Objective: To investigate the influence of digital chair-side computer aided design/computer aided manufacturing (CAD/CAM) technology on the edge fit of implanted crown and bridge restoration. Methods: A total of 120 patients who had completed 2 to 3 implants and needed to perform crown and bridge restoration in our hospital from February 2019 to February 2021 were selected as the research subjects. According to the random number table method, they were divided into group A and group B, each group with 60 cases. Traditional impression technology was used for group A, and digital chairside CAD/CAM technology was used for group B. After 1, 6, 12 months, the restoration status, restoration gingival index (GI), sulcus bleeding index (SBI), and edge fit of the restoration were compared between the 2 groups. Results: After 1, 6, and 12 months, the edge tightness, integrity and adjacency tightness of group B were significantly higher than those of group A, with statistical significance (all P<0.05). After 1, 6, and 12 months, GI index and SBI index of group B were significantly lower than those of group A, with statistical significance (all P<0.05). After 1, 6, and 12 months, the distances from the surface of the repaired body to A1, A2, A3, A4, and A5 in group B were significantly smaller than those in group A, with statistical significance (all P<0.05). Conclusion: After the application of digital chairside CAD/CAM technology in implant crown and bridge restoration, the restoration is in good condition and has good edge tightness.