Journal of Applied Oral Science
Print version ISSN 1678-7757
BODANEZI, Augusto et al. Influence of root canal sealer on the radiographic appearance of filling voids in maxillary single-rooted teeth. J. Appl. Oral Sci. [online]. 2012, vol.20, n.4, pp. 404-409. ISSN 1678-7757. http://dx.doi.org/10.1590/S1678-77572012000400003.
OBJECTIVE: This study compared the influence of three epoxy resin-based sealers with distinct radiopacities on the observers' ability to detect root canal filling voids during radiographic analysis. MATERIAL AND METHODS: The root canals of 48 extracted maxillary canines were prepared and divided into three groups. Each group was laterally condensed with one sealer (AH Plus®, Acroseal® or a non-radiopaque sealer), and a longitudinal void was simulated in half of the specimens from each group (n=8). Buccolingual radiographs were obtained and randomly interpreted for voids by a radiologist and an endodontist in a blinded fashion. Teeth were cut and inspected under a microscope to confirm the position of void. Differences in sensitivity and specificity between groups and examiners were compared using the Fisher's Exact and McNemar tests, respectively (α=0.05). RESULTS: Significantly lower sensitivity levels (p<0.05) were observed in the coronal portion of fillings performed with both radiopaque sealers. Specificity values for Acroseal® were significantly higher (p<0.05) in the coronal and apical portions of fillings. CONCLUSIONS: The type of root canal sealer can affect the observers' ability to detect root canal filling voids during radiographic analysis of upper single-rooted teeth.
Keywords : Epoxy resins; Radiography; Root canal filling materials; Root canal obturation; Sensitivity and specificity.