Evaluation of position of maxillary impacted canine and its effect on adjacent teeth - A correlation study between panoramic radiography and cone beam computed tomography

Abstract

Aims and Objective: The present study was undertaken to evaluate the usefulness of panoramic radiograph in determining labiopalatal position of MIPC and its effect on permanent teeth by assessing the mesiodistal position of MIPC on panoramic radiograph and by correlating it with 3D position on CBCT. Methods: The designed study was a cross-sectional study enrolling total 60 patients of either sex with 76 impacted maxillary canines. Patients were divided into 2 groups based on age criteria i.e age groups: ?15 years and >15 years. Evaluation of MIPC in both groups was done by digital panoramic radiograph and subjects were subjected to CBCT imaging for exact localization of MIPC and detection of root resorption of permanent incisors. The sector location on panoramic radiographs was compared with the labiopalatal position of impacted maxillary canines on CBCT. The statistical correlation between panoramic and CBCT findings was examined using the Pearsons Chi-square test. Results: Most of the positions of MIPC were labial (35%), followed by palatal (34%) and mid-alveolus (30%). Labial MIPC on CBCT were more frequent in sectors 1, 2 and 3 and palatal MIPC were more frequent in sector 4 and 5 on panoramic radiographs. Distribution of mid-alveolus canines showed great variation with most of them located in sector 1 and 5. Root resorption of permanent incisors (28.94%) was observed in sectors 3, 4 and 5. Conclusions: The present study recommended that labiopalatal position of MIPC and resorption of permanent incisors might be predicted using sector location on panoramic radiography.