van der Mark Ewoud L, Bierenbroodspot Frank, Baas Erik M, de Lange Jan
Department of Oral and Maxillofacial Surgery, Isala Clinics, GK Zwolle, The Netherlands.
Br J Oral Maxillofac Surg. 2011 Apr;49(3):198-202. doi: 10.1016/j.bjoms.2010.03.001. Epub 2010 Apr 18.
We have evaluated the survival of dental implants in extremely atrophic edentulous maxillas after autogenous bone grafting. We compared two techniques: the Le Fort I down-grafting procedure and conventional raising of the sinus floor with onlay bone grafting. Twenty-seven consecutive patients had their atrophic maxillas reconstructed, 10 of whom were treated with a Le Fort I osteotomy with down-grafting and interpositioning of bone, and 17 by raising the sinus floor and onlay grafts. All implants were placed 5-6 months after grafting. There was no difference in the survival of implants between the two groups. The choice of grafting technique will therefore be based primarily on the interarch relations and the need for soft tissue support.
我们评估了自体骨移植后极度萎缩无牙上颌骨中牙种植体的存活率。我们比较了两种技术：Le Fort I下植骨手术和传统的上颌窦底提升并植骨术。连续27例患者的萎缩上颌骨得到重建，其中10例采用Le Fort I截骨术并下植骨和植入骨块，17例采用上颌窦底提升和植骨术。所有种植体均在植骨后5 - 6个月植入。两组之间种植体的存活率没有差异。因此，植骨技术的选择将主要基于牙弓间关系和软组织支持的需求。
