Secondary protective seal of root canal fillings performed under simulated clinical conditions
Journal Title: RSBO - Year 2011, Vol 8, Issue 3
Abstract
Objective: This study evaluated sealing properties of root canal fillings with an additional composite barrier. The null hypothesis tested was that different sealers and different methods of sealer removal did not influence microleakage. Material and methods: Eighty extracted human molars with fully mature apices had root canal prepared to size 60 taper .02 and divided into eight groups: three experimental groups for each sealer and negative/positive control (n = 10 each). Teeth of experimental groups were mounted into the molar region of a training puppet to simulate clinical conditions. Root canals were filled with AH Plus or GuttaFlow and gutta-percha. Excess sealer was removed with: ethanol-moistened foam pellet only, additional preparation with a water-cooled diamond bur or additional etch-and-rinse procedure (37% phosphoric acid gel). All procedures were carried out until clean as judged by the naked eye. In all groups except the positive control Syntac was applied to the access cavity. Tetric flow was applied in two increments of 1 mm each. A dye penetration test was carried out by centrifugation for 3 min at 30 G within 5% methylene blue dye. Statistical evaluation was carried out with PASW 18.0 (α = 0.05). Results: Although the two sealers had different chemical composition, sealer exhibited no influence on the results, whereas technique of sealer removal did (Two-way-ANOVA, p < 0.001). Groups with “foam pellet” or “bur preparation” showed significantly more leakage than groups with “etch-and rinse” (SNK, p < 0.05). Conclusion: Applying an etch-and-rinse procedure prior to Syntac may be beneficial for the adhesive seal over root canal fillings.
Authors and Affiliations
Johannes Ebert, Roland Frankenberger, Anselm Petschelt, Matthias Roggendorf
Keywords
Related Articles
- EP ID EP119206
- DOI -
- Views 183
- Downloads 0
Analysis of accidents and complications in surgical removal of impacted mandibular third molars occurred in Curitiba/PR
The dental retention, mainly of the third molar ones, is presented as a problem of relevant frequency that reaches individuals of all the social classes. In statistical terms, the highest volume of these inclusions is fo...
Evaluation of the endodontic treatment influence on the bond strength of fiber posts reinforced by a restorative composite
Introduction and objective: Fiber posts are widely used to increase the mechanical strength of the restorations. The aim of this study was to evaluate the bond strength of fiber posts reinforced by a restorative composit...
Educação em saúde bucal: análise do conhecimento entre professores do ensino fundamental em uma cidade no Vale do Itapocu região (SC)
Introduction: The school has been considered an appropriate place for the development of health programs. The possibility of introducing actions of this type was the driving force behind this study. Objective: To evaluat...
Comparative analysis of two electronic apex locators in working length determination at endodontic therapy: an in vitro study
Introduction: Endodontic treatment comprises individual steps that should be effectively performed in order to achieve therapeutic success. Among these steps is the determination of the real tooth length, which prevents...
Lack of pulp sensitivity in maxillary canines submitted to orthodontic traction: a retrospective clinical study
Introduction: Orthodontic movement may cause a great number of tissue alterations in the dental pulp. However, these changes may not be entirely recognized owing to the difficulty in simulating clinical situations....