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Incidence of anterior disc displacement without reduction of the temporomandibular joint in patients with dentofacial deformity

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Title: Incidence of anterior disc displacement without reduction of the temporomandibular joint in patients with dentofacial deformity
Authors: Ooi, K. Browse this author
Inoue, N. Browse this author
Matsushita, K. Browse this author →KAKEN DB
Yamaguchi, H. Browse this author
Mikoya, T. Browse this author
Minowa, K. Browse this author
Kawashiri, S. Browse this author
Nishikata, S. Browse this author
Tei, K. Browse this author →KAKEN DB
Keywords: anterior disc displacement without reduction
dentofacial deformity
magnetic resonance imaging
anterior open bite
mandibular asymmetry
Issue Date: Apr-2018
Publisher: Elsevier
Journal Title: International journal of oral and maxillofacial surgery
Volume: 47
Issue: 4
Start Page: 505
End Page: 510
Publisher DOI: 10.1016/j.ijom.2017.11.017
Abstract: The aim of this study was to investigate the incidence of anterior disc displacement without reduction (ADDwoR) of the temporomandibular joint (TMJ) in patients with dentofacial deformity. Eighty-eight female patients (176 joints) with skeletal class III malocclusion and 33 female patients (66 joints) with skeletal class II malocclusion, with or without anterior open bite and asymmetry, were evaluated. Magnetic resonance imaging (MRI) of the TMJ was used to diagnose ADDwoR. A statistical analysis was performed to examine the relationship between ADDwoR and skeletal structure. ADDwoR was present in 37 of the 66 joints (56.1%) in class II compared to 34 of the 176 joints (19.3%) in class III (P < 0.05). In class III, ADDwoR was significantly more common in joints with mandibular asymmetry (24/74; 32.4%) than in joints with open bite (9/62; 14.5%) and joints with open bite and without mandibular asymmetry (1/38; 2.6%). In class II, ADDwoR was significantly less common in joints with mandibular asymmetry and without open bite (1/8; 12.5%). ADDwoR was only observed on the deviated side in both class III and class II with mandibular asymmetry. The prevalence of ADDwoR differed according to the dentofacial morphology.
Rights: © 2018, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
http://creativecommons.org/licenses/by-nc-nd/4.0/
Type: article (author version)
URI: http://hdl.handle.net/2115/73362
Appears in Collections:歯学院・歯学研究院 (Graduate School of Dental Medicine / Faculty of Dental Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 鄭 漢忠

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