Treatment of White Spot Lesions With MI Paste Plus, With or Without Microabrasion: A Split-Mouth, Randomized Clinical Trial

Abstract

Purpose

The purpose of this study was to determine whether the addition of microabrasion to MI Paste Plus provides significant added benefits over MI Paste Plus alone in reducing the amount of demineralization and restoring enamel lightness.

Materials and Methods

This prospective, randomized controlled split-mouth clinical trial involved 14 patients, recruited from the Texas A&M College of Dentistry, Department of Orthodontics, who completed fixed orthodontics at least six months prior to the study, and had at least one white spot lesion on both upper left and right anterior dentition. Teeth were randomized to the combined side (which received both microabrasion and MI Paste Plus) or the control side (which received only MI Paste Plus). The combined side underwent two applications of rubber dam-isolated microabrasion while patients applied MI Paste Plus to both groups twice daily throughout the study. Enamel lightness value was obtained using spectrophotometer analysis. Surface area of the lesion was obtained with photography software analysis.

Results

Lesion size as a percentage of surface area significantly decreased for both groups compared to baseline. The combined side exhibited significantly more reduction in lesion surface area than the control side. Enamel lightness value improved significantly from baseline in the control side.

Conclusions

Microabrasion with MI Paste Plus, as a dual technique, should be considered as an effective and less-invasive option in the treatment of white spot lesions in post-orthodontic patients.