Cargando…

Variations in the buccal-lingual alveolar bone thickness of impacted mandibular third molar: our classification and treatment perspectives

Selecting either buccal or lingual approach for the mandibular third molar surgical extraction has been an intense debate for years. The aim of this observational retrospective study was to classify the molar based on the proximity to the external cortical bone, and analyze the position of inferior...

Descripción completa

Detalles Bibliográficos
Autores principales: Ge, Jing, Zheng, Jia-Wei, Yang, Chi, Qian, Wen-Tao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4725356/
https://www.ncbi.nlm.nih.gov/pubmed/26759181
http://dx.doi.org/10.1038/srep16375
_version_ 1782411628147376128
author Ge, Jing
Zheng, Jia-Wei
Yang, Chi
Qian, Wen-Tao
author_facet Ge, Jing
Zheng, Jia-Wei
Yang, Chi
Qian, Wen-Tao
author_sort Ge, Jing
collection PubMed
description Selecting either buccal or lingual approach for the mandibular third molar surgical extraction has been an intense debate for years. The aim of this observational retrospective study was to classify the molar based on the proximity to the external cortical bone, and analyze the position of inferior alveolar canal (IAC) of each type. Cone-beam CT (CBCT) data of 110 deeply impacted mandibular third molars from 91 consecutive patients were analyzed. A new classification based on the mean deduction value (MD) of buccal-lingual alveolar bone thickness was proposed: MD≥1 mm was classified as buccal position, 1 mm>MD>−1 mm was classified as central position, MD≤−1 mm was classified as lingual position. The study samples were distributed as: buccal position (1.8%) in 2 subjects, central position (10.9%) in 12 and lingual position (87.3%) in 96. Ninety-six molars (87.3%) contacted the IAC. The buccal and inferior IAC course were the most common types in impacted third molar, especially in lingually positioned ones. Our study suggested that amongst deeply impacted mandibular third molars, lingual position occupies the largest proportion, followed by the central, and then the buccal type.
format Online
Article
Text
id pubmed-4725356
institution National Center for Biotechnology Information
language English
publishDate 2016
publisher Nature Publishing Group
record_format MEDLINE/PubMed
spelling pubmed-47253562016-01-28 Variations in the buccal-lingual alveolar bone thickness of impacted mandibular third molar: our classification and treatment perspectives Ge, Jing Zheng, Jia-Wei Yang, Chi Qian, Wen-Tao Sci Rep Article Selecting either buccal or lingual approach for the mandibular third molar surgical extraction has been an intense debate for years. The aim of this observational retrospective study was to classify the molar based on the proximity to the external cortical bone, and analyze the position of inferior alveolar canal (IAC) of each type. Cone-beam CT (CBCT) data of 110 deeply impacted mandibular third molars from 91 consecutive patients were analyzed. A new classification based on the mean deduction value (MD) of buccal-lingual alveolar bone thickness was proposed: MD≥1 mm was classified as buccal position, 1 mm>MD>−1 mm was classified as central position, MD≤−1 mm was classified as lingual position. The study samples were distributed as: buccal position (1.8%) in 2 subjects, central position (10.9%) in 12 and lingual position (87.3%) in 96. Ninety-six molars (87.3%) contacted the IAC. The buccal and inferior IAC course were the most common types in impacted third molar, especially in lingually positioned ones. Our study suggested that amongst deeply impacted mandibular third molars, lingual position occupies the largest proportion, followed by the central, and then the buccal type. Nature Publishing Group 2016-01-13 /pmc/articles/PMC4725356/ /pubmed/26759181 http://dx.doi.org/10.1038/srep16375 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Ge, Jing
Zheng, Jia-Wei
Yang, Chi
Qian, Wen-Tao
Variations in the buccal-lingual alveolar bone thickness of impacted mandibular third molar: our classification and treatment perspectives
title Variations in the buccal-lingual alveolar bone thickness of impacted mandibular third molar: our classification and treatment perspectives
title_full Variations in the buccal-lingual alveolar bone thickness of impacted mandibular third molar: our classification and treatment perspectives
title_fullStr Variations in the buccal-lingual alveolar bone thickness of impacted mandibular third molar: our classification and treatment perspectives
title_full_unstemmed Variations in the buccal-lingual alveolar bone thickness of impacted mandibular third molar: our classification and treatment perspectives
title_short Variations in the buccal-lingual alveolar bone thickness of impacted mandibular third molar: our classification and treatment perspectives
title_sort variations in the buccal-lingual alveolar bone thickness of impacted mandibular third molar: our classification and treatment perspectives
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4725356/
https://www.ncbi.nlm.nih.gov/pubmed/26759181
http://dx.doi.org/10.1038/srep16375
work_keys_str_mv AT gejing variationsinthebuccallingualalveolarbonethicknessofimpactedmandibularthirdmolarourclassificationandtreatmentperspectives
AT zhengjiawei variationsinthebuccallingualalveolarbonethicknessofimpactedmandibularthirdmolarourclassificationandtreatmentperspectives
AT yangchi variationsinthebuccallingualalveolarbonethicknessofimpactedmandibularthirdmolarourclassificationandtreatmentperspectives
AT qianwentao variationsinthebuccallingualalveolarbonethicknessofimpactedmandibularthirdmolarourclassificationandtreatmentperspectives