高齢者における義歯Qualityが咀嚼筋断面積と咀嚼筋機能に及ぼす影響

义齿质量对老年人咀嚼肌横截面积及咀嚼肌功能的影响

• 批准号: 09771709
• 负责人: 田邊 忠輝
• 金额: $ 1.15万
• 依托单位: Iwate Medical 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: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-09771709/
• 关键词: 総義歯患者; 老化; Denture Quality; 咀嚼筋断面積; 咀嚼筋筋電図

総義歯患者の顎口腔機能の老化は,加齢や歯の喪失,全身的な要因のほか人為的関与による顎顔面形態の変化,総義歯のQualityなどさまざまな因子が複雑に絡み合って影響を受けると考えられる.本研究では,総義歯患者を被検者とし,MRIから求めた咀嚼筋断面積と最大咬みしめ時の筋電図を分析し,一般的臨床診査項目とあわせ検討することにより,総義歯のQualityが咀嚼筋断面積と咀嚼筋機能に及ぼす影響について明らかにすることを目的とする.被検者は総義歯製作を希望して来院した無歯顎患者から,無作為に抽出し,装着義歯のQualityの評価を,Quality scoreから求め,義歯Qualityの高い群(G1)と低い群(G2)に分けて咀嚼筋断面積と筋機能の関連を比較,検討した.咀嚼筋は,MRI装置(GE社製SIGNA)を用い,咬筋,側頭筋後部を撮像した.断面積の計測はMRIフィルムのトレース後,画像解析装署IBAS-2000(ZEISS社製)にて画像解析し計測した.最大咬みしめ時の咀嚼筋筋電図は,ポリグラフ(NECメディカルシステムズ社製)を用い,咬筋,側頭筋前部,ならびに後部から,表面電極にて双極導出し,記録した.筋電図データは,サーマルアレイレコーダーにて再生し,計測した.申請したパーソナルコンピュータにて,これら各分析データの集積を行い,以下の結果を得た.1. 咀嚼筋断面積は総義歯Qualityの低い群(G2)で有意な減少を認めた.2. 咀嚼筋活動量は総義歯Qualityの低い群(G2)で減少する傾向を示した.3. 咀嚼筋断面積と咀嚼筋活動量の相関はQualityの高い群(G1)の咬筋のみに認めた.4. 咀嚼筋断面積は,総義歯Qualityの低下に伴い,有意な減少を認めた.5. 咀嚼筋活動量は,総義歯Qualityの低下に伴い,減少する傾向を示した.以上より,咀嚼筋の形態や機能の低下には義歯のQualityが関与していると考えられ,適切な義歯の装着は咀嚼筋系の健康維持に重要であることが示唆された.

The aging of oral function in dental patients increases the loss of dental teeth, the main factors of the whole body and the artificial relationship between the facial morphology and the Quality of dental teeth. The purpose of this study was to analyze the masticatory muscle cross-sectional area, maximum bite size and muscle electrical activity in general clinical examination items, and the effect of masticatory muscle cross-sectional area, masticatory muscle function and muscle electrical activity on the Quality of general dentists. The quality score of the dental prosthesis was evaluated, and the relationship between masticatory muscle cross-sectional area and muscle function was compared between the high (G1) and low (G2) groups of dental prosthesis quality. MRI device (GE SIGNA) was used to scan the posterior part of the lateral head tendon. After measurement of cross-section area, image analysis device IBAS-2000(manufactured by ZEISS) was used for image analysis. The maximum bite time of the masticatory tendon electric field, the polarization (NEC) system, the use of middle, bite, lateral head tendon anterior, posterior, surface electrode bipolar lead, recording The electric field is in full swing. The following results were obtained from the analysis of the aggregate of the data in the application. 1. The masticatory muscle fracture area is lower than the general dental quality group (G2). Masticatory muscle activity tends to decrease in the lower group (G2) of general dental Quality. The correlation between masticatory muscle fracture area and masticatory muscle activity is high in quality group (G1). The masticatory muscle fracture area is not, the overall dental Quality is low, intentionally reduced. 5. Masticatory muscle activity is associated with a decrease in overall dental Quality. As mentioned above, the morphology and function of masticatory tendons are related to the Quality of teeth, and the installation of appropriate teeth is important for the health maintenance of masticatory tendons.

项目成果

田邊忠輝ほか: "義歯Qualityが総義歯装着者の咀嚼筋断面積の減少に及ぼす因子" 日本補綴歯科学会雑誌. 43・2(掲載予定). (1999)

Tadateru Tanabe 等：“全口义齿佩戴者咀嚼肌横截面积减少的义齿质量因素”，日本修复医学会杂志 43・2（待出版）。