Farhana Afzal, Hasan Ali Raza, Summiya Basir, Sana Afzal, Ghulam Rasool.
Patterns of third-molar agenesis in an orthodontic patient population with different skeletal malocclusions.
Pak Oral Dental J Jan ;35(4):623-7.

Current study was performed to examine the relationship between third molar agenesis and different skeletal malocclusion patterns. Pretreatment records of 477 orthodontic patients (aged 13-17 years) were used. Third molar agenesis was calculated with respect to gender, number of missing teeth, jaws and skeletal malocclusion patterns. The Pearson Chi-Square test was performed to determine potential differences. Among the 477 subjects, 127 subjects were diagnosed with third molar agenesis (26.6%) with no statistical gender difference (P > .05). It was more common in the maxilla than in the mandible or in both jaws ( P > .05). The prevalence of third molar agenesis in those with a class III malocclusion was higher than in those with Class I or Class II ( P > .05). These results suggest that agenesis of the third molar depends on sagittal skeletal malocclusions in this region.

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