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三、下颌骨骨折:下颌骨为构成面下部及两侧主要支架,是一块游离骨。仅靠颞下颌关节和韧带与两侧颅底相连,因其位置突出,体积最大,平战时骨折发生率均较高。骨折部位容易在颌骨解剖结构上的薄弱区发生。下颌骨有强有力的咀嚼肌群附丽,外伤后肌肉的牵拉力量可促使骨折段发生不同方向移位,加上骨折线方向,骨折片斜面,骨折端有无牙齿存在,骨质缺损的范围与位置等各种因素,下颌骨骨折的治疗,一
Third, the mandibular fracture: the mandible to form the lower part of the face and both sides of the main stent is a free bone. Only the temporomandibular joint and ligaments were connected with skull base on both sides, because of its prominent position, the largest volume, the incidence of fractures during peacetime were higher. Fracture sites easily occur in the weakened area of the anatomy of the jaw. Mandible with a strong chewing muscle attached to Li, traumatic muscle traction can promote fracture of the fracture occurred in different directions, together with the direction of the fracture line, the fracture surface of the bevel, the presence or absence of teeth at the fracture, the scope of bone defects With various factors such as location and treatment of mandibular fractures, one