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开口障碍是口腔外科常见症状之一,为了充分开口,需要开口肌收缩和闭口肌伸展。作者对健康人开口时肌肉伸展、收缩变化进行了研究。 正常咬合的健康人16例(男5例,女11例),分别行最大开口、中等度开口、轻度开口和咬合时侧位头部X线照片,然后对照片上各定位点进行测量。结果发现,最大开口域男女分别为41～65mm和39～50mm,平均分别为52.6±8.02mm和44.0±3.71mm,下颌头运动分别为22～27mm和16～26mm,平均各为24.6±
Open obstacle is one of the common symptoms of oral surgery, in order to fully open, the need for open muscle contraction and closed muscle extension. The author of healthy people open muscle contraction, contraction and change were studied. Normal occlusion of healthy people in 16 cases (5 males and 11 females), respectively, the largest open, moderate openings, mild openings and bite when the lateral head X-ray photographs, and then the photos of the various sites were measured. The results showed that the maximum open area male and female were 41 ~ 65mm and 39 ~ 50mm, respectively, an average of 52.6 ± 8.02mm and 44.0 ± 3.71mm, respectively, the mandibular movement of 22 ~ 27mm and 16 ~ 26mm, an average of 24.6 ±