〔Abstract〕 Objective To evaluate the effect of screw-retained abutment integrated crown and cement-retained in first molar tooth implant restorations. Methods A retrospective study was conducted to select 91 patients. A total of 104 implant restorations were completed, of which 52 were screw-retained abutment integrated crown(SR) and 52 were cement-retained(CR). The data of the patients on the day of implant restoration and 6th and 12th month after teeth were conducted, the bone height of the mesial and distal edges of the implants were measured, the periodontal clinical indexes around the implants and the patient satisfaction score were recorded at the time of reexamination, and the proximal contacts after implant crown restoration was evaluated according to Barnes evaluation standard. Results 6 and 12 months after restoration, the implant retention rate in SR group and CR group was 100%; in the screw retention group, the retention screws of 3 restorations were loosen at 6 months, and the torch force was applied to 35 N/cm; at 12 months after restoration, the qualified rate of proximal contacts in the screw retention group was 90.38%, which was significantly lower than that of 99.04% in the adhesive retention group(P=0.037). There was no difference in marginal bone absorption and periodontal soft tissue indexes mPLI and mSBI between the two groups. Conclusion The two retention methods can both achieve good implant effects, and cement-retained restorations has more advantages in the first molar tooth restoration of proximal contact and the prevention of food impaction.