颞颌关节前脱位临床上较为常见,多由于大笑或打哈欠时张口过大,髁状突向前滑动越过关节结节最高点,不能自动退回下颌凹所致。常见有双侧脱位,亦有单侧脱位。脱位时患者呈张口状,不能闭嘴,口涎外溢。双侧脱位时颏部前伸突出于正前方;单侧脱位时,颏部也向前突出,但偏向健侧,在脱位侧耳前方呈凹陷状。颞颌关节前脱位,口内复位法有多种,不足处是术者两拇指伸入患者口内易引起患者 Temporomandibular joint anterior dislocation clinically more common, mostly due to laugh or yawn when the mouth is too large, the forward sliding of the condyle over the highest point of joint nodules, can not automatically return due to the mandibular concave. Common bilateral dislocation, but also unilateral dislocation. Dislocation was mouth-shaped patients, can not shut up, oral salivary overflow. Protrusion of the chin during bilateral dislocation protruding in front; Unilateral dislocation, the chin is also protruding forward, but biased toward the contralateral side, in front of dislocation of the ear was concave. Temporomandibular joint anterior dislocation, a variety of oral repositioning method, the inadequacies of the surgeon two thumbs into the patient's mouth can easily lead to patients