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Three-dimensional evaluation of a virtual setup considering the roots and alveolar bone in molar distalization cases

Authors
 Jaewook Huh  ;  Jing Liu  ;  Jae-Hun Yu  ;  Yoon Jeong Choi  ;  Hee-Kap Ahn  ;  Chooryung J Chung  ;  Jung-Yul Cha  ;  Kyung-Ho Kim 
Citation
 SCIENTIFIC REPORTS, Vol.13(1) : 14955, 2023-09 
Journal Title
SCIENTIFIC REPORTS
Issue Date
2023-09
MeSH
Cone-Beam Computed Tomography* ; Dental Care ; Humans ; Molar* / diagnostic imaging
Abstract
We aimed to evaluate root parallelism and the dehiscence or fenestrations of virtual teeth setup using roots isolated from cone beam computed tomography (CBCT) images. Sixteen patients undergoing non-extraction orthodontic treatment with molar distalization were selected. Composite teeth were created by merging CBCT-isolated roots with intraoral scan-derived crowns. Three setups were performed sequentially: crown setup considering only the crowns, root setup-1 considering root alignment, and root setup-2 considering the roots and surrounding alveolar bone. We evaluated the parallelism and exposure of the roots and compared the American Board of Orthodontics Objective Grading System (ABO-OGS) scores using three-dimensionally printed models among the setups. The mean angulation differences between adjacent teeth in root setups-1 and -2 were significantly smaller than in the crown setup, except for some posterior teeth (p < 0.05). The amount of root exposure was significantly smaller in root setup-2 compared to crown setup and root setup-1 except when the mean exposure was less than 0.6 mm (p < 0.05). There was no significant difference in ABO-OGS scores among the setups. Thus, virtual setup considering the roots and alveolar bone can improve root parallelism and reduce the risk of root exposure without compromising occlusion quality. © 2023, Springer Nature Limited.
Files in This Item:
T202400260.pdf Download
DOI
10.1038/s41598-023-41480-z
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kyung Ho(김경호) ORCID logo https://orcid.org/0000-0002-8154-2041
Chung, Chooryung J.(정주령) ORCID logo https://orcid.org/0000-0001-9399-7193
Cha, Jung Yul(차정열)
Choi, Yoon Jeong(최윤정) ORCID logo https://orcid.org/0000-0003-0781-8836
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/197842
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