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A Comparison of Single-Cone Obturation Quality and Sealer Waste between Three Sealer Application Techniques
[Technical Report, Research Paper]
UNIFORMED SERVICES UNIV OF THE HEALTH SCIENCES BETHESDA MD
Pagination or Media Count:
Single-cone obturation with bioceramic sealers is increasingly widespread with multiple options for introducing sealer into the root canal system. The objective of this study was to evaluate three methods of sealer application in single-cone obturation with EndoSequence BC Sealer HiFlow by comparing obturation quality in the apical 6mm using micro-CT evaluation and the volume of sealer used by weight. Methods Three groups of ten extracted human teeth with single, straight canals were progressively cleaned and shaped to size 40.04 and irrigated with 6 NaOCl and 17 EDTA. Each group was obturated with a different sealer application method. The traditional method used a gutta-percha master cone to apply sealer to the canal walls. The Endosequence BC Tip delivery method involved injecting sealer directly into the coronal third of the canal. The Vista MST Visco-Tip method passively expressed sealer while withdrawing the tip from the apical third of the canal. The teeth and obturation materials of each group were weighed before and after obturation. Micro-CT evaluation of the groups quantified the percentage of voids within the obturations. Results Data were analyzed with Kruskal-Wallis and Dunns post hoc tests. The difference in voids between the three methods was not statistically significant p 0.05. Both the MST Visco-Tip method 0.041g and the traditional method 0.039g used significantly less sealer p 0.05 compared to the BC Tip method 0.166g.Within the limitations of this study, all three sealer application methods achieved similar obturation quality. The MST tip and the traditional method wasted less sealer than the BC Tip.
[A, Approved For Public Release]