RESULTS: There were no implants loose or lost;X ray examination showed well osseointegration and no maxillary sinusitis.All the patients finished implant prosthesis in 6 months postoperatively.

• 结果：无种植体松动、脱落及上颌窦炎发生，X线检查种植体与周围组织均形成良好的骨性结合，术后6个月完成义齿修复。