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Prediction of condylar movement envelope surface based on facial morphology

The present study aimed to predict the envelope surfaces from facial morphology. Condylar envelope surfaces for 34 healthy adults were formed and simplified as sagittal section curves. Cephalometric and maximum mandibular moving distances measurement were performed on the participants. There was no...

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Autores principales: Chen, Kenan, Zhang, Zhehao, Jiang, Junqi, Wang, Junlin, Wang, Jing, Sun, Yuchun, Xu, Xiangliang, Guo, Chuanbin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10362184/
https://www.ncbi.nlm.nih.gov/pubmed/37483714
http://dx.doi.org/10.1016/j.heliyon.2023.e17769
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author Chen, Kenan
Zhang, Zhehao
Jiang, Junqi
Wang, Junlin
Wang, Jing
Sun, Yuchun
Xu, Xiangliang
Guo, Chuanbin
author_facet Chen, Kenan
Zhang, Zhehao
Jiang, Junqi
Wang, Junlin
Wang, Jing
Sun, Yuchun
Xu, Xiangliang
Guo, Chuanbin
author_sort Chen, Kenan
collection PubMed
description The present study aimed to predict the envelope surfaces from facial morphology. Condylar envelope surfaces for 34 healthy adults were formed and simplified as sagittal section curves. Cephalometric and maximum mandibular moving distances measurement were performed on the participants. There was no statistically significant difference (p = 0.763) between the left and right maximum lateral movements. There was a statistically significant difference in the mandibular body length between the sexes. The envelope surfaces were divided into type 1 with H(p2) ≥ 1/3 H(p1) and type 2 with H(p2) < 1/3 × H(p1). SNA and SNB for type 2 were significantly greater than those for type 1 (p < 0.001). Therefore, the participants were divided into four groups based on gender and envelope surface morphology. The curves could be fitted using the second-order Fourier function (R-square ≥0.95). Six facial parameters were selected and a matrix was used to map facial morphology to the envelope surface. Individual sagittal curves were predicted using the matrix and facial parameters, and the envelope surface was predicted using the curve and the condyle model. Deviation analysis for the predicted envelope surface using the actual envelope as a reference was carried out (root mean square = 0.9970 mm ± 0.2918 mm). This method may lay a foundation for the geometric design of artificial fossa components of temporomandibular joint replacement systems. It may improve prosthesis design without flexible tissue repair and guide the movement of the artificial joint head.
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spelling pubmed-103621842023-07-23 Prediction of condylar movement envelope surface based on facial morphology Chen, Kenan Zhang, Zhehao Jiang, Junqi Wang, Junlin Wang, Jing Sun, Yuchun Xu, Xiangliang Guo, Chuanbin Heliyon Research Article The present study aimed to predict the envelope surfaces from facial morphology. Condylar envelope surfaces for 34 healthy adults were formed and simplified as sagittal section curves. Cephalometric and maximum mandibular moving distances measurement were performed on the participants. There was no statistically significant difference (p = 0.763) between the left and right maximum lateral movements. There was a statistically significant difference in the mandibular body length between the sexes. The envelope surfaces were divided into type 1 with H(p2) ≥ 1/3 H(p1) and type 2 with H(p2) < 1/3 × H(p1). SNA and SNB for type 2 were significantly greater than those for type 1 (p < 0.001). Therefore, the participants were divided into four groups based on gender and envelope surface morphology. The curves could be fitted using the second-order Fourier function (R-square ≥0.95). Six facial parameters were selected and a matrix was used to map facial morphology to the envelope surface. Individual sagittal curves were predicted using the matrix and facial parameters, and the envelope surface was predicted using the curve and the condyle model. Deviation analysis for the predicted envelope surface using the actual envelope as a reference was carried out (root mean square = 0.9970 mm ± 0.2918 mm). This method may lay a foundation for the geometric design of artificial fossa components of temporomandibular joint replacement systems. It may improve prosthesis design without flexible tissue repair and guide the movement of the artificial joint head. Elsevier 2023-07-07 /pmc/articles/PMC10362184/ /pubmed/37483714 http://dx.doi.org/10.1016/j.heliyon.2023.e17769 Text en © 2023 The Authors. Published by Elsevier Ltd. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Research Article
Chen, Kenan
Zhang, Zhehao
Jiang, Junqi
Wang, Junlin
Wang, Jing
Sun, Yuchun
Xu, Xiangliang
Guo, Chuanbin
Prediction of condylar movement envelope surface based on facial morphology
title Prediction of condylar movement envelope surface based on facial morphology
title_full Prediction of condylar movement envelope surface based on facial morphology
title_fullStr Prediction of condylar movement envelope surface based on facial morphology
title_full_unstemmed Prediction of condylar movement envelope surface based on facial morphology
title_short Prediction of condylar movement envelope surface based on facial morphology
title_sort prediction of condylar movement envelope surface based on facial morphology
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10362184/
https://www.ncbi.nlm.nih.gov/pubmed/37483714
http://dx.doi.org/10.1016/j.heliyon.2023.e17769
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