同种异体冻干骨颗粒在上颌窦提升牙种植术中的临床应用

目的：探讨同种异体冻干骨颗粒在上颌窦提升延期或同期种植中的效果。方法：18例上颌牙列缺损,上颌窦底骨量不足,需要行上颌窦底提升植骨的临床病例,其中,5例上颌窦底高度小于5 mm,采用上颌窦开放式提升植骨术,术后9～12月进行延期种植体植入术,6个月后进行冠修复负重;3例介于5～8 mm,上颌窦开放式提升后植骨,同期植入种植体,9个月后行冠修复负重;10例高度在8～12 mm的病例采用上颌窦闭合式提升术（冲顶术）植入冻干骨颗粒,同期植入种植体,6个月后冠修复负重;所有病例均没有即刻负重。结果：所有病例在安装上部结构时骨质有轻微吸收,但种植体牢固,安装上部结构顺利。冠修复后观察最长32个月,患者能按时复查,没有种植体松动,脱落情况发生,效果较好。结论：使用同种异体冻干骨作为上颌窦底提升牙种植的植骨材料同样适用,效果好。

Clinical study of bone-grafting in dental implant with freeze drying homogeneity bone grains

Objective：To evaluate bone grafting effects of freeze drying homogeneity bone grains in maxillary sinus lift with dental implant.Method：18 cases maxillary alveolar bone defecets patients were underwent freeze drying homogeneity bone grains grafting and dental impanting.8 cases were underwent opening maxillary sinus lift,include 5 cases alveolar height less than 5mm,defering 9～12 months underwent dental implanting and crown repairing after 6 months;3 cases alveolar height between 5～8 mm,dental implants were inserted instantly,crowns repairing after 9 months.10 cases closed form maxillary sinus lift and dental implanting instantly were underwent.Result：No evident complications happened.There were the excellent results in all the cases.Conclusion：although BIOSS is admitted as best substitution materials,but freeze drying homogeneity bone grains also is a suitable substitution in maxillary sinus In opening maxillary sinus lift.