Study of mandibular anterior alveolar bone thickness in subjects with different facial skeletal types / 华西口腔医学杂志

ABSTRACT

<p><b>OBJECTIVE</b>To study the association of vertical facial skeletal types and sagittal facial skeletal types with anterior alveolar bone thickness.</p><p><b>METHODS</b>Among 168 cases with malocclusion in early permanent dentition stage, 93 patients were male and 75 patients were female. All patients (aged 10-14 years) were divided into 9 groups by different facial skeletal types, mandibular anterior alveolar bone thickness in patients' lateral cephalometric films were measured. ANOVA were performed to measurement results with the SPSS 13.0 statistical software.</p><p><b>RESULTS</b>Though sagittal facial skeletal types were the same, there were significant differences between different vertical facial types groups. The order was low-angle group, average-angle group and high-angle group according to the size. A high-angle individual often had a thin anterior alveolar bone while a low-angle individual often had the opposite morphology character. There was no statistical significance between skeletal type I, II and III. But group of skeletal type III also had a thin alveolar bone thickness which had no significant difference with high-angle group. Low-angle group III had no significant difference with average-angle group I and II in alveolar bone thickness.</p><p><b>CONCLUSION</b>Sagittal facial skeletal types have little influence on anterior alveolar morphology, but the vertical facial skeletal types have strong connection with anterior alveolar bone thickness.</p>