Journal of AdvancedMedical and Dental Sciences Research

Aim: The aim of this study was to compare the changes in the alveolar bone thickness around the mandibular anteriors pre and post retraction in class I Bimaxillary protrusion cases using Cone Beam Computed tomographic images. Methodology: Ten patients undergoing orthodontic treatment with MBT 3M (Abzil)- 0.022 slot appliance were selected. Changes in the alveolar bone was measured in the Mandibular anterior region using pre-retraction and post-treatment CBCT. Labial bone thickness (LaBT), Lingual bone thickness (LiBT), and Total bone thickness (TBT) were assessed at the Crestal, Midroot, and Apical levels. Result: Total alveolar bone thickness was reduced when compared to the pretreatment CBCT images. The difference value of the mean Labial Bone Thickness [LaBT] at Crestal level was 0.04 (p value=0.02), Midroot level was 0.06 (p value=0.057), Apical level was 0.1 (p value=0.02), The difference value of the mean Lingual Bone Thickness [LiBT] at Crestal level was 0.05 (p value=0.05), Midroot level was 0.057 (p value=0.07), Apical level was 0.067 (p value=0.07). The difference value of the mean. Total Bone Thickness [TBT] at Crestal level was 0.05 (p value=0.05), Midroot level was 0.15 (p value=0.157), Apical level was 0.011 (p value=0.02). Conclusion: The study showed that there was an increase in the labial bone thickness and decrease in the lingual bone thickness as well as total alveolar bone thickness.