论文部分内容阅读
利用Ｘ线动态录相。计算机图像处理系统，对３３名正常成人（男１７名，女１６名）和２９名成人骨性ＡｎｇｌｅＩＩＩ类错患者（男１４人，女１５人）的吞咽型进行了研究。结果表明：①成人骨性ＡｎｇｌｅＩＩＩ类错患者息止颌位时，舌、舌骨、下颌骨位置均较正常错者低，唇分开度和磨牙分开度较大。吞咽时舌尖在上抬的同时向后缩，形成典型的舌后缩吞咽型。多数患者磨牙没有咬合接触，上下唇分开。②成人骨性ＡｎｇｌｅＩＩＩ类错患者异常的吞咽型是对骨骼结构异常的适应性改变，而持久的异常吞咽型又可改变牙槽结构，使上下切牙轴倾度发生变化。
Use X-ray dynamic video. Computer image processing system was used to study the swallowing patterns of 33 normal adults (17 males and 16 females) and 29 adults with Angle Class III malformations (14 males and 15 females). The results showed that: (1) In patients with skeletal Class III malocclusion, the positions of tongue, hyoid bone and mandible were lower than those of the normal ones, and the degrees of separation of the lip and molars were greater. When swallowing the tip of the tongue in the lift back at the same time, forming a typical tongue swallow swallow type. Most patients with molars without occlusal contact, the upper and lower lips separated. (2) The abnormal swallowing type in adults with skeletal Class III malocclusion is an adaptive change to skeletal structure abnormalities, while the long-lasting anomalous swallowing type can change the structure of the alveolus so that the inclination of upper and lower incisors changes.