Abstract
This study evaluates the relationship of acute pericoronitis to the position of the mandibular third molar in Nigerians. One hundred and thirty-two cases of acute pericoronitis seen over a period of 6 months at the state Dental Centre, Kaduna were studied. The tooth with the highest risk for acute pericoronitis was found to be vertically positioned third molar (57.4%); followed respectively by distoangular (25.9%) and mesioangular (14.8%) impactions. The height of such a tooth in relation to the second molar was found to correlate with deep pocket distal to the tooth (P< 0.05). The observation in this study showed that most of the teeth of the vertically impacted group were either at the same occlusal level or slightly above. A change in the classification of vertical impaction into \'false\' and \'true\' vertical impactions is suggested. Keywords: Acute-pericoronitis, impaction-position, frequency Journal of Medicine and Biomedical Research Vol. 5 (1&2) 2007: pp. 41-46
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