The Development of Recording Apparatus of Mandibular Movement in Young Children using Light Position Detector.

在儿童牙科诊所中，目标是实现牙列的正常生长。除了形态学信息外，还越来越需要基于功能性信息集对儿童患者进行全面检查和诊断。对于成人患者来说，下颌运动或咀嚼效率的检查已经进行了，但对于儿童患者，特别是乳牙列的年轻患者，将成人的设备应用于儿童，对他们的精神和身体状况造成了很大的负担，以至于我们无法获得有关儿童的正确数据。因此，发明针对幼儿患者的仪器并建立临床检查系统是我们长期以来的愿望。我们的项目组从发明3岁以后就可以使用的幼儿仪器开始，并多次努力制造和改进原始仪器。现在，我们已经能够完成我们的目的，不仅可以分析正常乳牙列儿童的下颌运动，而且还可以对治疗前后牙列、咬合关系和颞下颌关节异常的儿童患者进行功能诊断。我们还能够记录和分析咀嚼肌的肌电图，现在，我们可以建立幼儿口颌功能的检查系统。该系统还存在很多问题，但对于幼儿患者的临床检查和诊断，我们已经获得了超出预期的大量信息。

In Pedodontic clinic,the aim is to bring about the normal growth of dentition. There has been an increasing need for comprehensive examination and diagnosis for child patient that are based on the functional apset of information in addition to the morphological one. For adult patients, the examination on the mandibular movement or the chewing efficiency has been already practiced,but for child patients, especially younger patients with deciduous dentition, it has been so much burden to them, against their mental and physical condition, to apply the apparatus for adults to children that we can not obtain any correct data concerning children. So the invention of apparatus and the establishment of clinical examination system for young child patient has long been desired.Our project team started inventing the apparatus for young children,which can be used after 3 years of age, and have efforted to make the original apparatus and improved it many times. Now, we have been able to complete the apparatus carrying out our purpose,and to analyze the mandibular movement of normal children with deciduous dentition, and, moreover, also to diagnose child patients functionally before and after treatment who have anomalies about their dentition,interocclusal relation and temporomandibular joint. We are also able to record and to analyze the electromyogrm of masticatory muscles, and now, we could establish the examination system of stomatognathic function of young children. There are many problems concerning the system yet, but we have obtained a large amount of information beyond expectation as to the clinical examination and diagnosis of young child patients.