Videofluorographic study on mastication, swallowing, and tongue movement of shortened dental arch patient

X线电视（视频荧光）是一种有用的设备，通过使用含有造影剂的测试食物在咀嚼的多个阶段进行视觉解释来评估咀嚼功能。本研究旨在探讨单侧可摘局部义齿是否有助于牙弓缩短患者使用该系统的功能。本研究中，单侧牙弓缩短的患者自愿合作。作为目视分析的结果，观察到体积形成问题。咀嚼时部分食物经无义齿的牙弓缺损漏出。2.与戴义齿组相比，无义齿组咀嚼频率增加。这表明，没有假牙的牙弓缩短的患者增加了咀嚼直到吞咽的频率。牙弓的状况可能对咀嚼无效，缩短牙弓（SDA）的概念开始作为治疗的目标之一。戴用义齿的风险大，丧失了舒适性，功能优势少，是SDA的主要原因。但目前对SDA患者咀嚼功能的研究主要集中在咀嚼的挤压能力上，而对容量形成和转运能力的研究较少，从本研究的结果来看，对食物控制的整体动态评价，如容量的形成和转运，可能是评价一个合适的咀嚼功能的必要手段。

X-ray TV (videofluorography) is useful apparatus for evaluating the function of mastication by the visual interpretation in the multiple phase of mastication using test food containing contrast medium. The purpose of this study is to clarify whether unilateral removable partial denture contribute to the function of shortened dental arch patients using this system. In this study unilateral shortened dental arch patients voluntarily cooperated.The results were as follows : 1. As a result of the visual analysis the volus formation trouble was observed. During chewing a part of food leaked through the defect of dental arch without denture. 2. The frequency of chewing increased without denture compared to with wearing denture. This showed that shortened dental arch patients without denture increased the frequency of chewing until swallowing. The condition of the dental arch might be inefficient for mastication.Shortened dental arch (SDA) concept started as one of the goals of treatment. It was the reason for SDA that the risk of wearing denture and sacrifice of comfort and little functional advantage. But these studies about analysis of mastication of SDA patients mainly focused on the crushing ability, and little focused on the volus formation and transportation ability.From the results of this study, it was thought that the dynamic evaluation of food control overall, for example volus formation and transportation, might be necessary to evaluate an appropriate function of mastication.