Objective To analyze the effect of porcelain veneer restoration technology on periodontal indicators and aesthetic effect in patients with incisal angle defect of anterior teeth. Methods A total of 60 patients with incisal angle defect of anterior teeth admitted to Shenzhen Yalikang Dental Clinic from January 2022 to January 2025 were selected, and they were divided into the control group and the observation group by the random number table method, with 30 patients in each group. The control group was given nano-resin restoration technology, and the observation group was given porcelain veneer restoration technology. The periodontal indicators, aesthetic effect, masticatory function and complications were compared between the two groups. Results At 6 months after restoration, the PD of the observation group was shorter than that of the control group, and the scores of GI, PLI, PAL and SBI were all lower than those of the control group (P<0.05). At 6 months after restoration, the scores of marginal adaptation, color matching, marginal staining and restoration integrity in the observation group were all higher than those in the control group (P<0.05). At 6 months after restoration, the occlusal force and masticatory efffciency of the observation group were higher than those of the control group (P<0.05). The incidence of complications in the observation group (6.67%) was lower than that in the control group (26.67%) (P<0.05). Conclusion Compared with nano-resin restoration technology, the application of porcelain veneer restoration technology in patients with incisal angle defect of anterior teeth can effectively improve periodontal health, enhance post-restoration aesthetic effect, reduce the incidence of complications, and promote the recovery of masticatory function.