Journal of endodontics · 2025
Retreatment of Bioceramic Sealers Using a Novel Solvent: Dissolution, Patency, and Dentinal Effects.
СтатьяСравнительное исследованиеНазвание и аннотация: Перевод в очереди
Обработка статьи · этапы, ошибки и управление
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Hanson Jemma, Wu Michelle, Shakya Ajay, Walsh Ryan, Jalali Poorya
Аннотация
INTRODUCTION: This study evaluated the effectiveness of Endo Sealer Solvent (ESS), 5.25% sodium hypochlorite (NaOCl), 17% ethylenediaminetetraacetic acid (EDTA), and chloroform (CHCl3) in facilitating patency in canals obturated with bioceramic sealer and assessed their effects on dentin.
METHODS: The study had 3 parts. First, 60 disk-shaped specimens of EndoSequence BC Sealer (BC) were immersed in one of the 4 irrigants for 3 hours and percent weight loss was calculated. Second, 60 single-canal teeth were obturated with 3 mm of BC in the apical third; after 1 week, gutta-percha was removed and the time required to regain apical patency with a 10 C-file using the respective solvent was measured. Third, 8 additional teeth were irrigated with the solutions and evaluated under scanning electron microscopy for dentinal changes. Kruskal-Wallis and Mann-Whitney tests were used for analysis.
RESULTS: ESS and EDTA dissolved the greatest amount of BC, with no significant difference between them (P > .05), but both were significantly more effective than NaOCL and CHCl3 (P < .001). Regardless of the irrigant used, patency was achieved in all teeth with no significant difference in time (P > .05). Scanning electron microscopy showed no erosion in any group; ESS and EDTA removed the smear layer, while NaOCL and CHCl3 did not.
CONCLUSIONS: ESS and EDTA were the most effective in dissolving BC while preserving dentin, but all irrigants allowed 100% patency with no significant time difference, indicating solvent selection does not influence clinical patency outcomes.
METHODS: The study had 3 parts. First, 60 disk-shaped specimens of EndoSequence BC Sealer (BC) were immersed in one of the 4 irrigants for 3 hours and percent weight loss was calculated. Second, 60 single-canal teeth were obturated with 3 mm of BC in the apical third; after 1 week, gutta-percha was removed and the time required to regain apical patency with a 10 C-file using the respective solvent was measured. Third, 8 additional teeth were irrigated with the solutions and evaluated under scanning electron microscopy for dentinal changes. Kruskal-Wallis and Mann-Whitney tests were used for analysis.
RESULTS: ESS and EDTA dissolved the greatest amount of BC, with no significant difference between them (P > .05), but both were significantly more effective than NaOCL and CHCl3 (P < .001). Regardless of the irrigant used, patency was achieved in all teeth with no significant difference in time (P > .05). Scanning electron microscopy showed no erosion in any group; ESS and EDTA removed the smear layer, while NaOCL and CHCl3 did not.
CONCLUSIONS: ESS and EDTA were the most effective in dissolving BC while preserving dentin, but all irrigants allowed 100% patency with no significant time difference, indicating solvent selection does not influence clinical patency outcomes.