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Radiographic and micro-computed tomography classification of root canal morphology and dentin thickness of mandibular incisors

CONTEXT: Root canal anatomy is evaluated using different methodologies. AIMS: The aim of this study is to evaluate and classify root canal morphology and dentin thicknesses (DT), comparing radiographic and micro-computed tomography (CT) analysis. MATERIALS AND METHODS: Canal diameter and DT of mandi...

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Autores principales: Espir, Camila Galleti, Nascimento, Camila Almeida, Guerreiro-Tanomaru, Juliane Maria, Bonetti-Filho, Idomeo, Tanomaru-Filho, Mário
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Medknow Publications & Media Pvt Ltd 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5852937/
https://www.ncbi.nlm.nih.gov/pubmed/29628649
http://dx.doi.org/10.4103/JCD.JCD_230_16
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author Espir, Camila Galleti
Nascimento, Camila Almeida
Guerreiro-Tanomaru, Juliane Maria
Bonetti-Filho, Idomeo
Tanomaru-Filho, Mário
author_facet Espir, Camila Galleti
Nascimento, Camila Almeida
Guerreiro-Tanomaru, Juliane Maria
Bonetti-Filho, Idomeo
Tanomaru-Filho, Mário
author_sort Espir, Camila Galleti
collection PubMed
description CONTEXT: Root canal anatomy is evaluated using different methodologies. AIMS: The aim of this study is to evaluate and classify root canal morphology and dentin thicknesses (DT), comparing radiographic and micro-computed tomography (CT) analysis. MATERIALS AND METHODS: Canal diameter and DT of mandibular incisors (n = 520) were evaluated using digital radiographs in buccolingual (BL) and mesiodistal (MD) directions. The diameter ratio (DR) BL/MD was classified: flattened (FL, DR >4); oval (OV, 2≤ DR ≥4); rounded (RN, 1.1< DR >2); round (RO, 0.9≤ DR ≥1.1); and with BL flatness (BL, DR <0.9). OV (n = 110) were subjected to micro-CT. DT and DR were evaluated at 3, 6, and 9 mm. ANOVA, Tukey, and paired Wilcoxon tests (P < 0.05) were used. RESULTS: Radiographic classification was 23.3% FL, 41.3% OV, 27.3% RN, 4.5% RO, and 3.6% BL. DT was similar. Radiographic DT at 3 and 9 mm was greater than micro-CT (P < 0.05) and was similar at 6 mm (P > 0.05). DR differed between the analyses. Oval canals were predominant at all levels radiographically and at 9 and 6 mm in micro-CT analysis, with greater variation at 3 mm. CONCLUSION: Oval root canals are predominant in mandibular incisors at 9 mm. Radiographic DT is larger than observed in micro-CT at 3 and 9 mm, and the classification differed in each root level. The classification at 9 mm is indicated.
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spelling pubmed-58529372018-04-06 Radiographic and micro-computed tomography classification of root canal morphology and dentin thickness of mandibular incisors Espir, Camila Galleti Nascimento, Camila Almeida Guerreiro-Tanomaru, Juliane Maria Bonetti-Filho, Idomeo Tanomaru-Filho, Mário J Conserv Dent Original Research Article CONTEXT: Root canal anatomy is evaluated using different methodologies. AIMS: The aim of this study is to evaluate and classify root canal morphology and dentin thicknesses (DT), comparing radiographic and micro-computed tomography (CT) analysis. MATERIALS AND METHODS: Canal diameter and DT of mandibular incisors (n = 520) were evaluated using digital radiographs in buccolingual (BL) and mesiodistal (MD) directions. The diameter ratio (DR) BL/MD was classified: flattened (FL, DR >4); oval (OV, 2≤ DR ≥4); rounded (RN, 1.1< DR >2); round (RO, 0.9≤ DR ≥1.1); and with BL flatness (BL, DR <0.9). OV (n = 110) were subjected to micro-CT. DT and DR were evaluated at 3, 6, and 9 mm. ANOVA, Tukey, and paired Wilcoxon tests (P < 0.05) were used. RESULTS: Radiographic classification was 23.3% FL, 41.3% OV, 27.3% RN, 4.5% RO, and 3.6% BL. DT was similar. Radiographic DT at 3 and 9 mm was greater than micro-CT (P < 0.05) and was similar at 6 mm (P > 0.05). DR differed between the analyses. Oval canals were predominant at all levels radiographically and at 9 and 6 mm in micro-CT analysis, with greater variation at 3 mm. CONCLUSION: Oval root canals are predominant in mandibular incisors at 9 mm. Radiographic DT is larger than observed in micro-CT at 3 and 9 mm, and the classification differed in each root level. The classification at 9 mm is indicated. Medknow Publications & Media Pvt Ltd 2018 /pmc/articles/PMC5852937/ /pubmed/29628649 http://dx.doi.org/10.4103/JCD.JCD_230_16 Text en Copyright: © 2018 Journal of Conservative Dentistry http://creativecommons.org/licenses/by-nc-sa/3.0 This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms.
spellingShingle Original Research Article
Espir, Camila Galleti
Nascimento, Camila Almeida
Guerreiro-Tanomaru, Juliane Maria
Bonetti-Filho, Idomeo
Tanomaru-Filho, Mário
Radiographic and micro-computed tomography classification of root canal morphology and dentin thickness of mandibular incisors
title Radiographic and micro-computed tomography classification of root canal morphology and dentin thickness of mandibular incisors
title_full Radiographic and micro-computed tomography classification of root canal morphology and dentin thickness of mandibular incisors
title_fullStr Radiographic and micro-computed tomography classification of root canal morphology and dentin thickness of mandibular incisors
title_full_unstemmed Radiographic and micro-computed tomography classification of root canal morphology and dentin thickness of mandibular incisors
title_short Radiographic and micro-computed tomography classification of root canal morphology and dentin thickness of mandibular incisors
title_sort radiographic and micro-computed tomography classification of root canal morphology and dentin thickness of mandibular incisors
topic Original Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5852937/
https://www.ncbi.nlm.nih.gov/pubmed/29628649
http://dx.doi.org/10.4103/JCD.JCD_230_16
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