Measurement of mandibular growth using cone-beam computed tomography: a miniature pig model study.

The purpose of this study was to measure the long-term growth of the mandible in miniature pigs using 3D Cone-Beam Computerized Tomography (CBCT). The mandibles of the pigs were scanned monthly over 12 months using CBCT and the 3D mandibular models were reconstructed from the data. Seventeen anatomi...

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Autores principales:	Hsien-Shu Lin, Yunn-Jy Chen, Jia-Da Li, Tung-Wu Lu, Hau-Hung Chang, Chih-Chung Hu
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/42aeeb1fcabe43f08cfc05f9a53e2f24
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spelling	oai:doaj.org-article:42aeeb1fcabe43f08cfc05f9a53e2f242021-11-18T08:20:35ZMeasurement of mandibular growth using cone-beam computed tomography: a miniature pig model study.1932-620310.1371/journal.pone.0096540https://doaj.org/article/42aeeb1fcabe43f08cfc05f9a53e2f242014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24801528/?tool=EBIhttps://doaj.org/toc/1932-6203The purpose of this study was to measure the long-term growth of the mandible in miniature pigs using 3D Cone-Beam Computerized Tomography (CBCT). The mandibles of the pigs were scanned monthly over 12 months using CBCT and the 3D mandibular models were reconstructed from the data. Seventeen anatomical landmarks were identified and classified into four groups of line segments, namely anteroposterior, superoinferior, mediolateral and anteroinferior. The inter-marker distances, inter-segmental angles, volume, monthly distance changes and percentage of changes were calculated to describe mandibular growth. The total changes of inter-marker distances were normalized to the initial values. All inter-marker distances increased over time, with the greatest mean normalized total changes in the superoinferior and anteroposterior groups (p<0.05). Monthly distance changes were greatest during the first four months and then reduced over time. Percentages of inter-marker distance changes were similar among the groups, reaching half of the overall growth around the 4th month. The mandibular volume growth increased non-linearly with time, accelerating during the first five months and slowing during the remaining months. The growth of the mandible was found to be anisotropic and non-homogeneous within the bone and non-linear over time, with faster growth in the ramus than in the body. These growth patterns appeared to be related to the development of the dentition, providing necessary space for the teeth to grow upward for occlusion and for the posterior teeth to erupt.Hsien-Shu LinYunn-Jy ChenJia-Da LiTung-Wu LuHau-Hung ChangChih-Chung HuPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 5, p e96540 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hsien-Shu Lin Yunn-Jy Chen Jia-Da Li Tung-Wu Lu Hau-Hung Chang Chih-Chung Hu Measurement of mandibular growth using cone-beam computed tomography: a miniature pig model study.
description	The purpose of this study was to measure the long-term growth of the mandible in miniature pigs using 3D Cone-Beam Computerized Tomography (CBCT). The mandibles of the pigs were scanned monthly over 12 months using CBCT and the 3D mandibular models were reconstructed from the data. Seventeen anatomical landmarks were identified and classified into four groups of line segments, namely anteroposterior, superoinferior, mediolateral and anteroinferior. The inter-marker distances, inter-segmental angles, volume, monthly distance changes and percentage of changes were calculated to describe mandibular growth. The total changes of inter-marker distances were normalized to the initial values. All inter-marker distances increased over time, with the greatest mean normalized total changes in the superoinferior and anteroposterior groups (p<0.05). Monthly distance changes were greatest during the first four months and then reduced over time. Percentages of inter-marker distance changes were similar among the groups, reaching half of the overall growth around the 4th month. The mandibular volume growth increased non-linearly with time, accelerating during the first five months and slowing during the remaining months. The growth of the mandible was found to be anisotropic and non-homogeneous within the bone and non-linear over time, with faster growth in the ramus than in the body. These growth patterns appeared to be related to the development of the dentition, providing necessary space for the teeth to grow upward for occlusion and for the posterior teeth to erupt.
format	article
author	Hsien-Shu Lin Yunn-Jy Chen Jia-Da Li Tung-Wu Lu Hau-Hung Chang Chih-Chung Hu
author_facet	Hsien-Shu Lin Yunn-Jy Chen Jia-Da Li Tung-Wu Lu Hau-Hung Chang Chih-Chung Hu
author_sort	Hsien-Shu Lin
title	Measurement of mandibular growth using cone-beam computed tomography: a miniature pig model study.
title_short	Measurement of mandibular growth using cone-beam computed tomography: a miniature pig model study.
title_full	Measurement of mandibular growth using cone-beam computed tomography: a miniature pig model study.
title_fullStr	Measurement of mandibular growth using cone-beam computed tomography: a miniature pig model study.
title_full_unstemmed	Measurement of mandibular growth using cone-beam computed tomography: a miniature pig model study.
title_sort	measurement of mandibular growth using cone-beam computed tomography: a miniature pig model study.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/42aeeb1fcabe43f08cfc05f9a53e2f24
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Measurement of mandibular growth using cone-beam computed tomography: a miniature pig model study.

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