Citation Information :
Khurana N, Chourasia HR, Singh G, Mansoori K, Nigam AS, Jangra B. Effect of Drying Protocols on the Bond Strength of Bioceramic, MTA and Resin-based Sealer Obturated Teeth. Int J Clin Pediatr Dent 2019; 12 (1):33-36.
Aim: The aim of this study was to evaluate the bond strength and thereafter analyze the mode of failure of the three sealers applied to smear free radicular dentine with final drying using 70% isopropyl alcohol and paper points.
Materials and methods: A total of sixty root canals were prepared and then segregated into two groups (n = 30) as per the drying protocol, namely paper points or 70% isopropyl alcohol. Then, these roots were divided into three sub-groups (n = 10) with respective sealers and obturation materials, namely AH Plus and gutta-percha (AH/GP), EndoSequence BC and gutta-percha (EBC/GP), and MTA Fillapex and gutta-percha (MFP/GP). The roots were then sectioned from each third, and the push-out test was performed. Failure modes were examined under a stereomicroscope. Data were statistically analyzed by 2-way analysis of variance post hoc Tukey tests with a significant level of 5%.
Results: Overall canals dried with isopropyl alcohol showed higher bond strength values than paper point (p < 0.05). The AH/GP group showed lower bond strength than EBC/GP (p < 0.05) but higher than MFP/GP (p < 0.05). The most frequent type of failure was cohesive in the AH/GP group and adhesive in the EBC/GP group whereas MFP/GP had almost similar adhesive and cohesive failures.
Conclusion: Seventy percent isopropyl alcohol drying improved the bond strength of the root canal sealers with the dentinal tubules better than the ideal paper point drying.
Kuhre A, Kessler JR. Effect of moisture on the apical seal of laterally condensed gutta percha. J Endod 1993;19:277–280. DOI: 10.1016/S0099-2399(06)80456-5.
Goldman M, White RR, et al. A comparison of three methods of cleaning and shaping the root canal in vitro. J Endod 1988;14:7–12. DOI: 10.1016/S0099-2399(88)80235-8.
Dias KC, Soares CJ, et al. Influence of drying protocol with isopropyl alcohol on the bond strength of resin-based sealers to the root dentin. J Endod 2014;40:1454–1458. DOI: 10.1016/j.joen.2014.02.021.
Pommel L, About I, et al. Apical leakage of four endodontic sealers. J Endod 2003;29:208–210. DOI: 10.1097/00004770-200303000-00011.
Nagas E, Uyanik MO, et al. Dentin moisture conditions affect the adhesion of root canal sealers. J Endod 2012;38:240–244. DOI: 10.1016/j.joen.2011.09.027.
Ehsani M, Dehghani A, et al. Evaluation of apical micro-leakage of different endodontic sealers in the presence and absence of noisture. J Dent Res Dent Clin Dent Prospects 2014;8:125–129. DOI: 10.5681/joddd.2014.023.
Vitti RP, Prati C, et al. Physical properties of MTA Fillapex Sealer. J Endod 2013;39:915–918. DOI: 10.1016/j.joen.2013.04.015.
Ørstavik D. Materials used for root canal obturation: technical, biological and clinical testing. Endod Topics 2005;12:25–38. DOI: 10.1111/j.1601-1546.2005.00197.x.
Forough Reyhani M, Ghasemi N, et al. Push-Out Bond Strength of Dorifill, Epiphany and MTA-Fillapex Sealers to Root Canal Dentin with and without Smear Layer. Iran Endod J 2014;9:246–250.
Wang Z. Bioceramic materials in endodontics. Endo Topics 2015;32: 3–38. DOI: 10.1111/etp.12075.
Zmener O, Pameijer CH, et al. Significance of moist root canal dentin with the use of methacrylate-based endodontic sealers: an in vitro coronal dye leakage study. J Endod 2008;34:76–79. DOI: 10.1016/j.joen.2007.10.012.
Engel GT, Goodell GG, et al. Sealer penetration and apical microleakage in smear-free dentin after a final rinse with either 70% isopropyl alcohol or Peridex. J Endod 2005;31:620–623. DOI: 10.1097/01.don.0000152296.06840.14.
Stevens RW, Strother JM, et al. Leakage and sealer penetration in smear free dentin after a final rinse with 95% ethanol. J Endod 2006;32:785–788. DOI: 10.1016/j.joen.2006.02.027.
Gurgel-Filho ED, Leite FM, et al. Comparative evaluation of pushout bond strength of a MTA-based root canal sealer. Braz J. Oral Sci 2014;13:114–117