歯科用コーンビームCT画像を用いた顎変形症患者の下顎枝厚さの検討 Examination of mandibular ramus thickness by dental conebeam computed tomography in patiens with jaw deformity
The purpose of this study was to investigate mandibular ramus thickness by dental cone beam computed tomography (Morita Co, 3DX ®) in patients with jaw deformities. We examined mandibular ramus thickness on 180 sides in 90 patients with jaw deformities and 48 sides in 24 healthy controls with normal occlusion. We evaluated the thickness of the mandibular ramus on axial slices, at the height of the mandibular foramen plane. The results of our study are as follows:<BR>1) The mandibular ramus thickness in male controls and male subjects with jaw deformities did not differ significantly from the respective values in female controls and female subjects with jaw deformities.<BR>2) When female subjects with Class I, II, and IH jaw deformities were compared with female controls, the thickness of the mandibular foramen, posterior portion, and thinnest portion of bone marrow in Class II subjects did not differ significantly from those in Class I and II subjects; however the width of the anterior portion was significantly greater in Class II subjects than in Class I and IQ subjects.
日本口腔外科学会雑誌 52(10), 574-577, 2006-10-20
Japanese Society of Oral and Maxillofacial Surgeons