Development of a maxillomandibular arch form based on the center of resistance of teeth using cone-beam computed tomography
- Authors
- Moon, H.-W.; Nam, W.; Ahn, H.-W.; Oh, S.H.; Kook, Y.-A.; Kim, S.-H.
- Issue Date
- Feb-2022
- Publisher
- Elsevier Inc.
- Citation
- American Journal of Orthodontics and Dentofacial Orthopedics, v.161, no.2, pp 208 - 219
- Pages
- 12
- Journal Title
- American Journal of Orthodontics and Dentofacial Orthopedics
- Volume
- 161
- Number
- 2
- Start Page
- 208
- End Page
- 219
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/51769
- DOI
- 10.1016/j.ajodo.2020.07.041
- ISSN
- 0889-5406
1097-6752
- Abstract
- Introduction: Controlling transverse discrepancies is necessary to ensure stable and functional occlusion. Altered molar inclinations can camouflage the transverse relationship. The purpose of this research was to evaluate the maxillomandibular relationship of the center of resistance (CR) of the arch form created by the CR of teeth and compare these CR arch forms by their skeletal patterns. Methods: Sixty patients with minor crowding and normal posterior overjet were divided into 3 groups according to ANB angle: skeletal Class I group had ANB angle between 0° and 4° (n = 20), skeletal Class II group had ANB angle >4° (n = 20), and skeletal Class III group had ANB angle <0° (n = 20). The 3-dimensional coordinates of the CR were estimated using cone-beam computed tomography images and projected on the CR occlusal plane to obtain the 2-dimensional coordinates. The CR arch forms were constructed and evaluated using Matlab (MathWorks, Natick, Mass). Results: On comparing maxillomandibular CR arch form widths, the maxilla was significantly larger than the mandible of the canine and first premolar. The mandible was larger in the first molar of the skeletal Class III group. The maxillomandibular CR arch form width ratios were between 0.97 and 1.35. On comparing maxillomandibular CR arch form areas, the maxilla was significantly larger than the mandible in the anterior segment, and the mandible was larger in the posterior segment. The ratios were between 0.86 and 2.25. In between-group comparison, the skeletal Class III group showed significantly greater arch forms in the mandible. Conclusions: CR arch forms had significant maxillomandibular differences throughout the arch. The maxillomandibular ratios could be a reference for site-specific transverse discrepancy analysis. © 2021 American Association of Orthodontists
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > School of Mechanical Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.