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

在儿童牙科临床中，目的是使牙列的正常生长。对儿童疾病的全面检查和诊断，除了形态学的信息之外，还需要基于功能集合的信息。对于成年患者，已经进行了下颌运动或咀嚼效率的检查，但对于儿童患者，特别是乳牙期的年轻患者，将成人设备应用于儿童，对他们的精神和身体状况来说，负担太大，以至于我们无法获得任何关于儿童的正确数据。因此，发明用于幼儿患者的仪器并建立用于幼儿患者的临床检查系统是长期以来的愿望，我们的项目组开始发明用于幼儿的仪器，可以在3岁后使用，并努力制作原始仪器并多次改进。现在，我们已经能够完成实现我们的目的的设备，并分析正常儿童的下颌运动乳牙列，而且，此外，还功能诊断治疗前后的儿童患者有异常的牙齿，咬合关系和颞下颌关节。并能记录和分析咀嚼肌的肌电，初步建立了幼儿口颌功能的检测系统。虽然有关系统仍有很多问题，但我们在幼儿病人的临床检查及诊断方面，已取得了超乎预期的大量资料。

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.