Cargando…

Crown and root lengths of incisors, canines, and premolars measured by cone-beam computed tomography in patients with malocclusions

OBJECTIVE: The purposes of this study were to determine the accuracy of crown and root length measurements of premolars using cone-beam computed tomography (CBCT) and to generate reference CBCT-based data on incisor, canine, and premolar lengths in patients with malocclusions. METHODS: Imaging was p...

Descripción completa

Detalles Bibliográficos
Autores principales: Kim, Seon-Young, Lim, Sung-Hoon, Gang, Sung-Nam, Kim, Hee-Jin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Korean Association of Orthodontists 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3879283/
https://www.ncbi.nlm.nih.gov/pubmed/24396736
http://dx.doi.org/10.4041/kjod.2013.43.6.271
_version_ 1782297952850542592
author Kim, Seon-Young
Lim, Sung-Hoon
Gang, Sung-Nam
Kim, Hee-Jin
author_facet Kim, Seon-Young
Lim, Sung-Hoon
Gang, Sung-Nam
Kim, Hee-Jin
author_sort Kim, Seon-Young
collection PubMed
description OBJECTIVE: The purposes of this study were to determine the accuracy of crown and root length measurements of premolars using cone-beam computed tomography (CBCT) and to generate reference CBCT-based data on incisor, canine, and premolar lengths in patients with malocclusions. METHODS: Imaging was performed using a CBCT scanner with a 0.292-mm voxel size and 12-bit grayscale. The CBCT-based length measurements were compared with direct measurements of 94 subsequently extracted premolars without metal restorations using the paired t-test. Furthermore, the crown and root lengths of incisors, canines, and premolars in 62 Korean patients with malocclusions were measured using CBCT, and Pearson's correlation coefficients were calculated to examine the relationship between the crown and root length measurements of each tooth type. RESULTS: The differences between the CBCT-based and direct measurements of the extracted premolars were not significant, with 95% limits of agreement of -0.90 to 0.90 mm for crown length and -1.23 to 1.18 mm for root length. Weak positive correlations between the crown and root length measurements were observed for the mandibular canine and premolars. CONCLUSIONS: The CBCT-based measurements showed a wider range of limits of agreements for root length than for crown length. The CBCT-based data can be used as a reference for evaluating root length and resorption of teeth without metal restorations in patients with malocclusions.
format Online
Article
Text
id pubmed-3879283
institution National Center for Biotechnology Information
language English
publishDate 2013
publisher Korean Association of Orthodontists
record_format MEDLINE/PubMed
spelling pubmed-38792832014-01-06 Crown and root lengths of incisors, canines, and premolars measured by cone-beam computed tomography in patients with malocclusions Kim, Seon-Young Lim, Sung-Hoon Gang, Sung-Nam Kim, Hee-Jin Korean J Orthod Original Article OBJECTIVE: The purposes of this study were to determine the accuracy of crown and root length measurements of premolars using cone-beam computed tomography (CBCT) and to generate reference CBCT-based data on incisor, canine, and premolar lengths in patients with malocclusions. METHODS: Imaging was performed using a CBCT scanner with a 0.292-mm voxel size and 12-bit grayscale. The CBCT-based length measurements were compared with direct measurements of 94 subsequently extracted premolars without metal restorations using the paired t-test. Furthermore, the crown and root lengths of incisors, canines, and premolars in 62 Korean patients with malocclusions were measured using CBCT, and Pearson's correlation coefficients were calculated to examine the relationship between the crown and root length measurements of each tooth type. RESULTS: The differences between the CBCT-based and direct measurements of the extracted premolars were not significant, with 95% limits of agreement of -0.90 to 0.90 mm for crown length and -1.23 to 1.18 mm for root length. Weak positive correlations between the crown and root length measurements were observed for the mandibular canine and premolars. CONCLUSIONS: The CBCT-based measurements showed a wider range of limits of agreements for root length than for crown length. The CBCT-based data can be used as a reference for evaluating root length and resorption of teeth without metal restorations in patients with malocclusions. Korean Association of Orthodontists 2013-12 2013-12-09 /pmc/articles/PMC3879283/ /pubmed/24396736 http://dx.doi.org/10.4041/kjod.2013.43.6.271 Text en © 2013 The Korean Association of Orthodontists. http://creativecommons.org/licenses/by-nc/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Kim, Seon-Young
Lim, Sung-Hoon
Gang, Sung-Nam
Kim, Hee-Jin
Crown and root lengths of incisors, canines, and premolars measured by cone-beam computed tomography in patients with malocclusions
title Crown and root lengths of incisors, canines, and premolars measured by cone-beam computed tomography in patients with malocclusions
title_full Crown and root lengths of incisors, canines, and premolars measured by cone-beam computed tomography in patients with malocclusions
title_fullStr Crown and root lengths of incisors, canines, and premolars measured by cone-beam computed tomography in patients with malocclusions
title_full_unstemmed Crown and root lengths of incisors, canines, and premolars measured by cone-beam computed tomography in patients with malocclusions
title_short Crown and root lengths of incisors, canines, and premolars measured by cone-beam computed tomography in patients with malocclusions
title_sort crown and root lengths of incisors, canines, and premolars measured by cone-beam computed tomography in patients with malocclusions
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3879283/
https://www.ncbi.nlm.nih.gov/pubmed/24396736
http://dx.doi.org/10.4041/kjod.2013.43.6.271
work_keys_str_mv AT kimseonyoung crownandrootlengthsofincisorscaninesandpremolarsmeasuredbyconebeamcomputedtomographyinpatientswithmalocclusions
AT limsunghoon crownandrootlengthsofincisorscaninesandpremolarsmeasuredbyconebeamcomputedtomographyinpatientswithmalocclusions
AT gangsungnam crownandrootlengthsofincisorscaninesandpremolarsmeasuredbyconebeamcomputedtomographyinpatientswithmalocclusions
AT kimheejin crownandrootlengthsofincisorscaninesandpremolarsmeasuredbyconebeamcomputedtomographyinpatientswithmalocclusions