Efficacy of Different Retreatment Techniques in Molar Root Canals: An ex vivo Study

Year 2010, Volume: 37 Issue: 1 - Volume: 37 Issue: 1, 19 - 28, 01.05.2010

Esma Asuman Çavdar Tetik Mehmet Sinan Akçiçek Serdar Uysal Meltem Dartar Öztan

Abstract

The aim of this study was to evaluate the efficacy of two different rotary instruments with and without a solvent versus hand files in the removal of gutta-percha root fillings. Sixty extracted human molar teeth were used for this study. Mesiobuccal canals of teeth were prepared and filled with sealer and guttapercha. Before retreatment was applied, radiographs were taken. Specimens were divided into six groups: Group 1:Protaper Universal Rotary Retreatment System, Group 2: Protaper Universal Rotary Retreatment System with eucalyptol , Group 3: Profile, Group 4: Profile with eucalyptol, Group 5: Hedström files Group 6: Hedström files with eucalyptol. During retreatment procedure, the operating time was recorded. After removing root canal fillings from the canals, radiographs were taken, digitalized and analyzed in a software for image analysis. The ratio of remaining obturation material to root canal surface was derived. In this study gutta-percha and sealer remnants were present within the root canal in all test groups. Statistical analysis showed that there was no significant difference between the techniques P>0.05 ; however, a significant statistical difference P

Keywords

Root canal retreatment, Eucalyptol, Gutta-percha removal, Rotary instruments, Hedström files

Molar kök kanallarında farklı kanal tedavisi yenileme tekniklerinin etkinliği: ex vivo çalışma

Abstract

Bu çalışmanın amacı iki farklı döner aletin ve el aletlerinin çözücülü ve çözücüsüz kullanılarak gütaperka kök kanal dolgusunun uzaklaştırılmasında etkinliklerinin belirlenmesidir. kanal dolguları uzaklaştırıldıktan sonra radyografiler alınmış, dijital ortama aktarılmış ve görüntüler bir yazılım programında analiz edilmiştir. Kök kanal yüzeyindeki dolgu materyali kalıntılarının oranı değerlendirilmiştir. Bu çalışmada tüm test gruplarındaki kök kanallarında gütaperka ve kanal patı kalıntıları mevcuttur. İstatistiksel analiz teknikler arasında anlamlı bir fark olmadığını göstermiştir P>0.05 , bununla birlikte kanal dolgusunun boşaltılma süresi açısından gruplar arasında anlamlı farklar P

Keywords

Kök kanal tedavisinin yenilenmesi, Ökaliptol, Gutaperkanın boşaltılması, Döner aletler, Hedström eğeler

References

• 1. Nair PN, Sjogren U, Kahnberg KE, Krey G, Sundqvist G. Intraradicular bacteria and fungi in root-filled, asymptomatic human teeth with therapy-resistant periapical lesions long-term light and electron microscopic follow-up study. J Endod 1990; 16: 508-88.
• 2. Sjogren U, Figdor D, Persson S, Sundqvist G. Influence of infection at the time of root filling on the outcome of endodontic treatment of teeth with apical periodontitis. Int Endod J 1997; 30: 297-306.
• 3. Molander A, Reit C, Dahlen G, Kvist T. Microbiological status of root-filled teeth with apical periodontitis. Int Endod J 1998; 31: 1-7.
• 4. Siqueira JF, Jr. Aetiology of root canal treatment failure: why well-treated teeth can fail. Int Endod J 2001; 34: 1-10.
• 5. Stabholz A, Friedman S. Endodontic retreatment-case selection and technique. Part 2. Treatment planning for retreatment. J Endod 1988; 14: 607-14.
• 6. Sandhya UM, Mohan Thomas Nainan, Mangala TM, Sharad Kamat. To treat and to retreat “Protaper universal rotary system, the double delight". Endodontology 2009; 21: 40- 5.
• 7. Wilcox LR, Krell KV, Madison S, Rittman B. Endodontic retreatment; evaluation of gutta-percha and sealer removal and canal reinstrumentation. J Endod 1987; 13: 453-7.
• 8. Lewis R, Block R. Management of endodontic failures. Oral Surg Oral Med Oral Pathol 1988; 66: 7111-21.
• 9. Friedman S, Stabholz A, Tamse A. Endodontic retreatment-case selection and technique. Part 3: retreatment techniques. J Endod 1990; 16: 543-9.
• 10. Hulsmann M, Stotz S. Efficacy, cleaning ability and safety of different devices for gutta-percha removal in root canal retreatment. Int Endod J 1997; 30: 227-33.
• 11. Tasdemir T, Er K, Yildirim T, Çelik D. Efficacy of three rotary NiTi instruments in removing gutta-percha from root canals. Int Endod J 2008; 41: 191-6.
• 12. Imura N, Kato AS, Hata G-I, Uemura M, Toda T, Weine F. A comparison of the relative efficacies of four hand and rotary instrumentation techniques during endodontics retreatment. Int Endod J 2000; 33: 361-6.
• 13. Ferreira JJ, Rhodes JS, Pitt Ford TR. The efficacy of gutta-percha removal using Profiles. Int Endod J 2001; 34: 267-74.
• 14. Barrieshi-Nussair MK. Gutta-percha retreatment: effectiveness of nickel-titanium rotary instruments versus stainless steel hand files. J Endod 2002; 28: 454-6.
• 15. Gu LS, Ling JQ, Wei X, Huang XY. Efficacy of ProTaper Universal rotary retreatment system for gutta-percha removalfrom root canals. Int Endod J 2008; 41: 288-95.
• 16. Hammad M, Qualtrough A, Silikas N. Three-dimensional evaluation of effectiveness of hand and rotary instrumentation for retreatment of canals filled with different materials. J Endod 2008; 34: 1370-3.
• 17.Só MVR, Saran C, Magro ML, VierPelisser FV, Munhoz M. Efficacy of ProTaper retreatment system in root canals filled with gutta-percha and two endodontic sealers. J Endod 2008; 34: 1223-5.
• 18.de Carvalho Maciel AC, Zaccaro Scelza MF. Efficacy of automated versus hand instrumentation during root canal retreatment: an ex vivo study. Int Endod J 2006; 39: 779- 84.
• 19. Zmener O, Pameijer CH, Banegas G. Retreatment efficacy of hand versus automated instrumentation in oval-shaped root canals: an ex vivo study. Int Endod J 2006; 39: 521-6.
• 20. Kosti E, Lambrianidis T, Economides N, Neofitou C. Ex vivo study of the efficacy H-files and rotary NiTi instruments to remove gutta-percha and four types of sealer. Int Endod J 2006; 39: 48-54.
• 21. Wilcox LR. Endodontic retreatment: ultrasonics and chloroform as the final step in reinstrumentation. J Endod 1989; 15: 125-8.
• 22. Imura N, Zuolo ML, Ferreira MOF, Novo NF. Effectiveness of the Canal Finder and hand instrumentation in removal of guttapercha root fillings during root canal retreatment. Int Endod J 1995; 29: 382-6.
• 23. Frajlich SR, Goldberg F, Massone EJ, Cantarini C, Artaza LP. Comparative study of retreatment of Thermafil and lateral condensation endodontic fillings. Int Endod J 1998; 31: 354 -7.
• 24. Cunha RS, de Martin AS, Barros PP, Silva FM, Jacinto RC, Bueno CS. In vitro evaluation of the cleansing working time and analysis of the amount of gutta-percha or resilon remnants in the root canal walls after instrumentation for endodontic retreatment. J Endod 2007; 33: 1426-8.
• 25. Sae-Lim V, Rajamanickam I, Lim BK, Lee HL. Effectiveness of Profile .04 taper rotary instruments in endodontic retreatment. J Endod 2000; 26: 100-4.
• 26. Bueno CES, Delboni MG, Araújo ra, carrara hj, cunha rs. Effectiveness of rotary and hand files in gutta-percha and sealer removal using chloroform or chlorexidine gel. Braz Dent J 2006; 17: 139-43.
• 27. 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.
• 28.Giuliani V, Cocchetti R, Pagavino G. Efficacy of ProTaper Universal retreatment files in removing filling materials during root canal retreatment. J Endod 2008; 34: 1381-4.
• 29. Somma F, Cammarota G, Plotino G. Effectiveness of manual and mechanical instrumentation for the retreatment of three different root canal filling materials. J Endod 2008; 34: 466-9.
• 30. Hunter KR, Doblecki W, Pelleu GB. Halothane and Eucalyptol as alternative to chloroform for softening gutta-percha. J Endod 1991; 17: 310-3.
• 31.Wilcox LR. Endodontic retreatment with halothane versus chloroform solvent. J Endod 1995; 21: 305-7.
• 32. Oyama KON, Siqueira LE; Santos M. In vitro study of effect of solvent on root canal retreatment. Braz Dent J 2002; 13: 208-11.
• 33. Brodin P, Roed A, Aars H, Orstavik D. Neurotoxic effects of root filling materials on rat phrenic nerve in vitro. J Dent Res 1982; 61: 1020-3.
• 34. U.S. Food And Drug Administration. Memorandum to state drug officials. Washington, DC: U.S. Government Printing Office, 1974.
• 35. Cohen S, Burns RC. Pathways of the pulp 3rd ed. St. Louis: CV Mosby, 1984: 205- 24, 246-51.
• 36. U.S. Department of Health and Human Services. Public Health Service Fourth Annual Report on Carcinogens. PB 85-134663, 1985.
• 37. Morse D, Wilcko J. Gutta percha-euca percha. J Acad Gen Dent 1978; 26: 58-64.
• 38. Low D, Rowal BD, Griffin WJ. Antibacterial action of essential oils. Planta Med 1974; 26: 184-9.
• 39. Maruzzella JC, Sicurella NA. Antibacterial activity of essential oil vapors. J Am Pharm Assoc 1960; 49: 692-4.
• 40. Friedman S, Moshonov J, Trope M. Residue of gutta-percha and glass ionomer cement sealer following root canal retreatment. Int Endod J 1993; 26: 169-72.
• 41.Zuolo ML, Walton RE. Instrument deterioration with usage: nickel-titanium versus stainless steel. Quintessence Int 1997; 28: 397-402.
• 42. Thompson SA, Dummer PMH. Shaping ability of Profile .04 Taper Series 29 rotary nickel-titanium instruments in simulated root canals. Part 1. Int Endod J 1997; 30: 1-7.
• 43. Gergi R, Sabbagh C. Effectiveness of two nickel-titanium rotary instruments and a hand file for removing gutta-percha in severely curved root canals during retreatment: an ex vivo study. Int Endod J 2007; 40: 532-7.
• 44.Takahashi CM, Cunha RS, Martin AS, Fontana CE, Silveira CFM, Bueno CES. In vitro evaluation of the effectiveness of ProTaper Universal Rotary Retreatment System for gutta-percha removal with or without a solvent. J Endod 2009; 35: 1580-3.
• 45. Pirani C, Pelliccioni GA, Marchionni S, Montebugnoli L, Piana G, Prati C. Effectiveness of three different retreatment techniques in canals filled with compacted gutta-percha or Thermafil: A scanning electron microscope study. J Endod 2009; 35: 1433-40.
• 46. Masiero AV, Barletta FB. Effectiveness of different techniques for removing gutta-percha during retreatment. Int Endod J 2005; 38: 2-7.
• 47. Betti LV, Bramante CM. Quantec SC rotary instruments versus hand files for guttapercha removal in root canal retreatment. Int Endod J 2001; 34: 514-9.
• 48. Hülsmann M, Bluhm V. Efficacy, cleaninig ability and safety of different rotary NiTi instruments in root canal retreatment. Int Endod J 2004; 37: 468-76.
• 49. Bramante CM, Betti LV. Efficacy of Quantec rotary instruments for gutta-percha removal. Int Endod J 2000; 33: 463-7.