Comparative cephalometric study of dentofacial patterns of individuals with normal occlusion and Angle malocclusions

Julio César Mota PEREIRA, Henrique Manoel LEDERMAN, Hélio Kiitiro YAMASHITA, Dayliz Quinto PEREIRA, Luís Antônio de Arruda AIDAR

Objective: To evaluate dentofacial patterns of patients with normal occlusion and Angle malocclusions, examining potential differences between specific cephalometric measures as they relate to gender, both intra- and intergroup. Methods: The sample consisted of 200 lateral cephalometric radiographs obtained from young Brazilians of both genders, aged between 11 years and 2 months and 19 years and 10 months, with permanent dentition. The material was divided according to the type of occlusion into five groups: One group consisted of patients with normal occlusion and four groups of patients with Angle malocclusions, and each group was also divided by gender. Angular and linear cephalometric measures were evaluated. Results: Genders did not differ in most measures. Position of the maxilla showed no significant differences between groups. Mandibular retrognathia was remarkable in groups with Class II, Divisions 1 and 2. Vertical imbalances were observed with some significant differences. The pattern was found to be hypodivergent for groups with normal occlusion and Class II, Division 2, and neutral for groups with Class I; Class II, Division 1 and Class III. Dentoalveolar compensation was evident in groups with Class III and Class II, Division 2. Finally, the normal occlusion group profile was more convex than the patterns found in the US population. Conclusions: In general, some features of facial morphology were associated with certain types of malocclusion. However, individual assessment of each face is still necessary as some of the features are shared across different types of occlusion.

Keywords: Cephalometry. Malocclusion. Growth.

How to cite: Pereira JCM, Lederman HM, Yamashita HK, Pereira DQ, Aidar LAA. Estudo comparativo cefalométrico dos padrões dentofaciais de indivíduos portadores de oclusão normal e de más oclusões de Angle. Dental Press J Orthod. 2011 Sept-Oct;16(5):62-73.

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