Micro CT pilot evaluation of removability of two endodontic sealers

Abstract

This study compared the removability of AH Plus and EndoSequence BC sealers using in vitro micro-computed tomography. Methods: Ten single-canal, extracted human teeth were cleaned and shaped with ProTaper NEXT rotary files to size X5 (50/0.06) (Dentsply-Sirona). Canals were obturated with a single cone gutta-percha and either AH Plus (Dentsply-Sirona) (Group A) or EndoSequence BC (Brasseler) (Group B). ProTaper Universal Retreatment files (Dentsply-Sirona) were used to remove obturation materials after 90 days at 37 o C/100% humidity. Each tooth was scanned using micro-computed tomography (SkyScan 1272; Bruker) at an isotropic resolution of 6 μm from which the percent of material removed was calculated. Two-sample t-tests and one-way ANOVA were used for analysis. Results: The percent removal of materials in the coronal third was 92.9% ± 7.3% (Group A) and 93.2% ± 6.1% (Group B). Removal in the middle third was 94.9% ± 8.5% (Group A) and 96.5% ± 6.1% (Group B). Apical third removal was 76.2% ± 27.9% (Group A) and 70.1% ± 30.8% (Group B). No statistically significant differences were determined between the two sealers or among the sectional thirds within each group (P > 0.05). Conclusion: AH Plus and EndoSequence BC sealers exhibit the same removability at all canal levels of 70% to 96%, with better removal coronally.

Bioceramic and Resin-Based Sealers Removal Using XP-Endo Finisher: A Scanning Electron Microscopy Study

“…20 Several studies had previously documented resembling removal of both AH Plus sealer and Endosequence BC sealer. [21][22][23] Simsek et al found that there was no difference among the sealers including AH Plus and iRoot SP in terms of retreatment effectivenes. 24 On the contrary, in previous studies, it was observed that there was a larger quantity of RFM when using Endosequence BC sealer in comparison to AH Plus.…”

“…These findings align with the results of the Colmenar et al study, which also indicated that AH Plus and Endosequence BC sealers exhibited similar removability at all levels within the root canal. 21 Uzunoglu et al compared the elimination of iRoot SP, AH Plus, and MTA Fillapex. The quantity of RFM in the middle and lower third was comparable and greater than in the coronal thirds.…”

Micro-Computed Tomography Analysis of Resin and Calcium Silicate Based Sealers Removal in Mandibular Molars Curved Canals

“…Initial root canal filling should be removed for the success of the retreatment procedure ( 22 ). The removal of a sealer is an important factor for endodontic retreatment because the sealer accounts for the greatest percentage of the remaining filling material on the canal surfaces after re-instrumentation ( 23 ).…”