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Relationship between occlusal curvatures and mandibular deviation in orthodontic patients with temporomandibular disorders
Author(s) -
Ali I. M.,
Yamada K.,
Alkhamrah B.,
Vergara R.,
Hanada K.
Publication year - 2003
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1046/j.1365-2842.2003.01160.x
Subject(s) - medicine , premolar , molar , orthodontics , mandibular first molar , dentistry , craniofacial , mandibular second molar , mandible (arthropod mouthpart) , mandibular lateral incisor , botany , psychiatry , biology , genus
summary The aim of this study was to investigate the relationships between occlusal curvature (OC) and frontal craniofacial morphology in patients with and without temporomandibular disorders (TMD), using frontal cephalograms and a sophisticated measuring device (XYZAX S400A). Thirty‐seven female orthodontic patients (mean age 24·0 years) were divided into a TMD group ( n = 25) and no‐TMD group ( n = 12). In the TMD group, the lateral OCs of the mandibular second premolar, and first and second molars were significantly deeper on the deviated side than on the non‐deviated side, and the anteroposterior OCs of the mandibular second premolar and first molar were also significantly shallower on the deviated side. In the no‐TMD group, however, there were no significant differences in OCs between deviated and non‐deviated sides. The differences between right and left lateral OCs in the mandibular second premolar and first and second molars, as well as the anteroposterior OCs in the mandibular first and second molars, showed significant correlations with mandibular deviation in the TMD group. On the other hand, in the no‐TMD group, there was no significant correlation between OCs and mandibular deviation. The above results suggest that OCs might try to compensate for mandibular deviation in patients with TMD.