Abstract:Objective:To evaluate the effect of different surface treatment protocols on long-term esthetic outcomes and marginal adaptation of anterior resin restorations.Methods:A total of 100 patients who received anterior resin restoration in Guilin Stomatological Hospital from January 2023 to December 2024 were randomly divided into two groups (n=50 each). Group A was treated with mechanical polishing alone, while Group B with mechanical polishing combined with light-cured resin surface sealant. Marginal adaptation, white esthetic score (WES), color difference (ΔE),surface roughness (Ra) and patient satisfaction were compared between the two groups at 6 and 12 months after restoration.Results:At 6 and 12 months postoperatively, Group B had a higher proportion of A-grade marginal adaptation, higher WES scores, lower ΔE and Ra values, and higher patient satisfaction score than Group A (all P<0.05).Conclusion:Compared with mechanical polishing alone, the combination of mechanical polishing and light-cured resin surface sealant can better maintain marginal adaptation, improve esthetic outcomes, inhibit the increase of surface roughness, and enhance patient satisfaction in anterior resin restorations.