x-ray研究开合患者吞咽的舌移动和鼻咽闭合.pdfVIP

Original Article A Cineradiographic Study of Deglutitive Tongue Movement and Nasopharyngeal Closure in Patients with Anterior Open Bite a b Tatsuya Fujiki, DDS, PhD ; Teruko Takano-Yamamoto, DDS, PhD ; Haruhiro Noguchi, DDS, PhDa a ; Takashi Yamashiro, DDS, PhD ; Guoqiang Guan, DDS, PhDc ; Keiji Tanimoto, DDS, PhDd Abstract: The purpose of this study was to investigate the movement of the tip and the dorsal surface of the tongue during deglutition in patients with anterior open bite using cineradiography. The subjects were 10 female patients with anterior open bites and 10 female controls with normal overbites. By cine- radiography we established 7 stages of tongue movement and bolus position during deglutition and ana- lyzed the tongue position, tongue movement and the time. The tongue-tip position was more protrusive during deglutition in anterior open bite than in the controls. After the head of the bolus arrived at the opening of the esophagus, the rear part of the dorsal surface of the tongue demonstrated slower movement in patients with anterior open bite than in controls. The nasopharynx closed earlier in patients with anterior open bite than in controls. It is suggested that anterior open bite patients had compensatory coordination of tongue movement, soft palate movement and pharyngeal constrictor muscle activity during deglutition.