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下颌骨骨折时,咀嚼肌状态的研究不仅在理论上,而且在实际上也是有意义的,这是因为该部位的骨骼-肌肉组织结构的改建,在很大程度上对治疗后咀嚼功能的恢复有所影响。在文献上尚未见到应用电镜来研究下颌骨骨折夹板固定时,功能低下的咀嚼肌群形态改变的报告。材料及方法研究了15例男性者嚼肌和翼内肌的活检标本。年龄为20～34岁,咬合正常,单侧和双侧下颌角部骨折,夹板固定之后2～24天在骨折线范围以外取材活检。并于偶然意外创伤而死亡的相似年龄和性别
The study of masticatory muscle status in mandibular fractures is not only theoretically but also practically significant because the reconstruction of the skeletal-muscular tissue structures at this site largely restores post-treatment masticatory function Have an impact. In the literature has not yet seen the application of electron microscopy to study mandibular fracture splint, the dysfunction of the masticatory muscle morphology changes report. Materials and Methods Biopsy specimens of the masseter muscle and the pterygoid muscle of 15 males were studied. Age 20 to 34 years old, normal bite, unilateral and bilateral mandibular angle fractures, 2 to 24 days after splint fixation in the range of the fracture line drawn biopsy. Similar age and gender who died of accidental trauma