Comparative Evaluation of Enamel Surface Microroughness in White Spot Lesions Treated with ICON Resin Infiltration and Opalustre Microabrasion

Ralitsa Bogovska-Gigova

Abstract: Objective: This in vitro study aimed to compare the surface microroughness (Ra) of enamel white spot lesions before and after treatment with ICON resin infiltration and Opalustre microabrasion. Methods: Sixty extracted human permanent third molars with white spot lesions (ICDAS II code 02) were randomly assigned to three groups (n=20 each): control (untreated), ICON resin infiltration, and Opalustre microabrasion. ICON treatment involved etching with 15% hydrochloric acid, dehydration, resin infiltration, and light-curing. Opalustre microabrasion used 6.6% hydrochloric acid with silicon carbide particles, applied three times, followed by polishing. Surface roughness (Ra) was measured using a profilometer at three points per lesion, and mean Ra values were analyzed using one-way ANOVA with post-hoc Tukey?s HSD tests (p<0.05). Results: Mean Ra values were 0.56 ? 0.17 ?m for the control group, 0.22 ? 0.24 ?m for the ICON group (60.7% reduction), and 0.31 ? 0.21 ?m for the Opalustre group (44.6% reduction). Both treatments significantly reduced Ra compared to the control group (p<0.001). ICON achieved significantly lower Ra values than Opalustre (p=0.002). Conclusion: ICON resin infiltration and Opalustre microabrasion both reduce the microroughness of white spot lesions, with ICON producing a smoother surface. These findings suggest that ICON is more effective in improving surface characteristics, potentially reducing bacterial adhesion and enhancing long-term oral health outcomes.

Keywords: white spot lesions, enamel microroughness, ICON resin, Opalustre treatment, minimally invasive dentistry

How to Cite?: Ralitsa Bogovska-Gigova, "Comparative Evaluation of Enamel Surface Microroughness in White Spot Lesions Treated with ICON Resin Infiltration and Opalustre Microabrasion", Volume 14 Issue 9, September 2025, International Journal of Science and Research (IJSR), Pages: 324-327, https://www.ijsr.net/getabstract.php?paperid=SR25906183514, DOI: https://dx.doi.org/10.21275/SR25906183514