@article{oai:niigata-u.repo.nii.ac.jp:00003655, author = {山田, 一尋 and 福井, 忠雄 and 森田, 修一 and 花田, 晃治 and 河野, 正司 and 山田, 好秋}, issue = {1}, journal = {日本顎口腔機能学会雑誌, 日本顎口腔機能学会雑誌}, month = {Aug}, note = {The relationship between bite force and craniofacial morphology has been studied with various methods in subjects free of temporomadibular disorder (TMD) signs and symptoms;however, whether these variables have any relation in TMD patients remains unclear. The aim of this study was to determine the relation between lateral facial morphology and bite force in TMD symptomatic and asymptomatic orthodontic patients. Experimental data were obtained from 42 orthodontic female patients (TMD free group:23 patients;TMD group:19 patients) using the Occlusal Prescale system. The following results were obtained:The mean total bite force was 768.8 ±525.8 N in the TMD free group and 438.1 ±380.1 N in the TMD group. The mean occlusal contact area was 12.9 ±11.9mm^2 in the TMD free group and 6.4 ±2.8mm^2 in the TMD group. The mean average occlusal pressure was 59.8 ±13.4kg/mm^2 in the TMD free group, and 69.9 ±9.0kg/mm^2 in the TMD group. The distribution of bite force, occlusal contact area and average occlusal pressure increased anteroposteriorly. Bite force, occlusal contact area and average occlusal pressure in the molar area of the TMD group were significantly lower than that of the TMD free group. Bite force, occlusal contact area and average occlusal pressure were significantly different between the TMD free and the TMD groups. Total bite force and contact area of the TMD free group showed a negative correlation to mandibular plane angle, gonial angle and a positive correlation to L1 to mandibular plane angle. Molar bite force and contact area in the TMD free group showed a negative correlation to mandibular plane angle, gonial angle, occlusal plane to FH and positive correlation to L1 to mandibular plane angle and UL-SN. Premolar bite force and contact area in the TMD free group also correlated negatively to mandibular plane angle and gonial angle. However, there was no correlation between lateral cephalometric and occlusal parameters and in TMD group. These results suggest that bite force relates to lateral craniofacial morphology in orthodontic patients with TMD free patient but not with TMD populations., 顎関節症患者の側面顎顔面形態と咬合力の相関関係を調べるために咬合力感圧シート(Dental Prescale 50H R type)を用いて,矯正女性患者42名(顎機能正常者23名,顎関節症患者19名)の咬合力,側面顎顔面形態を調べ,以下の結論を得た. 1.側面頭部X線規格写真の計測では,側面顎顔面形態は顎機能正常者と顎関節症患者の間に有意差は見られなかった. 2.歯列全体の咬合力は顎機能正常者では768.8 ±525.8 N,顎関節症患者では438.1 ±380.1 N,咬合接触面積は顎機能正常者では12.9 ±11.9mm^2,顎関節症患者では6.4 ±2.8mm^2,平均咬合圧は顎機能正常者59.8 ±13.4kg/mm^2,顎関節症患者68.9 ±9.0kg/mm^2で両群間に有意差を示した. 3.各歯の咬合力,咬合接触面積,平均咬合圧は後方歯にいくにしたがい増加した.臼歯部では咬合力,咬合接触面積,平均咬合圧に顎機能正常者と顎関節症患者で有意差を示した. 4.側面顎顔面形態と咬合力は歯列全体ではMandibular plane angle,Gonial angleと負の相関,L1 to mandibular plane angleと正の相関を示し,臼歯部ではMandibular plane angle,Gonial angle,Occlusal plane to FHと負の相関,L1 to mandibular plane angle,U1-SNと正の相関を示し,小臼歯部ではMandibular plane angle,Gonial angleと負の相関を示した. 5.顎関節症患者では咬合力と側面顎顔面形態は相関を示さなかった.以上から,顎機能正常者では咬合力と側面顎顔面形態が関連し,顎機能異常者では咬合力と側面顎顔面形態が関連しないことが示された.}, pages = {59--65}, title = {顎関節症を伴う不正咬合患者の側面顎顔面形態と咬合力の関連に関する研究}, volume = {4}, year = {1997} }