Comparison of root canal filling removal of different types of endodontic sealers
Comparação da desobturação de dentes obturados com diferentes tipos de cimentos endodônticos
Almeida, Juliana Silva; Nabeshima, Cleber Keiti; Cavatoni, Mariana; Britto, Maria Leticia Borges
Rev. odontol. UNESP, vol.40, n5, p.236-240, 2011
Abstract
The aim of this study was evaluate the difference of root canal filling removal of 4 endodontic sealers (Acroseal, AH Plus, Endomethasone e Endo Rez). It were used 20 upper molars shaped by Gates Glidden 1, 2 and 3, and ProTaper rotary system, then filled by lateral condensation technique using different sealers: Acroseal, AH Plus, Endomethasone e Endo Rez. After 7 days of incubation at 37°, the root canal filling removal was performed using K-file and Hedströen associated to Gates Glidden. The time to reach the working length was recorded using a stopwatch. The data were submitted to ANOVA and Tukey tests, and the comparison between root canals type was done by Krukal-Wallis test. The results showed significant difference just between AH Plus and Endo REZ sealers (p = 0.0167), the root canal type had not influence on the root canal filling removal. It can conclude that epoxy resin-based sealer demonstrate difficulty in removing root canal filling material, and methacrylate resin-based, zinc oxide eugenol, and calcium hydroxide sealers show similarity.
Keywords
Retreatment, endodontics, cement resin cements, zinc oxide-eugenol
Resumo
O objetivo deste estudo foi avaliar a diferença da desobturação de quatro tipos de cimento (Acroseal, AH Plus, Endomethasone e Endo Rez). Foram utilizados 20 molares superiores, nos quais os terços cervical e médio foram preparados com brocas Gates Glidden 1, 2 e 3, os canais instrumentados com sistema ProTaper e obturados por condensação lateral, utilizando-se diferentes cimentos: Acroseal, AH Plus, Endomethasone e Endo Rez. Após sete dias mantidos em estufa a 37 °C, os dentes foram desobturados com limas K e Hedströen, associadas a Gates Glidden. O tempo até chegar ao limite de trabalho foi marcado com um cronômetro digital. Os dados foram submetidos aos testes de ANOVA e Tukey, e a comparação entre os tipos de raízes foi obtida pelo teste de Krukal-Wallis. Os resultados mostraram diferença significante somente entre o AH Plus e o Endo REZ (p = 0,0167), sendo que o tipo de raiz não influenciou nos resultados obtidos em nenhum dos grupos. Pode-se concluir que o cimento obturador à base de resina epóxia dificulta a desobturação do canal radicular e os cimentos à base de resina uretano dimetacrilato, óxido de zinco e eugenol, e hidróxido de cálcio apresentam similaridade.
Palavras-chave
Retratamento, Endodontia, cimentos de resina, cimento de óxido de zinco e eugenol.
References
1. Duarte MAH, Weckwerth PH, Moraes, IG Análise da ação antimicrobiana de cimentos e pastas empregados na prática endodôntica. Rev Odontol Univ São Paulo. 1997;11:299-305.
2. Alonso FS, Gomes CC, Freitas LF, Gomes IC, Pinto SS, Penina P. Análise comparativa do escoamento de dois cimentos endodônticos: Endofill e AHPlus. UFES Rev Odontol. 2005;7(1):48-54.
3. Poggio C, Arciola CR, Dagna A, Colombo M, Bianchi S, Visai L. Solubility of root canal sealers: a comparative study. Int J Artif Organs. 2010;33:676-81. PMid:20963731.
4. Aznar FDC, Bueno CES, Nishiyama CK, Martin AA. Radiopacidade de sete cimentos endodônticos avaliada através da radiografia digital. RGO. 2010;58;181-4.
5. Dultra F, Barroso JM, Carrasco LD, Capelli A, Guerisoli DMZ, Pécora DJ. Evaluation of apical microleakage of teeth sealed with four different root canal sealers. J Appl Oral Sci. 2006;14:341-5. PMid:19089055. http://dx.doi.org/10.1590/S1678-77572006000500008
6. Soares I, Goldberg F, Massone EJ, Soares IM. Periapical tissue response to two calcium hydroxide containing endodontic sealers. J Endod. 1990;16:166-9. PMid:2074406. http://dx.doi.org/10.1016/S0099-2399(06)81964-3
7. Okino Neto K, Moura AAM, Davidowicz H. Estudo comparativo da reação tecidual conjuntiva de ratos, frente a três cimentos endodônticos resinosos. J Health Sci Inst. 2010;28(1):67-70.
8. 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. PMid:17511787. http://dx.doi.org/10.1111/j.1365- 2591.2007.01254.x
9. 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 endodontic retreatment. Int Endod J. 2000;33:361-6. PMid:11307212. http://dx.doi.org/10.1046/j.1365- 2591.2000.00320.x
10. Masiero AV; Barletta FB. Effectiveness of different techniques for removing gutta-percha during retreatment. Int Endod J. 2005,38:2-7. PMid:15606816. http://dx.doi.org/10.1111/j.1365-2591.2004.00878.x
11. 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. PMid:16776756. http://dx.doi.org/10.1111/j.1365-2591.2006.01100.x
12. Só MVR, Saran C, Magro ML, Vier-Pelisser FV, Munhoz M. Efficacy of ProTaper retreatment system in root canals filled with guttapercha and two endodontic sealers. J Endod. 2008;34:1223-5. PMid:18793925. http://dx.doi.org/10.1016/j.joen.2008.07.020
13. Ünal GÇ, Üreyen Kaya B, Taç AG, Keçeci AD. A comparison of the efficacy of conventional and new retreatment intruments to remove gutta-percha in curved root canals: an ex vivo study. Int Endod J. 2009;42:344-50. PMid:19220515. http://dx.doi.org/10.1111/j.1365- 2591.2008.01518.x
14. Tanomaru MF, Leonardo MR, Silva LAB, Castro ET. Avaliação radiográfica in vitro da capacidade de limpeza de técnicas de retratamento endodôntico. Rev Assoc Paul Cir Dent. 1999;53:238-241.
15. Bueno CES, Valdrighi L, Souza Filho FJ. Influencia in vitro de cimentos endodônticos sobre a efetividade e extrusão apical na desobturação de canais radiculares. Rev Bras Odontol. 2001;58:296-9.
16. Machado MEL, Sapia LAB, Cai S, Martins GHR, Nabeshima CK. Comparison of two rotary systems in root canal preparation regarding disinfection. J Endod. 2010; 36: 1238-40. PMid:20630307. http://dx.doi.org/10.1016/j.joen.2010.03.012
17. Mamootil K, Messer HH. Penetration of dentinal tubules by endodontic sealer cements in extracted teeth and in vivo. Int Endod J. 2007;40:873-81. PMid:17764458. http://dx.doi.org/10.1111/j.1365-2591.2007.01307.x
18. Cunha RS, De Martin AS, Barros PP, Silva FM, Jacinto RC, Bueno CES. 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. PMid:18037051. http://dx.doi.org/10.1016/j.joen.2007.07.004
19. Uezu MKN, Britto MLB, Nabeshima CK, Pallotta RC. Comparison of debris extruded apically and working time used by Protaper Universal rotary and ProTaper retreatment system during gutta percha removal. J Appl Oral Sci. 2010;18:542-5. PMid:21308282. http://dx.doi.org/10.1590/S1678-77572010000600002
20. Uezu MKN, Nabeshima CK, Britto MLB. Comparação do remanescente de material obturador nos diferentes terços do canal radicular após uso dos desobturadores ProTaper. Rev Odontol UNESP. 2010;39:332-5.
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