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小儿下颌骨骨折,因咬(牙合)不稳定,乳牙列及牙未完全萌出,支抗不足,用常规颌间固定方法较为困难。著者采用Von Otten颌间固定法治疗小儿下颌骨骨折,取得了较满意的效果。材料和方法直径1.5mm,长10mm的小型皮质骨螺丝钉2颗,0.8mm的不锈钢丝2根。把钢丝一端弯成钩状,另一端弯成正好和螺丝吻合的圆圈,其长度分别为从前鼻棘到上中切牙切缘及从颏结节到下中切牙切缘的距离。在上下颌牙的正中唇侧进行局部麻醉,从龈沟处纵形切开约10mm,充分骨膜下剥离,上颌至前鼻棘,下
Pediatric mandibular fractures, due to bite (occlusal) instability, primary teeth and teeth are not fully eruption, inadequate support, with conventional intermaxillary fixation is more difficult. The authors used Von Otten intermaxillary fixation in children with mandibular fractures, and achieved satisfactory results. MATERIALS AND METHODS Two small cortical bone screws 1.5mm in diameter and 10mm in length, and two stainless steel wires 0.8mm in diameter. One end of the wire is bent into a hook shape and the other end is bent into a circle exactly matching with the screw. The lengths of the wire are respectively from the anterior nasal spine to the incisal edge of the upper incisor and the distance from the chin nodule to the incisal edge of the lower incisor. Local anesthesia was performed on the median labial mandibular tooth, about 10 mm longitudinally from the gingival sulcus, fully subperiosteally dissected, maxillary to anterior nasal spine, under