AH plus, Calcium hydroxide, Irrigation, Push-out bond strength
Citation Information :
Dewi A, Upara C, Sastraruji T, Leelapornpisid W. Evaluation of the Bond Strength of Epoxy Resin-based Sealer Following Different Calcium Hydroxide Paste Removal Methods in Oval-shaped Root Canal. J Contemp Dent Pract 2022; 23 (7):674-678.
Aim: The study aimed to investigate the bond strength of epoxy resin-based sealer following five different calcium hydroxide paste removal methods in oval-shaped root canals.
Materials and methods: Sixty single-rooted human mandibular premolars having an oval-shaped root canal as evidenced by radiographs were decoronated and instrumented to size 40/0.04, medicated with calcium hydroxide paste for 7 days, before being randomly assigned to the conventional needle irrigation (CNI), manual dynamic agitation (MDA), sonic irrigation (SI), passive ultrasonic irrigation (PUI), and XP-endo Finisher (XP) groups to be irrigated using different irrigation systems. All specimens were then obturated using an epoxy resin-based root canal sealer and warm vertical compaction obturation technique. After 7 days, each specimen was sectioned into 1 mm root slices at the coronal, middle, and apical third of the root canal and tested for the push-out bond strength using a universal testing machine.
Results: The XP group was the only group that had comparable bond strength to the control group at every level of the root canal following removal of calcium hydroxide medicament (p >0.05). The control group had higher bond strength than the CNI group at every level of the root canal (p < 0.05).
Conclusion: Calcium hydroxide interfered with the bonding of epoxy resin-based sealer to root canal walls. Irrigation with the XP increased the bonding sealer at every level of the root canal.
Clinical significance: The XP was efficacious as a final rinse agitation technique to promote the bonding of the epoxy resin-based sealer at every level of the root canal following calcium hydroxide medication.
Siqueira JF Jr, de Uzeda M. Disinfection by calcium hydroxide pastes of dentinal tubules infected with two obligate and one facultative anaerobic bacteria. J Endod 1996;22(12):674–676. DOI: 10.1016/S0099-2399(96)80062-8.
Hülsmann M, Peters OA, Dummer PMH. Mechanical preparation of root canals: Shaping goals, techniques and means. Endod Topics 2005;10(1):30–76. DOI: 10.1111/j.1601-1546.2005.00152.x.
Siqueira JF Jr, Rôças IN, Santos SRLD, et al. Efficacy of instrumentation techniques and irrigation regimens in reducing the bacterial population within root canals. J Endod 2002;28(3):181–184. DOI: 10.1097/00004770-200203000-00009.
Donnermeyer D, Wyrsch H, Bürklein S, et al. Removal of calcium hydroxide from artificial Grooves in straight root canals: Sonic activation using EDDY versus passive ultrasonic irrigation and XPendo Finisher. J Endod 2019;45(3):322–326. DOI: 10.1016/j.joen.2018.11.001.
Ma JZ, Shen Y, Al-Ashaw AJ, et al. Micro-computed tomography evaluation of the removal of calcium hydroxide medicament from C-shaped root canals of mandibular second molars. Int Endod J 2015;48(4):333–341. DOI: 10.1111/iej.12319.
Wang Y, Guo LY, Fang HZ, et al. An in vitro study on the efficacy of removing calcium hydroxide from curved root canal systems in root canal therapy. Int J Oral Sci 2017;9(2):110–116. DOI: 10.1038/ijos. 2017.14.
de Oliveira RL, Guerisoli DMZ, Duque JA, et al. Computed microtomography evaluation of calcium hydroxide-based root canal dressing removal from oval root canals by different methods of irrigation. Microsc Res Tech 2019;82(3):232–237. DOI: 10.1002/jemt. 23164.
Barbizam JV, Trope M, Teixeira EC, et al. Effect of calcium hydroxide intracanal dressing on the bond strength of a resin-based endodontic sealer. Braz Dent J 2008;19(3):224–227. DOI: 10.1590/s0103-64402008000300009.
Kim SK, Kim YO. Influence of calcium hydroxide intracanal medication on apical seal. Int Endod J 2002;35(7):623–628. DOI: 10.1046/j.1365-2591.2002.00539.x.
Guiotti FA, Kuga MC, Duarte MAH, et al. Effect of calcium hydroxide dressing on push-out bond strength of endodontic sealers to root canal dentin. Braz Oral Res 2014;28. DOI: 10.1590/S1806-83242014. 50000002.
Rödig T, Vogel S, Zapf A, et al. Efficacy of different irrigants in the removal of calcium hydroxide from root canals. Int Endod J 2010; 43(6):519–527. DOI: 10.1111/j.1365-2591.2010.01709.x.
Kirar DS, Jain P, Patni P. Comparison of different irrigation and agitation methods for the removal of two types of calcium hydroxide medicaments from the root canal wall: An in-vitro study. Clujul Med 2017;90(3):327–332. DOI: 10.15386/cjmed-737.
Pabel AK, Hülsmann M. Comparison of different techniques for removal of calcium hydroxide from straight root canals: An in vitro study. Odontology 2017;105(4):453–459. DOI: 10.1007/s10266-017-0293-6.
Yaylali IE, Kececi AD, Ureyen Kaya B. Ultrasonically activated irrigation to remove calcium hydroxide from apical third of human root canal system: A systematic review of in vitro studies. J Endod 2015;41(10):1589–1599. DOI: 10.1016/j.joen.2015.06.006.
Wigler R, Dvir R, Weisman A, et al. Efficacy of XP-endo finisher files in the removal of calcium hydroxide paste from artificial standardized grooves in the apical third of oval root canals. Int Endod J 2017; 50(7):700–705. DOI: 10.1111/iej.12668.
Hamdan R, Michetti J, Pinchon D, et al. The XP-Endo Finisher for the removal of calcium hydroxide paste from root canals and from the apical third. J Clin Exp Dent 2017;9(7):e855–e860. DOI: 10.4317/jced.53962.
Kfir A, Blau-Venezia N, Goldberger T, et al. Efficacy of self-adjusting file, XP-endo finisher and passive ultrasonic irrigation on the removal of calcium hydroxide paste from an artificial standardized groove. Aust Endod J 2018;44(1):26–31. DOI: 10.1111/aej.12204.
Wu MK, R'oris A, Barkis D, et al. Prevalence and extent of long oval canals in the apical third. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2000;89(6):739–743. DOI: 10.1067/moe.2000.106344.
Coniglio I, Magni E, Cantoro A, et al. Push-out bond strength of circular and oval-shaped fiber posts. Clin Oral Investig 2011;15(5):667–672. DOI: 10.1007/s00784-010-0448-0.
Uzunoglu-Özyürek E, Erdoan Ö, Aktemur Türker S. Effect of calcium hydroxide dressing on the dentinal tubule penetration of 2 different root canal sealers: A confocal laser scanning microscopic study. J Endod 2018;44(6):1018–1023. DOI: 10.1016/j.joen.2018.02.016.
Neelakantan P, Sharma S, Shemesh H, et al. Influence of irrigation sequence on the adhesion of root canal sealers to dentin: A fourier transform infrared spectroscopy and push-out bond strength analysis. J Endod 2015;41(7):1108–1011. DOI: 10.1016/j.joen.2015. 02.001.
Jiang L-M, Lak B, Eijsvogels LM, et al. Comparison of the cleaning efficacy of different final irrigation techniques. J Endod 2012;38(6):838–841. DOI: 10.1016/j.joen.2012.03.002.
Bronnec F, Bouillaguet S, Machtou P. Ex vivo assessment of irrigant penetration and renewal during the final irrigation regimen. Int Endod J 2010;43(8):663–672. DOI: 10.1111/j.1365-2591.2010.01723.x.
Blank-Gonçalves LM, Nabeshima CK, Martins GHR, et al. Qualitative analysis of the removal of the smear layer in the apical third of curved roots: Conventional irrigation versus activation systems. J Endod 2011;37(9):1268–1271. DOI: 10.1016/j.joen.2011.06.009.
Alturaiki S, Lamphon H, Edrees H, et al. Efficacy of 3 different irrigation systems on removal of calcium hydroxide from the root canal: A scanning electron microscopic study. J Endod 2015;41(1):97–101. DOI: 10.1016/j.joen.2014.07.033.
Leoni GB, Versiani MA, Silva-Sousa YT, et al. Ex vivo evaluation of four final irrigation protocols on the removal of hard-tissue debris from the mesial root canal system of mandibular first molars. Int Endod J 2017;50(4):398–406. DOI: 10.1111/iej.12630.
Denna J, Shafie LA, Alsofi L, et al. Efficacy of the rotary instrument XP-Endo Finisher in the removal of calcium hydroxide intracanal medicament in combination with different irrigation techniques: A microtomographic study. Materials (Basel) 2020;13(10):2222. DOI: 10.3390/ma13102222.
Prado M, Simão RA, Gomes BP. Effect of different irrigation protocols on resin sealer bond strength to dentin. J Endod 2013;39(5):689–692. DOI: 10.1016/j.joen.2012.12.009.