Objective: Analysis of the clinical application differences between digital oral scanning impression technology and traditional silicone rubber impression technology in the restoration of oral fixed dentures.Method:A total of 80 cases of dental defects and dental arch defects requiring fixed denture restoration treatment received by our department from March to September 2025 were selected as the research sample. Random number table method was used to perform 1:1 grouping (n=40), with the control group using traditional clinical conventional restoration impression scheme, and the observation group using oral digital intraoral scanning impression technology to complete restoration and data collection. The clinical efficacy comparison between the two groups mainly focuses on indicators related to clinical modeling operation, accuracy of prosthesis adaptation, overall clinical efficacy of restorative treatment, and the occurrence of postoperative complications.Results Compared with the control group, the observation group showed better clinical modeling operation related indicators and restoration fitting accuracy related indicators (P<0.05); Compared with the control group, the overall clinical repair efficacy was higher and the incidence of complications was lower (P<0.05). Conclusion For patients with oral and dental defects requiring fixed denture restoration, digital impression technology is used to replace traditional impression technology for clinical modeling work. This can effectively shorten the clinical modeling operation time, improve the accuracy of restoration production and overall clinical restoration efficacy, improve patient comfort during diagnosis and treatment, and reduce the risk of related complications after fixed restoration surgery. The comprehensive clinical application effect is more excellent.