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Year : 2015  |  Volume : 3  |  Issue : 3  |  Page : 175-180

Overjet as a predictor of vertical facial morphology in orthodontic patients with class II division 1 malocclusion

Department of Surgery, Section of Dentistry, The Aga Khan University Hospital, Karachi 74800, Pakistan

Correspondence Address:
Nita Kumari Bhateja
Department of Surgery, Section of Dentistry, The Aga Khan University Hospital, P.O. Box 3500, Stadium Road, Karachi 74800
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/2321-3825.158137

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Objective: To evaluate the vertical facial morphology in untreated orthodontic patients with Class II division 1 malocclusion. Materials and Methods: The sample comprised of 113 patients (61 females and 52 males) between 8 and 13 years of age, having Class II malocclusion with overjet of >4 mm, no prior history of orthodontic treatment, no craniofacial anomalies and no missing first permanent molars. Skeletal parameters were assessed using pretreatment lateral cephalograms of these patients. Overjet was measured on the study casts, using digital vernier caliper. Descriptive statistics was calculated for age and different vertical facial cephalometric angles. Pearson's correlation was used to correlate various parameters. One-way analysis of variance was used for comparison of means of vertical facial cephalometric angles among three overjet groups (Group I = 5-7 mm, Group II =8-10 mm, Group III = >10 mm). Results: The means of all vertical facial cephalometric parameters were in the normal range representing average facial pattern in patients with Class II division 1 malocclusion, except Jarabak ratio which indicated a tendency toward long facial pattern. No statistically significant correlation was found between overjet and parameters of vertical facial morphology. Frankfort mandibular plane angle was found to have a moderately significant positive correlation with Steiner's mandibular plane angle (r = 0.789**) and Y-axis (r = 0.604**). Conclusion: Patients with Class II division 1 malocclusion have an average vertical growth pattern, Overjet value is not a predictor of vertical facial morphology, There is no significant correlation between overjet and parameters used to assess vertical facial morphology.

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