Abstract：
The purpose of this study was to evaluate, using clinical and radiological assessments, the stability of dental implants 5 years after maxillary sinus floor augmentation with octacalcium phosphate-collagen composite (OCP/Col). Maxillary sinus floor augmentation was performed through a lateral window approach. Depending on the height of the host bone, a simultaneous approach (≥5 mm) or a staged approach (less than 5 mm) was employed. The primary outcome was the evaluation of clinical dental implant conditions such as infection, peri-implantitis, dental implant stability, pain, and paresthesia. Secondary outcomes were the evaluation of the augmented bone volume, change rate of augmented bone volume, vertical bone height, and marginal bone loss around dental implant fixture. The conditions of all dental implants were uneventful throughout the follow-up period. Augmented bone volume and changing rate of augmented bone volume were essentially unchanged following maturation of the OCP/Col-derived new bone. The change rate of new bone volume was 21.9% in the simulated approach and 16.8% in the staged approach at 1 year and 5 years postoperatively. The reduction rate in vertical bone height was 7.1% in the simultaneous approach and 7.5% in the staged approach between 1 year and 5 years postoperatively. Mean marginal bone loss was 1.76 mm with the simultaneous approach, and 0.50 mm with the staged approach at 5 years postoperatively. In conclusion, the success of dental implants 5 years after sinus floor augmentation by OCP/Col implantation was clarified by both clinical and radiological evaluations.
摘要：
这项研究的目的是评估，使用临床和放射学评估，磷酸八钙-胶原复合材料（OCP/Col）在上颌窦底增强后5年种植牙的稳定性。通过侧窗方法进行上颌窦底增强。根据宿主骨骼的高度，采用同时入路(≥5mm)或分阶段入路(小于5mm).主要结果是评估临床种植牙的情况，如感染，种植体周围炎,牙种植体稳定性,疼痛,和感觉异常.次要结果是评估增加的骨体积，骨体积增大的变化率，垂直骨高度,和牙种植体固定装置周围的边缘骨质流失。在整个随访期间，所有牙种植体的状况都很顺利。OCP/Col衍生的新骨成熟后，增加的骨体积和增加的骨体积的变化率基本不变。术后1年和5年，模拟入路的新骨体积变化率为21.9％，分期入路的新骨体积变化率为16.8％。术后1年至5年，同时入路垂直骨高度降低率为7.1％，分期入路为7.5％。同时入路的平均边缘骨丢失为1.76mm，术后5年分期入路0.50mm。总之,通过临床和放射学评估均阐明了OCP/Col植入鼻窦底增强术后5年种植牙的成功.
