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Relationship between craniofacial morphology and congenitally missing mandibular incisors

BACKGROUND/PURPOSE: Treatment of incisors‘ agenesis is challenging that arouses orthodontists’ interests. The purpose of this study was to compare the craniofacial pattern of individuals with or without congenitally missing mandibular incisors. MATERIALS AND METHODS: This retrospective study include...

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Autores principales: Chen, Daniel De-Shing, Cheng, Johnson Hsin-Chung, Hsu, Cassidy Shu-Wen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Association for Dental Sciences of the Republic of China 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9201659/
https://www.ncbi.nlm.nih.gov/pubmed/35756788
http://dx.doi.org/10.1016/j.jds.2021.12.009
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author Chen, Daniel De-Shing
Cheng, Johnson Hsin-Chung
Hsu, Cassidy Shu-Wen
author_facet Chen, Daniel De-Shing
Cheng, Johnson Hsin-Chung
Hsu, Cassidy Shu-Wen
author_sort Chen, Daniel De-Shing
collection PubMed
description BACKGROUND/PURPOSE: Treatment of incisors‘ agenesis is challenging that arouses orthodontists’ interests. The purpose of this study was to compare the craniofacial pattern of individuals with or without congenitally missing mandibular incisors. MATERIALS AND METHODS: This retrospective study included patients receiving orthodontic consultation between 1999 and 2019 at the Orthodontic Division of the Dental Department of Taipei Medical University Hospital. Cephalometric measurements were obtained through manual tracing and by using computer software. A total of 31 measurements were obtained to evaluate skeletal, dental and soft tissues, and chin morphology. A multivariate analysis of covariance, analysis of covariance, and Scheffé’s post hoc tests were used to analyze the differences among a group of patients with one congenitally missing mandibular incisor (M1), a group of patients with two congenitally missing mandibular incisors (M2), and the control group. Student's t-test was used to analyze the differences between the M1 or M2 group and the control group. Significance was set at P < 0.05. RESULTS: Significant differences were observed between the M and control groups in terms of lower incisor angulation and facial balance. Regarding chin morphology, significant differences were noted between the M and control groups and also among the M1, M2, and control groups. CONCLUSION: The lower incisors of the M group are more retroclined than those of the control group, resulting in retrusive lower lips. Facial balance varies between the M and control groups. Congenitally missing mandibular incisors affect chin morphology, making the chin button prominent.
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spelling pubmed-92016592022-06-24 Relationship between craniofacial morphology and congenitally missing mandibular incisors Chen, Daniel De-Shing Cheng, Johnson Hsin-Chung Hsu, Cassidy Shu-Wen J Dent Sci Original Article BACKGROUND/PURPOSE: Treatment of incisors‘ agenesis is challenging that arouses orthodontists’ interests. The purpose of this study was to compare the craniofacial pattern of individuals with or without congenitally missing mandibular incisors. MATERIALS AND METHODS: This retrospective study included patients receiving orthodontic consultation between 1999 and 2019 at the Orthodontic Division of the Dental Department of Taipei Medical University Hospital. Cephalometric measurements were obtained through manual tracing and by using computer software. A total of 31 measurements were obtained to evaluate skeletal, dental and soft tissues, and chin morphology. A multivariate analysis of covariance, analysis of covariance, and Scheffé’s post hoc tests were used to analyze the differences among a group of patients with one congenitally missing mandibular incisor (M1), a group of patients with two congenitally missing mandibular incisors (M2), and the control group. Student's t-test was used to analyze the differences between the M1 or M2 group and the control group. Significance was set at P < 0.05. RESULTS: Significant differences were observed between the M and control groups in terms of lower incisor angulation and facial balance. Regarding chin morphology, significant differences were noted between the M and control groups and also among the M1, M2, and control groups. CONCLUSION: The lower incisors of the M group are more retroclined than those of the control group, resulting in retrusive lower lips. Facial balance varies between the M and control groups. Congenitally missing mandibular incisors affect chin morphology, making the chin button prominent. Association for Dental Sciences of the Republic of China 2022-04 2022-02-17 /pmc/articles/PMC9201659/ /pubmed/35756788 http://dx.doi.org/10.1016/j.jds.2021.12.009 Text en © 2022 Association for Dental Sciences of the Republic of China. Publishing services by Elsevier B.V. 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 Original Article
Chen, Daniel De-Shing
Cheng, Johnson Hsin-Chung
Hsu, Cassidy Shu-Wen
Relationship between craniofacial morphology and congenitally missing mandibular incisors
title Relationship between craniofacial morphology and congenitally missing mandibular incisors
title_full Relationship between craniofacial morphology and congenitally missing mandibular incisors
title_fullStr Relationship between craniofacial morphology and congenitally missing mandibular incisors
title_full_unstemmed Relationship between craniofacial morphology and congenitally missing mandibular incisors
title_short Relationship between craniofacial morphology and congenitally missing mandibular incisors
title_sort relationship between craniofacial morphology and congenitally missing mandibular incisors
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9201659/
https://www.ncbi.nlm.nih.gov/pubmed/35756788
http://dx.doi.org/10.1016/j.jds.2021.12.009
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