Maiorana Carlo, Sigurtà Davide, Mirandola Arrigo, Garlini Giuliano, Santoro Franco
Department of Implantology and Periodontology, Dental Clinic ICP, University of Milan, School of Dentistry, Milan, Italy.
Int J Oral Maxillofac Implants. 2006 May-Jun;21(3):426-32.
The clinical and radiologic results of bone substitute application in the sinus elevation procedure were evaluated for up to 4 years after a grafting procedure followed by implant placement.
Between 1997 and 2001, augmentation of the maxillary sinus floor with alloplastic or xenogenic materials was performed in 34 nonsmoking patients with generally good health. However, only 18 patients attended all of the required annual clinical and radiographic examinations and thus were included in the study. Mean follow-up after implantation was 29 months.
At the second-stage surgery all the implants were osseointegrated, except for 1 Frialit-2, which was removed. Following prosthetic rehabilitation no implant was lost after 4 years of function, for a prosthetic success rate of 100%. The cumulative implant survival rate after 48 months was 97% (36 of 37 implants).
Osseointegrated implants are a reliable treatment option for restoring the posterior maxilla, and final predictability was not influenced by their placement in augmented areas after sinus elevation with bone substitutes.
The survival rate obtained with this study is similar to that expected for implants placed in nongrafted areas. This study showed that alloplasts and xenogenic materials are reliable for bone regeneration in the subantral cavities, as they showed very low resorption in the present study.
评估在骨替代材料应用于上颌窦提升术并植入种植体后长达4年的临床和放射学结果。
1997年至2001年期间，对34名健康状况总体良好的非吸烟患者进行了异体材料或异种材料上颌窦底提升术。然而，只有18名患者参加了所有必需的年度临床和影像学检查，因此被纳入研究。植入后的平均随访时间为29个月。
在二期手术时，除1枚被取出的Frialit-2种植体外，所有种植体均实现骨结合。在进行修复性康复治疗后，经过4年的功能使用，没有种植体丢失，修复成功率为100%。48个月后的种植体累积存留率为97%（37枚种植体中的36枚）。
骨结合种植体是恢复上颌后部骨量的可靠治疗选择，在使用骨替代材料进行上颌窦提升后，种植体植入增骨区并不影响最终的可预测性。
本研究获得的存留率与非植骨区种植体的预期存留率相似。本研究表明，异体材料和异种材料在窦下腔骨再生方面是可靠的，因为在本研究中它们显示出非常低的吸收率。
