The efficacy of different cleaning protocols for the sealer-contaminated access cavity
- PDF / 1,247,604 Bytes
- 7 Pages / 595.276 x 790.866 pts Page_size
- 70 Downloads / 179 Views
ORIGINAL ARTICLE
The efficacy of different cleaning protocols for the sealer-contaminated access cavity Stéphanie Devroey 1 & Filip Calberson 1 & Maarten Meire 1 Received: 2 December 2019 / Accepted: 8 April 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Objectives Sealer remnants in the access cavity may negatively affect coronal seal and cause tooth discoloration. This study sought to evaluate the efficacy of different cleaning protocols for the sealer-contaminated access cavity. Materials and methods Sixty extracted human molars were accessed, chemomechanically prepared and warm vertically obturated with gutta-percha and epoxy resin sealer. Teeth were randomly assigned to one control (air/water spray) and five test groups (n = 10): scrubbing with an ethanol-saturated cotton pellet (CP), scrubbing with an ethanol-saturated microbrush (MB), air polishing (ProphyFlex, KaVo), MB + air polishing and cleaning with a round bur. Each tooth was split sagittally, and the sealer-covered access cavity area (SCA) before and after cleaning was determined using image analysis software and compared pre- and post-operatively and across groups using paired samples t test and one-way ANOVA. Results The SCA was significantly reduced in all test groups (P < 0.05), but not in the control group (P > 0.05). Highest epoxy resin sealer reductions were observed for MB (92%) and MB + air polishing (94%), yielding a significantly better SCA reduction than that of ethanol-saturated cotton pellet (58%), bur cleaning (69%) or air polishing alone (64%). Conclusions All cleaning protocols except air/water spray reduced the amount of epoxy resin sealer in the access cavity, but none of them completely removed the sealer. Cleaning with the ethanol-saturated microbrush, with or without air polishing, performed better than the other methods. Clinical relevance Scrubbing with an ethanol-saturated microbrush, with or without air polishing, was the most efficient method for cleaning the epoxy resin sealer-contaminated molar access cavity. Keywords Sealer removal . Dentin . Access cavity . Pulp chamber cleaning . Epoxy-resin sealer
Introduction The objective of the root canal filling is to prevent the passage of fluid and/or microorganisms along the root canal, either apically or coronally, providing a barrier to canal infection or reinfection, and to entomb residual microorganisms and irritants by sealing them within the root canal system [1]. A root canal filling is usually a combination of a (semi-)solid core material and a cement-like root canal sealer. The sealer fills residual spaces between the solid material and the canal walls [2] and ensures bonding to dentine [3]. Irrespective of the obturation technique, contamination of the access cavity * Maarten Meire [email protected] 1
Department of Oral Health Sciences, Section of Endodontology, Ghent University, C. Heymanslaan 10/P8, B, 9000 Ghent, Belgium
walls by endodontic sealer is inevitable during the root canal filling procedure. Sealer remnants in the pulp
Data Loading...
