Regulation of occlusal force due to hardness-change of the bite object

由于咬合物体的硬度变化而调节咬合力

• 批准号: 16591959
• 负责人: YAMABE Yoshihisa
• 金额: $ 1.54万
• 依托单位: Nagasaki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16591959/
• 关键词: Hardness of bite object; Occlusal Force; Mandibular kinesiograph; Motor control; Jaw gape; タッピング力

First, we investigated the modulation of occlusal force to unexpected changes in the occlusal vertical dimension. Using a device to change the vertical jaw closing position, eight healthy subjects were instructed to perform repetitive jaw open-close movements with constant occlusal force. The peak occlusal force was greater in the first trial than that in the second or third trial after increase in the vertical jaw closing position, but it was smaller in the first trial than in the second trial after a decrease in the vertical jaw closing position. The results indicate that this modulation appears to be almost completed in first two or three trials after change in the vertical jaw closing position (Tanaka et al. 2006).Next, we analyzed the control of occlusal force by experimentally reproducing situations in which the hardness of food changed unpredictably during mastication. Seven healthy subjects were instructed to perform repetitive jaw open-close movements and to maintain constant occlusal force throughout the trial. Peak occlusal force and impulse were significantly affected by the change in hardness, while an increase in hardness caused increase in the values for peak occlusal force and impulse against the instruction, after which those values remained constant while the subjects occlude the same level of hardness. These results indicate that the level of the resulting occlusal force is regulated automatically according to the hardness of the chewed food. We concluded that occlusal force was adopted for efficient mastication when the hardness the hardness of food changes unpredictably (Shimada et al. in press).

首先，我们研究了咬合力对咬合垂直尺寸意外变化的调制。使用一种装置来改变垂直的颌骨闭合位置，8名健康受试者被指示进行重复的颌骨开合运动，恒定的咬合力。增加垂直合颌位后，第一次试验的峰值咬合力大于第二次或第三次试验，但减少垂直合颌位后，第一次试验的峰值咬合力小于第二次试验。结果表明，在改变垂直颌闭合位置后的前两次或三次试验中，这种调制似乎几乎完成（Tanaka et al. 2006）。接下来，我们通过实验再现在咀嚼过程中食物硬度发生不可预测变化的情况，分析咬合力的控制。7名健康受试者被指示进行重复的下颌开合运动，并在整个试验过程中保持恒定的咬合力。峰值咬合力和冲量的显着影响的硬度的变化，而硬度的增加引起的峰值咬合力和冲量的值增加对指令，之后这些值保持不变，而受试者闭塞相同的硬度水平。这些结果表明，根据咀嚼食物的硬度自动调节咬合力的水平。我们的结论是，当食物的硬度发生不可预测的变化时，咬合力是有效咀嚼的关键。

项目成果

Modulation of jaw tapping force in response to unexpected changes in vertical jaw position

调整夹爪攻丝力以响应垂直夹爪位置的意外变化

• 发表时间: 2006
• 期刊: International Chinese Journal of Dentistry 6(in press)
• 作者: Mihoko Tanaka;Tetsurou Torisu;Kazuko Noguchi;Yoshihisa Yamabe;Hiroyuki Fujii
• 通讯作者: Hiroyuki Fujii

咬合硬度物質の予測できない変化が下顎タッピング力に与える影響

咬合硬度不可预测的变化对下颌攻牙力的影响

• 发表时间: 2005
• 期刊: 日本補綴歯科学会雑誌 49・113回特別号
• 作者: Matono;Y.;Nakagawa;M.et al.;K.Udoh;島田 明子 他研究代表者を含む7名
• 通讯作者: 島田 明子 他研究代表者を含む7名

Automatic regulation of occlusal force due to hardness-change of the bite object

根据咬合物体的硬度变化自动调节咬合力

• 发表时间: 2007
• 期刊: Journal of Oral rehabilitation (in press)
• 作者: Akiko Shimada;Mihoko Tanaka;Rika Kanaoka;Kazuko Noguchi;Tetsurou Torisu;Yoshihisa Yamabe;Hiroyuki Fujii;Hiroshi Murata
• 通讯作者: Hiroshi Murata

下顎タッピング運動時における咬合物質硬度可変装置の試作-予測できない硬度変化に対するタッピング力調節の解析のために-

原型生产用于在下颌攻牙运动期间改变咬合材料硬度的装置 - 用于分析攻牙力调整以响应不可预测的硬度变化 -

• 发表时间: 2004
• 期刊: 日本補綴歯科学会雑誌 48・112回特別号
• 作者: Munar;M.;Udoh;K.;Ishikawa;K.;Matsuya;S.;Nakagawa;M.;島田 明子 他研究代表者を含む7名
• 通讯作者: 島田 明子 他研究代表者を含む7名