Department of Oral and Maxillofacial Surgery, Sodersjukhuset, Stockholm, Sweden.
Int J Oral Maxillofac Implants. 2009 Nov-Dec;24(6):1144-8.
The present report describes the oral rehabilitation of a female patient suffering from type III osteogenesis imperfecta. Agenesis of the mandibular anterior teeth and malocclusion caused partly by heavily worn teeth made dental rehabilitation necessary. Before a decision to use implants following a grafting procedure, the osseointegration of microimplants was tested. After 4 and 12 months, bone plugs containing two microimplants were retrieved from the patient. Histologic evaluation showed very sparse/poor osseointegration, and the healing time seemed to be much longer than normal. A decision was made to use the "tent-pole" procedure described by Marx et al, followed by prolonged healing. Surgery was uneventful, and the patient was provided with four implants that were partly covered with bone obtained from the iliac crest. Platelet-rich plasma was used to accelerate bone healing. After 9 months, the implants were uncovered and the prosthetic construction was completed. The implant-supported metal-ceramic restoration was serving well at the 1-year and 3-year follow-ups. Minimal resorption of marginal bone was detected during the first year.
本报告描述了一位患有 III 型成骨不全症的女性患者的口腔修复情况。下颌前牙缺失和部分因牙齿重度磨损引起的错合畸形需要进行牙齿修复。在决定使用种植体之前，进行了微种植体骨整合的测试。在 4 个月和 12 个月时，从患者体内取出含有两个微种植体的骨栓。组织学评估显示骨整合非常稀疏/不良，愈合时间似乎比正常情况长得多。决定采用 Marx 等人描述的“帐篷杆”技术，然后进行长时间的愈合。手术过程顺利，为患者提供了四个部分覆盖有取自髂嵴的骨的种植体。使用富血小板血浆加速骨愈合。9 个月后，种植体被暴露，完成了修复体的制作。植入物支持的金属陶瓷修复体在 1 年和 3 年的随访中表现良好。在第一年检测到边缘骨的微小吸收。
