Objective To explore the effect of orthodontics treatment on aesthetics and dental function in patients undergoing oral restoration. Methods A total of 40 patients undergoing oral restoration admitted to our hospital from January 2022 to June 2023 were selected as the research subjects, and they were divided into the control group and the observation group by the random number table method, with 20 patients in each group. The control group received conventional oral restoration, and the observation group received orthodontics treatment on the basis of conventional oral restoration. The aesthetics, dental function, satisfaction, complication rate and clinical efficacy were compared between the two groups. Results The scores of dental alignment and occlusal relationship in the observation group were better than those in the control group (P <0.05). The scores of masticatory function, language function, occlusal function and occlusal contact area in the observation group were better than those in the control group (P <0.05). The satisfaction with aesthetics, comfort and functional recovery in the observation group were better than those in the control group (P <0.05). The incidence of complications in the observation group (10.00%) was lower than that in the control group (30.00%) (P <0.05). The scores of restoration stability, periodontal health and oral hygiene in the observation group after treatment were higher than those in the control group (P <0.05). Conclusion Orthodontics treatment combined with conventional oral restoration can effectively improve dental alignment and occlusal relationship, enhance masticatory, language and occlusal functions, improve patient satisfaction and clinical efficacy, and reduce the incidence of complications. It has good clinical application value and is worthy of clinical application.