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Prevalence and Pattern of Impacted Mandibular Third Molar: An Institution-based Retrospective Study
Sundarrajan KalaiSelvan1, Sappaniapillai Kathiresan Nithya Ganesh1, Pughalaendhi Natesh1
1Department of Oral and Maxillofacial Surgery, CSI College of Dental Sciences and Research, Madurai, Tamil Nadu, India.
Journal of Pharmacy & Bioallied Sciences
|November 5, 2020
Summary
Mandibular third molar impaction is common in Madurai's Tamil population. Mesioangular impaction (60%) was most frequent, with Level A (71%) and Class II (50%) positions observed, often without inferior alveolar nerve involvement.
Area of Science:
- Dentistry
- Oral Surgery
- Radiology
Background:
- Third molar impaction is a frequent dental issue, affecting 18-32% of individuals.
- Patterns of impaction vary significantly across different ethnic groups.
- Limited research exists on mandibular third molar impaction within the Tamil population.
Purpose of the Study:
- To determine the prevalence and patterns of mandibular third molar impaction.
- To analyze impaction characteristics in the Madurai population.
Main Methods:
- A retrospective cohort study analyzed 1000 orthopantomograms (OPGs) from Madurai residents aged 20-40.
- Data collected included impaction angle, level, position, and proximity to the inferior alveolar nerve.
- Prevalence of dental caries in adjacent molars was also assessed.
Main Results:
- The most common impaction angle was mesioangular (60%), with Level A (71%) and Class II (50%) positions.
- Inferior alveolar nerve involvement was noted in 33% of cases.
- Dental caries affected 20% of second and/or third molars.
Conclusions:
- Mandibular third molar impaction is a prevalent developmental condition.
- Understanding impaction patterns is crucial for effective patient management and preventing complications.
- Further research is needed to address the lacunae in literature regarding the Tamil population.
