Objective To investigate the effect of porcelain laminate veneer (PLV) restoration on periodontal health indicators in patients with dentition defect. Methods A total of 80 patients with dentition defect admitted to the Department of Stomatology, Changshu Yuhui Dental Hospital from January 2023 to October 2025 were selected as the research subjects. According to different treatment methods, they were divided into the control group and the observation group, with 40 patients in each group. The control group received all-ceramic crown (ACC) restoration, and the observation group received PLV restoration. The periodontal health indicators, satisfaction and complication rate were compared between the two groups. Results The BI, PD and AL in the observation group at 1 and 2 months after restoration were lower than those in the control group (P<0.05). The satisfaction rate in the observation group (97.50%) was higher than that in the control group (85.00%) (P<0.05). The incidence of complications in the observation group (2.50%) was lower than that in the control group (20.00%) (P<0.05). Conclusion For patients with dentition defect, the application of PLV restoration can effectively maintain periodontal health, reduce the risk of complications and improve satisfaction.