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移植不带牙根的异体颌骨修复下颌骨缺损,由于移植骨牙槽缘吸收,不能形成牙槽嵴,不利于义齿修复。为修复牙槽嵴,用带牙根的异体颌骨移植进行动物试验。 材料和方法 用40只成年狗作实验,在下颌第4,5磨牙区造成3cm×1cm颌骨缺损,随后植入贮存的带第3,4磨牙牙根的同种异体骨块。按骨块贮存方法分3组,第1组20只狗,移植骨块贮存在0.5％福尔马林液内。第2组10只狗,移植骨块用2,4 N盐酸进行
Transplantation of non-rooted allogeneic mandible to repair mandibular defects, due to the absorption of the alveolar edge of the graft bone, can not form alveolar ridges, is not conducive to denture repair. To repair the alveolar ridge, an autologous jugular autografting with a root was used for animal experiments. MATERIALS AND METHODS Using 40 adult dogs as an experiment, a 3 cm × 1 cm jaw defect was created in the mandibular fourth and fifth molar sites, and subsequently the stored allograft bone with the third and fourth molar roots was implanted. According to the method of bone storage, the rats were divided into three groups. The first group consisted of 20 dogs. The bone graft was stored in 0.5% formalin solution. The second group of 10 dogs, bone graft with 2,4 N hydrochloric acid