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Maxillofacial Plastic and Reconstructive Surgery
Published in: Maxillofacial Plastic and Reconstructive Surgery 1/2017

Open Access 01-12-2017 | Research

Evaluation of mandibular lingula and foramen location using 3-dimensional mandible models reconstructed by cone-beam computed tomography

Authors: Cong Zhou, Tae-Hyun Jeon, Sang-Ho Jun, Jong-Jin Kwon

Published in: Maxillofacial Plastic and Reconstructive Surgery | Issue 1/2017

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Abstract

Background

The positions of the mandibular lingula and foramen have been set as indexes for inferior alveolar nerve (IAN) block and ramus osteotomies in orthognathic surgery. This study aimed to evaluate the anatomical structures of mandibular ramus, especially the mandibular lingula and foramen, by analyzing the cone-beam computed tomography (CBCT) data of young adults.

Methods

We evaluated 121 sides of hemi-mandibular CBCT model of 106 patients (51 male and 55 female patients; 18 to 36 years old). All the measurements were performed using the 2- and 3-dimensional rulers of OnDemand3D® software.

Results

Statistical analysis of the data revealed that there was no significant difference in the mandibular angle between the genders. The mandibular lingula was found to be located at the center of ramus in males, but a little posterior in relation to the center in females. The mandibular lingula was rarely located below the occlusal plane; however, the position of the mandibular foramen was more variable (84.3% below, 12.4% above, and 3.3% at the level of the occlusal plane).

Conclusions

The results of this study provide a valuable guideline for IAN block anesthesia and orthognathic surgery. CBCT can be considered effective and accurate in evaluating the fine structures of the mandible.
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Metadata
Title
Evaluation of mandibular lingula and foramen location using 3-dimensional mandible models reconstructed by cone-beam computed tomography
Authors
Cong Zhou
Tae-Hyun Jeon
Sang-Ho Jun
Jong-Jin Kwon
Publication date
01-12-2017
Publisher
Springer Berlin Heidelberg
Published in
Maxillofacial Plastic and Reconstructive Surgery / Issue 1/2017
Electronic ISSN: 2288-8586
DOI
https://doi.org/10.1186/s40902-017-0128-y

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