期刊
AUSTRALIAN ENDODONTIC JOURNAL
卷 47, 期 1, 页码 5-10出版社
WILEY
DOI: 10.1111/aej.12446
关键词
endodontically treated teeth; endodontic cavity access; minimally invasive; fracture strength; lower molars
The type of access cavity preparation does not significantly affect the fracture strength of endodontically treated molars, with all teeth with endodontic access showing a higher incidence of fractures at the pulp chamber floor level even with restoration.
To assess whether access cavity design influences the fracture strength of endodontically treated and restored molars. Fifty human lower molars with standard crown dimensions were selected and assigned to the following groups: S - positive control (healthy tooth), ET - negative control (conventional endodontic access (CEA) and no restoration), NI - negative control (minimally invasive endodontic access (MEA) and no restoration), ETR (CEA + restoration with Bulkfill flow) and NIR (MEA + restoration with Bulkfill flow). The specimens were subjected to a compression test. The teeth were inspected for the site of fracture: either pulp floor or cusp. ANOVA, followed by Tukey's multiple comparison test (alpha = 5%), was used for statistical analysis. The type of access cavity preparation did not increase the fracture strength of endodontically treated teeth. Even with the restoration, all teeth with endodontic access performed had a higher incidence of fractures at the pulp chamber floor level.
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