Root Surface Changes in Endodontically Treated Teeth Following Orthodontic Movement.
J Endod 2022;
48:1361-1366. [PMID:
35964706 DOI:
10.1016/j.joen.2022.08.002]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 08/02/2022] [Accepted: 08/03/2022] [Indexed: 01/26/2023]
Abstract
INTRODUCTION
Orthodontically induced external root resorption (OIERR) has been labeled an unavoidable consequence of orthodontic tooth movement (OTM). The objective of this study was to investigate the change in surface area (mm2) and volume (mm3) of endodontically treated teeth (ETT) compared to contralateral teeth with a vital pulp (VPT) following OTM.
METHODS
Seventy-six teeth were included in this retrospective analysis: ETT (n=38) and VPT (n=38). All teeth were evaluated using CBCT imaging at two time periods: before OTM (T1) and after OTM (T2). Study teeth were segmented to include all areas contained within the lamina dura and then were converted into a mesh model for data calculation. The surface area (mm2) and volume (mm3) of each tooth was calculated at T1 and T2 based on the number of cubic voxels present within the mesh model. Statistical analysis was performed using a linear mixed-effects model.
RESULTS
The average change in surface area following OTM in ETT was 13.01 mm2, and 19.95 mm2 in VPT (p<0.05). The average percent change in surface area following OTM in ETT was 2.09%, and 3.38% in VPT (p<0.05). The average change in volume following OTM in ETT was 22.48 mm3, and 32.44 mm3 in VPT (p<0.05). The average percent change in volume following OTM in ETT was 2.62%, and 4.10% in VPT (p<0.05).
CONCLUSIONS
The results from this study suggest that ETT are less susceptible to root resorption following OTM than their vital counterparts.
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