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

在牙科诊所，目的是使牙齿正常生长。对儿童患者进行除形态学信息外，基于功能信息集的综合检查和诊断的需求日益增加。对于成人患者，对下颌运动或咀嚼效率的检查已经有实践，但对于儿童患者，特别是年龄较小的乳牙患者，将成人仪器应用于儿童，违背他们的精神和身体状况，给他们带来了很大的负担，我们无法获得任何关于儿童的正确数据。因此，为幼儿患者发明仪器和建立临床检查系统一直是人们的愿望。我们的项目组从发明3岁以后就可以使用的幼儿器械开始，并在原有的器械基础上进行了多次的努力和改进。目前，我们已经完成了实现我们目的的仪器，可以对正常乳牙列儿童的下颌运动进行分析，还可以对治疗前后牙列、咬合关系、颞下颌关节等方面有异常的儿童患者进行功能诊断。我们还可以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。虽然目前系统还存在很多问题，但对于幼儿患者的临床检查和诊断，我们已经获得了大量超出预期的信息。

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.