Volumetric measurement of root resorption following molar mini-screw implant intrusion using cone beam computed tomography.

<h4>Objective</h4>Molar intrusion by mini-screw implantation can cause different degrees of root resorption. However, most methods (2-D and 3-D) used for evaluating root resorption have focused on the root length without considering 3-D resorption. The purpose of this study was to volume...

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Autores principales:	Wen Li, Fei Chen, Feng Zhang, Wanghui Ding, Qingsong Ye, Jiejun Shi, Baiping Fu
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e6048942dc18440090ca56e09f074445
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spelling	oai:doaj.org-article:e6048942dc18440090ca56e09f0744452021-11-18T07:50:04ZVolumetric measurement of root resorption following molar mini-screw implant intrusion using cone beam computed tomography.1932-620310.1371/journal.pone.0060962https://doaj.org/article/e6048942dc18440090ca56e09f0744452013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23585866/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Objective</h4>Molar intrusion by mini-screw implantation can cause different degrees of root resorption. However, most methods (2-D and 3-D) used for evaluating root resorption have focused on the root length without considering 3-D resorption. The purpose of this study was to volumetrically evaluate root resorption using cone beam computed tomography(CBCT) after mini-screw implant intrusion.<h4>Materials and methods</h4>1. The volumes of 32 teeth were measured using CBCT and laser scanning to verify the accuracy of CBCT. 2. Twelve overerupted molars from adult patients were investigated in this study. After mini-screw implants were inserted into the buccal and palatal alveolar bones, 150 g of force was applied to the mini-screw implants on each side to intrude the molars. CBCT images of all patients were taken immediately prior to intrusion and after intrusion. The volumes of the roots were calculated using the Mimics software program. The differences between the pre-intrusion and post-intrusion root volumes were statistically evaluated with a paired-samples t-test. In addition, the losses of the roots were statistically compared with each other using one-way analysis of variance at the P<0.05 level.<h4>Results</h4>No statistically significant volume differences were observed between the physical (laser scanning) and CBCT measurements (P>0.05). The overerupted molars were significantly intruded (P<0.05), and the average intrusion was 3.30±1.60 mm. The differences between the pre-intrusion and post-intrusion root volumes were statistically significant for all of the roots investigated (P<0.05). The roots were sorted by volume loss in descending order as follows: mesiobuccal, palatal, and distobuccal. Statistical significance was achieved among the three roots. The average total resorption for each tooth was 58.39±1.54 mm(3).<h4>Conclusion</h4>Volume measurement using CBCT was able to effectively evaluate root resorption caused by mini-screw intrusion. The highest volume loss was observed in the mesiobuccal root among the three roots of the investigated first molar teeth.Wen LiFei ChenFeng ZhangWanghui DingQingsong YeJiejun ShiBaiping FuPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 4, p e60962 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Wen Li Fei Chen Feng Zhang Wanghui Ding Qingsong Ye Jiejun Shi Baiping Fu Volumetric measurement of root resorption following molar mini-screw implant intrusion using cone beam computed tomography.
description	<h4>Objective</h4>Molar intrusion by mini-screw implantation can cause different degrees of root resorption. However, most methods (2-D and 3-D) used for evaluating root resorption have focused on the root length without considering 3-D resorption. The purpose of this study was to volumetrically evaluate root resorption using cone beam computed tomography(CBCT) after mini-screw implant intrusion.<h4>Materials and methods</h4>1. The volumes of 32 teeth were measured using CBCT and laser scanning to verify the accuracy of CBCT. 2. Twelve overerupted molars from adult patients were investigated in this study. After mini-screw implants were inserted into the buccal and palatal alveolar bones, 150 g of force was applied to the mini-screw implants on each side to intrude the molars. CBCT images of all patients were taken immediately prior to intrusion and after intrusion. The volumes of the roots were calculated using the Mimics software program. The differences between the pre-intrusion and post-intrusion root volumes were statistically evaluated with a paired-samples t-test. In addition, the losses of the roots were statistically compared with each other using one-way analysis of variance at the P<0.05 level.<h4>Results</h4>No statistically significant volume differences were observed between the physical (laser scanning) and CBCT measurements (P>0.05). The overerupted molars were significantly intruded (P<0.05), and the average intrusion was 3.30±1.60 mm. The differences between the pre-intrusion and post-intrusion root volumes were statistically significant for all of the roots investigated (P<0.05). The roots were sorted by volume loss in descending order as follows: mesiobuccal, palatal, and distobuccal. Statistical significance was achieved among the three roots. The average total resorption for each tooth was 58.39±1.54 mm(3).<h4>Conclusion</h4>Volume measurement using CBCT was able to effectively evaluate root resorption caused by mini-screw intrusion. The highest volume loss was observed in the mesiobuccal root among the three roots of the investigated first molar teeth.
format	article
author	Wen Li Fei Chen Feng Zhang Wanghui Ding Qingsong Ye Jiejun Shi Baiping Fu
author_facet	Wen Li Fei Chen Feng Zhang Wanghui Ding Qingsong Ye Jiejun Shi Baiping Fu
author_sort	Wen Li
title	Volumetric measurement of root resorption following molar mini-screw implant intrusion using cone beam computed tomography.
title_short	Volumetric measurement of root resorption following molar mini-screw implant intrusion using cone beam computed tomography.
title_full	Volumetric measurement of root resorption following molar mini-screw implant intrusion using cone beam computed tomography.
title_fullStr	Volumetric measurement of root resorption following molar mini-screw implant intrusion using cone beam computed tomography.
title_full_unstemmed	Volumetric measurement of root resorption following molar mini-screw implant intrusion using cone beam computed tomography.
title_sort	volumetric measurement of root resorption following molar mini-screw implant intrusion using cone beam computed tomography.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/e6048942dc18440090ca56e09f074445
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Volumetric measurement of root resorption following molar mini-screw implant intrusion using cone beam computed tomography.

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