Prevalence and Pattern of Third Molar Impaction A retrospective study of radiographs in Oman
Journal Title: Sultan Qaboos University Medical Journal - Year 2014, Vol 14, Issue 3
Abstract
Objectives: Te 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: Te 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. Results: Of the study population, 543 (54.3%) OPGs showed at least one impacted third molar. Te total number of impacted molars was 1,128. Te most common number of impacted third molars was two (41%). Te most common angulation of impaction in the mandible was the mesioangular (35%) and the most common level of impaction in the mandible was level A. Of the 388 bilateral occurrences of impacted third molars, 377 were in the mandible. Tere was no signifcant difference in the frequency of impaction between the right and left sides of both jaws. Pathological conditions associated with impacted lower third molars were found in 18%, of which 14% were associated with a radiographic radiolucency of more than 2.5 mm, and 4% of impacted lower third molars were associated with dental caries. Conclusion: Tis study found that more than half of Omani adult patients ranging in age from 19‒26 years had at least one impacted third molar.
Authors and Affiliations
Samira M. Al-Anqudi| Department of Oral Health, Sultan Qaboos University Hospital, Muscat, Oman, Salim Al-Sudairy| Department of Oral Health, Sultan Qaboos University Hospital, Muscat, Oman, Ahmed Al-Hosni| Data Management Department, Petroleum Development Oman, Abdullah Al-Maniri| Te Research Council, Muscat, Oman
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