Restoration of occlusal support and its relation to masticatory performance

咬合支持的恢复及其与咀嚼性能的关系

• 批准号: 10671849
• 负责人: IGARASHI Yoshimasa
• 金额: $ 1.15万
• 依托单位: Matsumoto Dental 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-10671849/
• 关键词: partially dentate patients; posterior occlusal support; masticatory performance; Bonwill triangle; jaw tracking system; biting force; condylar heads (condyles); ATP analyzer; 欠損歯列; 補綴処置

The aim of the restoration of partially dentate patients has oriented to the normal healthy dentition with 28 teeth. However, Kayser and Kalk of the Netherland recently advocated new idea against to above conventional one. That is ; Human mandible will not displace to the level of initiating any of the pathological changes if the posterior occlusal supports are maintained at least to the second premolar contacts for the normal jaw function and masticatory performance especially in the old individuals.In this present study, we wished to assess above two diverse theories for our clinical diagnostic base. Number of volunteers who needed the restoration of posterior occlusal surface contacts in both premolars and molars with fixed restorations joined to the investigation. Three dimensional changes of the jaw relationships before and after removing the posterior restorations in turn at every maximal clenching were recorded. Displacements of the Bonwill triangle were recorded by the jaw trac … More king system (MMJI-II SHOFU-Co. Japan). Biting force was recorded at every condition by computorized bite-force meter (Occluzer GC-Co JAPAN). Though, results in every individual differed to some extent, it was pointed out as a whole that according to progressive loss of the posterior occlusal supports, both condylar heads (condyle) moved from upward and forward directions. This tendency increased gradually according to the successive loss of posterior occlusal contacts. Biting force reduced in every individual according to the loss of posterior occlusal contacts.We concluded that in individuals with reduced posterior occlusal contacts, the displacement of the mandible would take place even with small occlusal force like habitual clenching without posterior prostheses against normal individuals. We tried to use the ATP analyzer for assessing individual masticatory performances. We have to continue the investigation of this problem for further evidence in prosthetic rehabilitation for partially dentate patients with EBM basis. Less

部分牙列缺失患者的修复目标已定位于28颗正常健康牙列。然而，最近，德国的凯泽和卡尔克提出了新的观点来反对传统的观点。也就是说，在本研究中，我们对上述两种不同的理论进行了评价，以作为我们临床诊断的依据。研究对象为前磨牙及磨牙固定修复后牙面接触需要修复的志愿者。在每次最大咬合时，依次记录去除后牙弓前后颌骨关系的三维变化。Bonwill三角的位移由颌部轨迹记录 ...更多信息 王系统（MMJI-II SHOFU-Co.日本）。通过计算机化咬合力计（Occluzer GC-Co JAPAN）记录每种条件下的咬合力。虽然每个人的结果有一定的差异，但总体上指出，根据后咬合支持的逐渐丧失，两个髁状突头（髁状突）从向上和向前的方向移动。随着后牙接触的逐渐丧失，这种趋势逐渐增强。根据后牙咬合接触的丧失，每个个体的咬合力都有所降低，我们得出结论，在后牙咬合接触减少的个体中，即使咬合力很小，也会发生下颌骨的位移，就像正常个体在没有后牙修复的情况下习惯性咬牙一样。我们尝试使用ATP分析仪来评估个体的咀嚼性能。我们必须继续调查这个问题，为进一步的证据，在修复部分牙列患者的循证医学基础。少

项目成果

野首孝祠,五十嵐順正,根本昭二,木村義孝,河野正司,小林義典,平井敏博,山口敏雄,渡辺誠: "咀嚼機能の客観的評価とそのデータベース構築"日本歯科医学会誌. 18. 75-86 (1999)

Takashi Nokubi、Junmasa Igarashi、Shoji Nemoto、Yoshitaka Kimura、Masashi Kono、Yoshinori Kobayashi、Toshihiro Hirai、Toshio Yamaguchi、Makoto Watanabe：“咀嚼功能的客观评价及其数据库构建”日本牙科协会杂志 18。 75-86。 (1999)

Y.Igarashi,A,Ogata,A.Kuroiwa,C.H.Wang: "Stress Distribution and Abutment tooth mobiltyot distal-ext RPD."Journal of Oral Rehabilitation. 26. 111-116 (1999)

Y.Igarashi,A,Ogata,A.Kuroiwa,C.H.Wang：“应力分布和基牙移动远端远端 RPD。”口腔康复杂志。

Y.Igarashi, A.Ogata, A.Kuroiwa, C-H Wang: "Stress distribution and abutment tooth mobility of distal extension removable partial dentures with different retainers : an in vivo study"J.Oral Rehabilit. 26. 111-116 (1999)

Y.Igarashi、A.Ogata、A.Kuroiwa、C-H Wang：“具有不同保持器的远端可摘局部义齿的应力分布和基牙移动性：一项体内研究”J.Oral Rehabilit。

Y.Igarashi, S.Yamashita, A.Kuroiwa: "Changes in Interarch Distance and Condylar Position related to loss of Occlusion"Eur. J. Prosthodont. Rest. Dent.. 17(4). 107-111 (2000)

Y.Igarashi、S.Yamashita、A.Kuroiwa：“与咬合丧失相关的牙弓间距离和髁突位置的变化”Eur。

野首孝祠・五十嵐順正: "現代のパーシャルデンチャー・欠損補綴の臨床指針"クインテッセンス出版・東京. 178 (2000)

Takashi Nokubi 和 Junmasa Igarashi：“现代局部义齿和缺陷修复的临床指南”Quintessence Publishing，东京 178 (2000)。