オクルーザルスプリントに付与する咬合接触の違いが顎関節部粘弾性特性に及ぼす影響

不同咬合接触对咬合夹板颞下颌关节粘弹性的影响

• 批准号: 12771211
• 负责人: 龍田 光弘
• 金额: $ 0.96万
• 依托单位: Osaka Dental University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Encouragement of Young Scientists (A)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12771211/
• 关键词: 顎関節; オクルーザルスプリント; 治療; 顎関節症; 咬合

本研究ではオクルーザルスプリント(以下,スプリント)を用いた顎機能異常治療が顎関節部粘弾性特性に及ぼす影響について検討することを目的として,スプリントに付与する咬合接触状態を変化させ,その際の顎関節部粘弾性特性の変化を観察した.実験1として顎口腔系に自覚的・他覚的症状を認めない健常者を対象に,左右的および前後的に不均衡な咬合接触を付与したスプリントを装着し,1分間のクレンチングを行なわせた場合の顎関節部粘弾性特性の変化について検討を行った.実験2として顎機能異常を主訴として本学附属病院を受診した患者を対象にスプリント治療を行った場合の顎関節部粘弾性特性の変化について検討を行った.スプリントは上顎全歯列被覆型スタビライゼーションスプリントとし,通法に従って製作した.咬合接触は両側臼歯部に一歯一点以上の接触を付与した.測定はスプリント装着前,装着2週間後,4週間後,8週間後とした.いずれの実験においても,顎関節部粘弾性特性の測定には顎関節部粘弾性測定装置を用い,粘性値,弾性値,慣性値を評価パラメータとした.実験1の結果,均衡な咬合接触を付与したスプリント上でのクレンチングでは粘弾性特性の3パラメータは変化しなかったが,前後的あるいは左右的に不均衡な状態でのクレンチングではクレンチング終了後2分間の間,弾性値が有意に変化し,前後的に不均衡な場合では低値を,左右的に不均衡な場合では高値を示した.実験2の結果,顎機能異常患者では,初診時の段階で顎関節部粘弾性特性値が健常者よりも高いものと低いものの二群に分かれた.また,これらの患者に対して治療を行った場合,治療に伴い顎関節部粘弾性特性値は変化し,治療の進行に伴い健常者のとる基準範囲に近づく傾向が認められた.同時に,患者の症状も改善される傾向があった.

The purpose of this study is to investigate the changes in the state of occlusal contact and the changes in the viscosity characteristics of jaw joints during the treatment of jaw dysfunction. 1. The oral system of the jaw is characterized by self-absorption and other symptoms. 2. The normal person is identified. 3. The left and right sides of the jaw are not balanced. 4. The front and back of the jaw are not balanced. 5. The front and back of the jaw are unbalanced. 6. The front and back of the jaw are unbalanced. 7. The front and back of the jaw are unbalanced. 8. The front and back of the jaw are unbalanced. 9. The front and back of the jaw are unbalanced. 8. 9 2. Study on the changes in the characteristics of jaw joint viscosity in patients with jaw dysfunction. The upper jaw is covered with a full set of teeth, and the upper jaw is covered with a full set of teeth The occlusal part of the jaw is more than one point away. Before installation, 2 weeks later, 4 weeks later and 8 weeks later. In the middle of the test, the measurement of the viscosity characteristics of the jaw joint part, the use of the viscosity measurement device of the jaw joint part, the viscosity value, the viscosity value, the inertia value, the evaluation of the viscosity value. As a result, the equilibrium occlusal contact is assigned to the upper part of the occlusal contact, and the viscosity characteristics are changed from three to three. The front and rear parts of the occlusal contact are changed from one to the other, and the left and right parts of the occlusal contact are changed from one to the other. In the second minute after the end of the occlusal contact, the viscosity value is changed intentionally. In the case of the front and rear parts of the occlusal contact, the imbalance value is changed from low to high. The results showed that the patients with jaw dysfunction were divided into two groups: those with normal jaw joint viscosity value, those with high jaw joint viscosity value, and those with low jaw joint viscosity value. The treatment is accompanied by a change in the viscosity characteristics of the jaw joint, and the treatment is accompanied by a change in the baseline parameters of the healthy patient. At the same time, the patient's symptoms tend to improve.