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顎関節症における咬合接触と咬合力分布

颞下颌关节疾病的咬合接触和咬合力分布

基本信息

批准号：
10671813
负责人：
許重人
金额：
$ 1.54万
依托单位：
Tohoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10671813/
关键词：
顎関節症咬合接触点数咬合接触面積咬合力分布左右差

项目摘要

顎関節症の発症には咬合異常が関与すると考えられているが,いかなる咬合異常が顎関節症の発症にどのように関与しているかは,未だ明らかではない.そこで本研究では,咬合接触の異常に着目し,顎関節症と咬合接触状態および歯列上の咬合力分布の関連を明らかにすることを目的とした.本年度は顎関節症患者40名を対象に,PCPで記録した咬合接触状態(咬合接触点数,咬合接触面積),および咬合力分布について検索した.得られた結果は以下のとおりである.(1)患者群の咬合接触点数は,4.2±2.3点(平均±標準偏差)であった.この値は,昨年度に得られた健常者群の咬合接触点数(21.5±7.7)よりも有意に少なかった.(2)咬合接触点数の左右バランスをAsymmetry Index(AI)を用いて検索すると,患者群のAIは,54.3±32.0%で,健常者群の10.1±7.5%よりも有意に大きかった.(3)咬合接触面積の左右バランスについても,AIを用いて検索すると,患者群のAIは,54.6±33.1%で,健常者群の14.9±9.7%よりも有意に大きかった.(4)前歯部および小臼歯部の咬合接触面積比は,患者群,健常者群ともにほぼ同様の値を示した.(5)患者群の第一大臼歯の咬合接触面積比(11.3±16.6%)は,健常者群の値(32.4±10.7%)よりも有意に小さく,逆に,患者群の第二大臼歯の面積比(55.4±34.2%)は,健常者群の面積比(38.8±10.5%)よりも有意に大きな値を示した.(6)患者群の各歯種の咬合力比は,後方歯ほど大きい傾向を示した.咬合力比の平均は,第二大臼歯(25.4±9.3%),第一大臼歯(14.9±8.6%),第二小臼歯(3.6±3.1%)の順に小さくなった.(7)すべての歯種において咬合力比の値は,患者群と健常者群との間に有意差が認められなかった.以上より,顎関節症患者の咬合接触は,前後的,左右的にバランスを崩していることが示唆された.

Jaw joint disease, abnormal bite, joints and joints, abnormal bite and jaw joint Symptoms of the disease are related to the disease, and the disease is not related to the disease. This study is related to the occlusion. The abnormality of the contact and the connection between the jaw joint disease and the state of the occlusal contact and the distribution of the bite force on the column are clearly related.にすることをPurpose とした. This year, 40 patients with jaw joint disease were treated, PCP recorded occlusal joints Contact state (number of occlusal contact points, occlusal contact area), occlusal force distribution, occlusal force distribution and occlusal force distribution. The results were as follows: (1) The number of occlusal contact points in the patient group was 4.2 ± 2.3 points (mean ± standard Accurate deviation), the number of occlusal contact points of the normal group of healthy people last year (21.5±7 .7)よりも无码的になかった.(2)The number of bite contact points and the left and right バランスをAsymmetry Index(AI) is used for AI, the patient group is AI, 54.3±32.0%, and the healthy group is 10.1±7.5%, and the patient group is large.た.(3) The occlusal contact area is 54.6±33.1%, and the healthy person group is 14. 9±9.7% of the teeth are large and small. (4) The ratio of the occlusal contact area of the anterior and posterior joints to the small joints is the ratio of the occlusal contact area of the patient group and the healthy group. (5) The largest occlusal contact area ratio in the patient group (11.3±16.6%), and the largest ratio in the healthy group (32.4±10.7%) are small and small, inverse. , the second largest mortar area ratio in the patient group (55.4±34.2%), and the area ratio in the healthy group (38.8±10.5%) are both intentional and large. (6) The occlusal force ratio of each type of patient group is the same, and the posterior occlusal force ratio is larger and the tendency is higher. The occlusal force ratio is average, the second largest mortar (25.4±9.3%), the first largest mortar ( 14.9±8.6%), the second minor mortar (3.6±3.1%) is a small, smooth, small one. (7) The bite force ratio of the second small mortar is small, and the patient group is healthy. The group of people who have intentional differences are not aware of the differences between them. The above are the bites of patients with jaw joint disease. The joint contact, the front and back, the left and right, the collapse of the left and right.