Abstract: Objective: To investigate the application effect and prognosis of bone graft and tissue engineering scaffold in maxillary sinus lifting oral implant restoration. Methods: Thirty patients with maxillary sinus and oral implants were selected. All of them were treated from May 2016 to May 2017. Bio-Oss collagen was applied as a scaffold for bone grafting and tissue engineering. The effect and prognosis were observed. Results: A total of 30 patients were selected in this study. A total of 34 threaded column implants were implanted. There was no infection and damage of the maxillary sinus mucosa and gingival mucosa. After 6 months of follow-up, X-ray examination and artificial bone fusion of the alveolar bone were ideal, and the implant was effectively combined with the surrounding bone. After an average of 24 months of follow-up, the denture can play a normal role. Conclusion: For patients with clinically treated maxillary sinus eleva-tion for oral implant restoration, Bio-Oss collagen is applied as a bone graft and tissue engineering scaf-fold material. The implant bone combination is ideal, which can avoid loosening and falling off. Satisfacto-ry repair results provide a strong guarantee.

Key words: maxillary sinus augmentation, oral implant restoration, bone graft, tissue engineering scaffold material