Eficácia dos cimentos endodônticos AH plus bioceramic e Bio C sealer na obturação de incisivos inferiores com diferentes anatomias

Abstract

The present study aimed to evaluate the quality of root canal obturation of mandibular incisors with oval and circular canals after the use of different bioceramic sealers (AH plus Bioceramic and Bio C sealer). Sixty mandibular incisors were selected, scanned in micro-CT (SkyScan 1173), and after initial selection, only forty teeth were selected and divided into two groups (n=20) according to anatomy: oval canals and circular canals. The teeth were accessed, instrumented with the VDW rotate rotary system (VDW, Wolfsburg, Germany) in the following order: 15/.04, 20/.05, 25/.06, 30/.04 and 35/.06 and subjected to new microCT scanning. The canals were then filled with different bioceramic cements (AH plus Bioceramic and Bio C sealer) (n = 10): incisors with oval canals filled with Bio C sealer, incisors with oval canals filled with AH Plus Bioceramic, incisors with circular canals filled with Bio C sealer and incisors with circular canals filled with AH Plus Bioceramic. In all groups, 5.25% sodium hypochlorite was used as an irrigant. The teeth were then subjected to micro-CT again to evaluate the quality of the filling and the percentages of empty spaces using the CTAN program. The data were subjected to statistical analysis using the two-way ANOVA and post hoc test (Tukey's test) (normal data) and the Kruskal Wallis test and post hoc test (Dunn's test) (non-normal data) (P < 0.05). It was observed that the obturation quality using the two bioceramic cements (AH Plus Bioceramic and Bio C sealer) was similar (P > 0.05). However, it was noted that, regardless of the type of cement used, the incisors that presented oval canals exhibited a higher percentage of empty spaces (4.28% and 2.65%) for the AH plus Bioceramic and Bio C sealer cements, respectively, when compared to the circular canals (P < 0.05). Therefore, it was verified that the obturation quality of the tested cements was similar; however, the anatomy of the canals influenced the obturation quality.