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KMID : 1033920190150020045
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Journal of The Korean Academy of Geriatric Denstry
2019 Volume.15 No. 2 p.45 ~ p.50
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Research on mandibular morphology and occlusal feature in TMD patients
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Bae Sun-Mee
Kim Young-Jun
Choi Hang-Moon
Park Moon-Soo
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Abstract
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Purpose: The purpose of this study was to analyze mandibular morphology and occlusal feature in healthy controls and temporomandibular disorder (TMD) patients.
Methods: Thirty healthy subjects and Thirty TMD patients participated in this study respectively. We made three measurements in mandibular morphology (medio-lateral dimension, antero-posterior dimension and intercondylar angle) using conebeam computed tomography image and eight measurements in occlusal feature (intercanine distance, inter-first molar distance, anterior arch length, total arch length, SNA, SNB, ANB and Go-Me) using diagnostic cast, lateral cephalometric radiograph.
Results: There was no difference between two groups in canine distance, first molar distance, and molar vertical distance.
Mandibular anterior arch length was significantly lower in the TMD group than control group, and the total arch length of TMD group was significantly smaller than that of control group in the maxilla and mandible. In comparison of cephalometric radiograph measurements, there was no difference between two groups in SNA, SNB, ANB, and Go-Me / FH, which are indicators of skeletal malocclusion. No significant difference was found between the two groups
in the comparison of the mandibular condyle size and the intercondylar angle measurements.
Conclusions: We couldn’t find any definite relationship between mandibular morphology, occlusal feature and TMD.
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KEYWORD
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Mandibular morphology, Occlusal feature, Temporomandibular disorder
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