Analysis of Maxillary Bone Thickness at Incisor Area in Class II Division 1 Malocclusion

Abstract

Objectives: To determine and analyze the maxillary incisal jaw bone thickness among different vertical skeletal facial types of Class II Division 1 malocclusion. Materials and method: The samples (n=121) between 12-14 yrs of age were divided into three groups (low angle, average angle, high angle) based on their SN-MP angle. Linear measurements were processed and analyzed statistically. The characteristics of abnormal incisor jaw bone thickness at upper and lower incisors among three vertical facial skeletal types were studied in detail. Results: At the upper and lower central incisors low angle individuals presented greater dentoalveolar, basal bone thickness than high and average angle individuals. The distance from the root apex of upper and lower central incisors were far away from the lingual cortex in low angle than high angle individuals. Conclusion: Among different vertical facial types with Class II Division 1 malocclusion in early permanent dentition may accord to establish discriminate values as a sample to set up the cephalometric standard for the appropriate diagnosis to provide better treatment plan for the clinicians.