A Study to Evaluate the Alveolar Bone Thickness During Anterior Retraction using Computed Tomography
Journal Title: International Journal of Contemporary Medical Research - Year 2017, Vol 4, Issue 5
Abstract
Introduction: The present study aims to evaluate the changes occurring in the alveolar bone thickness during anterior retraction after premolar extraction. Material and Methods: 10 maxillary as well as mandibular arches were included in the study that required retraction of anterior teeth after premolar extraction. En masse retraction was carried out using sliding mechanics in lower arch and loop mechanics in upper arch. The pre treatment and post treatment CT scans were evaluated to record the changes in the width of the alveolar bone at three levels S1, S2 and S3 for labial, palatal (lingual) and total alveolar bone. The results were compared. Results: The maxillary labial alveolar bone thickness reduced at crestal level and increased at mid root and apical level. The maxillary palatal alveolar bone thickness reduced at all the three levels.The maxillary total alveolar bone thickness showed a significant decrease in thickness at crestal level. The mandibular labial, lingual as well as total alveolar bone thickness was found to be reduced at all the three levels i.e, crestal, mid root and apical levels for all the four incisors. Conclusion: The alveolar bone remodeling occurs but there is a lag in the process of bone formation on the pressure side compared to the bone resorption on the tension side.
Authors and Affiliations
Anshu Singh, Subhash Chandra, D. K Agrawal, Preeti Bhattacharya
Keywords
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