The relationship between the morphology and function of various structures in the maxillofacial in children with malocclusion of deciduous dention

乳牙错牙合儿童颌面部各结构形态与功能的关系

• 批准号: 08457577
• 负责人: AKASAKA Morito
• 金额: $ 0.9万
• 依托单位: Nihon University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08457577/
• 关键词: deciduous dentiton; malocclusion; morphology of the maxillo facial; mandibular movement; anterior cross bite; function of the mastication; 顎口腔系器官; 咀嚼筋活動; 歯の三次元的位置; 混合歯列; 食物物性; チューインガム咀嚼; 歯列形態; 三次元座標; deciduous dentiton; malocclusion; morphology of the maxillo facial; mandibular movement; anterior cross bite; function of the mastication; 顎口腔系器官; 咀嚼筋活動; 歯の三次元的位置; 混合歯列; 食物物性; チューインガム咀嚼; 歯列形態; 三次元座標

For the normal development of occlusion, both the morphology and function of the various structures in the maxillo facial must develop synchronously. There are several reports on the relationship between the type of occlusion, morphology and function of various structures in the maxillo facial in the case of adults with permanent dention ; however, there are no reports in the case of children with deciduous dentition. In this study, we performed a three-dimensional morphological analysis of maxillo facial morphology as well as tooth arrangement in children with normal occlusion and anterior cross bite. The results indicate that the facial patterns of children with anterior cross bite show some distinct characteristics from those of children with normal occlusion. In order to analyze the relationship between the type of occlusion and the masticatiory performance of children with deciduous dentition. The results indicate that the occlusal contact in children with open bite is smaller than that in children with normal occlusion and that the masticatiory performance is poorer in children with open bite and anterior crossbite. There was a positive correlation between the masticatiory performance and the occlusal contact in children with normal occlusion, open bite and deep bite, while no such correlation was found between the two in children with anterior cross bite. Furthermore, electromyograms of the masseter and temporalis muscles of children with deciduous dentition were examined using a simplified technique in order to analyze the activities of the muscles of mastication during sleep. Occiusal contact was observed even in children with temporary teeth during sleep, and synchronous activity of the temporalis and masseter muscles was observed.

为了正常的遮挡发育，上颌面部各种结构的形态和功能都必须同步发展。对于成年人永久发出的成年人，闭塞类型，形态和功能之间的关系之间有几种报告；但是，没有关于落叶牙齿儿童的报道。在这项研究中，我们对正常闭塞和前交叉咬合的儿童进行了三维形态学分析以及牙齿布置。结果表明，前交叉咬合儿童的面部模式与正常闭塞儿童的面部模式显示出一些不同的特征。为了分析遮挡类型与具有落叶牙齿儿童的乳房乳头性能之间的关系。结果表明，张开咬伤儿童的咬合接触小于正常闭塞儿童的咬合接触，并且在张开咬伤和前侧咬的儿童中，乳作性表现较差。正常闭塞，开放咬伤和深咬的儿童的乳胶性表现与咬合接触之间存在正相关，而两者之间在患有前交叉咬合的儿童中没有发现这种相关性。此外，使用一种简化的技术检查了具有落叶牙列儿童的咬肌和颞肌肌肉肌肉肌肉，以分析睡眠期间咀嚼肌肉的活性。即使在睡眠期间牙齿临时牙齿的儿童中也观察到偶有接触，并且观察到颞肌和咬肌的同步活动。