced by proprietary chelating agents. J Endod 1982; 8 (10): 448-54.

  20. Cury JA, Bragotto C, Valdrigui L. The demineralizing efficiency of EDTA solutions on dentin. Oral Surg 1981; 52 (4): 446-48.

  21. Serper A, Calt S. The demineralizing effects of EDTA at different concentrations and pH. J Endod 2002; 28 (7): 501-2.

  22. Seidberg BH, Schilder H. An evaluation of EDTA in endodontics. Oral Surg 1974; 37 (4): 609-20.

  23. González PG, Liñán FM, Ortiz VM, Ortiz VG, Del Real LA, Guerrero-Lara G. Estudio comparativo in vitro de tres acondicionadores de dentina para evaluar apertura de los túbulos dentinarios en conductos radiculares. Revista Odontológica Mexicana 2009; 13 (4): 217-233.

  24. Calt S, Serper A. Time-dependent effects of EDTA on dentin structures. J Endod 2002; 28 (1): 17-9.

  25. Serper, 2002 op cit.

  26. González, Liñán 2009 op cit.

  27. Niniforuk G, Sreebny L. Demineralization of hard tissues by organic chelating agents at neutral ph. J Dent Res 1953; 32 (6): 859-67.

  28. Fraser JG. Chelating agents: Their softening effect on root canal dentin. Oral Surg 1974; 37 (5): 803-11.

  29. Saquy PC, Maia Campos G, Sousa Neto MD, Guimarães LF, Pécora JD. Evaluation of chelating action of EDTA in association with Dakin’s solution. Braz Dent J 1994; 5 (1): 65-70.

  30. Goldberg F, Bernat MI, Spielberg C, Massone EJ, Piovano SA. Analysis of the effect of ethylenediaminetetraacetic acid on the apical seal of root canal fillings. J Endod 1985; 11 (12): 544-7.

  31. Gutiérrez, 1982 op cit.

  32. Estrela, 2005 op cit.

  33. Calt, 2002 op cit.

  34. Serper, 2002 op cit.

  35. Perez F, Rouqueyrol-Pourcel N. Effect of a low-concentration EDTA solution on root canal walls: a scanning electron microscopic study. Oral Surg Med Oral Pathol Oral Radiol Endod 2005; 99 (3): 383-7.

  36. Fraser, 1974 op cit.

  37. Goldberg, 1985 op cit.

  38. Tay F, Pashley R, Loushine M, Doyle W. Ultrastucture of smear layer-covered intra-radicular dentin after irrigation with Biopure MTAD. J Endodont 2006; 32 (3): 218-221.




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