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INTERNATIONAL JOURNAL OF PHARMACEUTICAL RESEARCH

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Published by : Advanced Scientific Research
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0975-2366
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IJPR 9[3] July - September 2017 Special Issue

July - September 9[3] 2017

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Evaluation Of Impacted Maxillary Third Molars Using Orthopantomograph And Cbct - A Retrospective Study

Author: R RAJASHRI, M P SANTHOSH KUMAR
Abstract: Removal of the impacted maxillary third molar is not without complications. One possible complication is oroantral perforation which can result in sinus infection, if not properly managed. This aim of this study is to examine the prevalence of maxillary third molar impaction in its various types, its association with maxillary sinus proximity, and its correlation to post extraction oroantral perforation using orthopantomograph (OPG) and Cone beam computed tomography (CBCT) in the south indian population. In this retrospective study a total 870 maxillary third molars, which includes 450 right and 420 left maxillary third molars were examined using orthopantomography images and CBCT obtained from 540 patients. Data including the age, gender, the angulation type, depth of the third molars, and horizontal and vertical positions of the maxillary sinus relative to the third molars were examined and recorded. Data was statistically analyzed using SPSS version 20.0 and results obtained. Among 540 patients, 222 (41.2%) were males and 318 (58.8%) were females. The most common angulation of impaction was vertical (72.1%). Based on the depth of the third molars in relation to the adjacent second molar, Class A was the most common. Assessing the relationships of the third molars with the maxillary sinus, vertical Type I (39.3%) and horizontal Type II (60.7%) were seen most frequently. There was a statistically significant difference between the vertical and horizontal relationships (P < 0.05). Knowledge of the anatomical relationship between the maxillary sinus floor and maxillary third molar roots is important for removing a maxillary third molar to prevent untoward complications like oroantral perforation. Cone beam computed tomography evaluation could be more valuable than OPG in assessing the relations of impacted maxillary third molars to the surrounding vital structures when performing dental procedures involving the maxillary third molars.
Keyword: Cone-beam computed tomography, maxillary sinus, maxillary third molar, sinus perforation, Orthopantomograph, Impacted teeth
DOI: https://doi.org/10.31838/ijpr/2020.12.02.343
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