Prevalence and Pattern of Third Molar Impaction: A retrospective study of radiographs in Oman.

Objectives: The aim of this retrospective study was to investigate the prevalence and pattern of third molar impaction in patients between 19-26 years old attending Sultan Qaboos University Hospital (SQUH) in Muscat, Oman.

Methods: The study reviewed 1,000 orthopantomograms (OPGs) of patients attending the Oral Health Department of SQUH between October 2010 and April 2011. Patients were evaluated to determine the prevalence of third molar impaction, angulation, level of eruption and associated pathological conditions.