Changes of Upper Root and Buccal Alveolar Bone Resorption after MSE: A Cone-beam CT analysis

doi:10.13701/j.cnki.kqyxyj.2021.06.014

Abstract

Abstract: Objective: To determine the changes of upper root and buccal alveolar bone resorption after MSE expander by cone-beam CT (CBCT). Methods: This study included 16 patients (7 males and 9 females ranged from 16 to 24years) with narrow upper arch treated with MSE. CBCT images were taken before and after expansion. All Dicom data were imported Mimics17.0 software and reconstructed. The root length and alveolar bone height/thickness were compared and measured, respectively. Statistical analysis were performed using paired t-test. Results: The CBCT measurements were as follows: (1)There was only slight change in all measured root length, but no statistical significance (P>0.05); (2)The buccal alveolar bone height and thickness showed significant changes in anchorage teeth, but there was no significant change in non-anchorage teeth (P>0.05). Conclusion: No significant root resorption was found after MSE treatment. The alveolar height and thickness resorption was more severe in the anchorage teeth than in the non-anchorage teeth, which provided reference for clinical selection of dental expander types.

Key words: rapid maxillary expansion, root resorption, cone-beam CT

ZHENG Rusong, LI Yantao, WANG Lanzhu, SHENG Anju. Changes of Upper Root and Buccal Alveolar Bone Resorption after MSE: A Cone-beam CT analysis[J]. Journal of Oral Science Research, 2021, 37(6): 543-548.

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