Simion M, Baldoni M, Zaffe D
University of Milan, School of Dentistry, Italy.
Int J Periodontics Restorative Dent. 1992;12(6):462-73.
Five patients with sufficient vertical bone height but insufficient bone width for implant placement were chosen for treatment with a split-crest technique combined with guided tissue regeneration. The surgical technique involved splitting the alveolar ridge longitudinally in two parts, provoking a greenstick fracture. A chisel was then used to make a fine cut and spread apart the two cortical plates. Implants were then placed. Implants and defects were covered with expanded polytetrafluoroethylene membranes. Biometrical examination showed a gain in bone width, varying between 1 and 4 mm; maxillary sites showed greater ridge enlargement. Histologic examination showed regeneration of bone tissue between the two portions of the split crest. This membrane technique could be effective and predictable for horizontal ridge augmentation associated with immediate implant placement.
选择了5例垂直骨高度足够但骨宽度不足以植入种植体的患者，采用嵴劈开技术联合引导组织再生进行治疗。手术技术包括将牙槽嵴纵向劈成两部分，造成青枝骨折。然后用凿子进行精细切割并分开两块皮质骨板。随后植入种植体。种植体和缺损处用膨体聚四氟乙烯膜覆盖。生物测量检查显示骨宽度增加，在1至4毫米之间变化；上颌部位的牙槽嵴增宽更明显。组织学检查显示劈开嵴的两部分之间有骨组织再生。这种膜技术对于与即刻种植相关的水平牙槽嵴增高可能是有效且可预测的。
