Esthetic Improvements of Various Degrees of White Spot Lesion Using Resin Infiltration and Micro-Abrasion (An In Vitro Study)
Author(s): Reem Majeed HJ Al Mamoori* and Aseel Haidar MJ Al Haidar
Background: White spot lesions are esthetic problems caused by subsurface enamel demineralization that seen as white opacity. Aim of the study: This study aimed to evaluate and to compare the color change after the treatment of the white spot lesions with resin infiltration and micro abrasion. Materials and Methods: Artificial white spot lesions were generated on 48 premolar teeth by the use of a demineralization solution. The teeth were randomly divided using the Diagnodent into three study groups (16 teeth for each group) depending on the depth of the induced lesions: outer enamel, inner enamel and outer dentine. Then each group was fatherly subdivided into two groups (8 teeth for each group) the first group was treated with resin infiltration, while the second one was treated with micro abrasion. For each group, Spectrophotometric examination was performed at three points: baseline (T0), after producing the lesion (T1), and after the treatment (T2). Results: While the mean of ΔE between (T0-T1) showed a significant difference between the outer and the inner enamel, the outer enamel and the outer dentine, there was no significant difference between the inner enamel and the outer dentine. On the other hand, the mean of ΔE between (T1-T2) of the three layers of the lesions showed that there was no significant difference between all the layers when the resin infiltration was used. However, there was a significant difference when the micro abrasion was used. The ΔE between (T0-T2) shows no significant difference between the three layers of the lesions and between the two materials, (p>0.05). Conclusion: Results of the present study revealed that the deeper the white spot lesion the more the color difference it was, and the resin infiltrates was excellent in improving the color of the lesion with the same effectiveness as the microabrsion was.