A study of process of growth of oral form and oral function by newly developed device

新研制装置研究口腔形态生长过程和口腔功能

基本信息

批准号：
06454587
负责人：
AKASAKA Morito
金额：
$ 3.14万
依托单位：
NIHON UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06454587/
关键词：
Jaw movement oral shape occlusion denition 6 degrees of freedom 下顎運動

项目摘要

Mandibular movements are often used as indices of the functioning of the stomatognathic system. The conventional divisions are habitual chewing movement, slide movement and border movement. The mandibular border movement may be restricted by bone, mandibular articulation, the neurotransmission system for muscles, ligaments or other soft tissues of the stomatognathic system. This system is immature in children, so some difference is expected between the movements of children and adults and between each occlusal developmental stage.The ranges of back and forth, right and left and upper and lower movements of mandibular incisal points and the mandibular rotary ranges were measured in six boys and six girls in the deciduous dental arrangement stage, six boys and six girls in the mixed dental arrangement stage, and six boys and six girls in the permanent dental arrangement stage, using the six degrees of freedom for mandibular movement previously developed by the authors. Differences between sexes and between the dental arrangement stages were compared and the following conclusions made :1. In dental arrangement stages for boys, no differences were observed in the back and forth or frontal rotary ranges between the deciduous and mixed arrangement stages. For girls, the ranges of incisal point movements were greater in the mixed than in the deciduous dental arrangement stage and in the permanent than the mixed arrangement stage.

下颌运动通常被用作气孔系统功能的指标。传统的划分是习惯性咀嚼运动，滑动运动和边界运动。下颌边界运动可能受到骨骼，下颌铰接，肌肉，韧带或其他软骨系统的其他软组织的神经传递系统的限制。该系统在儿童中不成熟，因此，儿童和成人的运动以及每个咬合发育阶段之间的运动有所不同。在落叶牙科安排阶段中以六个男孩和六个女孩的身份进行测量，六个男孩和六个女孩在混合牙科安排阶段，六个男孩和六个在永久性牙科安排阶段的男孩和六个女孩，以前使用六个自由度由作者开发。比较了性别之间的差异以及牙齿布置阶段，并得出以下结论：1。在男孩的牙科排列阶段中，在落叶和混合排列阶段之间的来回或额叶旋转范围内没有观察到差异。对于女孩来说，在混合物中，切口点运动的范围要比落叶牙科排列阶段和永久性阶段要大于混合布置阶段。