Objective To analyze the effect of all-ceramic veneer technology on periodontal indicators and occlusal function in patients undergoing aesthetic restoration of anterior diastema. Methods A total of 80 patients who underwent aesthetic restoration of anterior diastema in our hospital from March 2023 to March 2025 were selected as the research subjects, and they were divided into the reference group and the study group by the random number table method, with 40 patients in each group. The reference group was given all-ceramic crown restoration, and the study group was given all-ceramic veneer technology. The periodontal indicators, occlusal function, aesthetics, quality of life and complications were compared between the two groups. Results After 6 months of treatment, the periodontal indicator scores of the study group were lower than those of the reference group, and the differences were statistically signiffcant (P<0.05). After 6 months of treatment, the maximum occlusal force and maximum occlusal contact area of the study group were higher than those of the reference group, while the occlusal force asymmetry index was lower than that of the reference group, and the differences were statistically signiffcant (P<0.05). After 6 months of treatment, the scores of PES and WES in the study group were higher than those in the reference group, and the differences were statistically signiffcant (P<0.05). After 6 months of treatment, the scores of quality of life in the study group were higher than those in the reference group, and the differences were statistically signiffcant (P<0.05). The incidence of complications in the study group was 2.50%, which was lower than 17.50% in the reference group, and the difference was statistically signiffcant (P<0.05). Conclusion All-ceramic veneer technology can effectively improve periodontal indicators and occlusal function, enhance aesthetics and quality of life in patients requiring aesthetic restoration of anterior diastema, and has high safety.