Color Masking Potential of Bioactive and ICON Materials

The Color Masking Potentials of a Bioactive Glass Adhesive and the Resin ICON on the White Spot Lesions. A Comparative Clinical Trial

The non cavitated white-spot lesion (WSL) occurs after sometime during fixed orthodontic treatments, and their treatment is mandatory before going into frank cavitation. The resin infiltration material (ICON, DMG, America) is considered to be the gold standard resin infiltrationmaterial used for WSL treatment. It is an efficient material in arresting WSLs and has high favorable esthetic recovery. Furthermore, biomaterials like bioactive glass adhesives HI-bond universal adhesive have always been used for replacement, repair and generation of dental hard tissues. The hypotheses of this study are:

1. There will be no differences in color masking effect on WSLs managed by bioactive glass adhesive or ICON resin infiltration.
2. There will be no significant addition of mineral content into WSLs after treating it with bioactive glass adhesive HI-Bond universal or with ICON.

After sample size calculations were carried out a total sample size of 150 teeth will be included (75 teeth will be treated with ICON; and 75 other teeth will be treated with HI-Bond universal].

Split mouth study design involves treating WSLs in two different quadrants in each participant. Treatments will be done according to manufacturer's instruction. The WSLs in the teeth of one quadrant will receive treatments with the ICON (DMG, America) , and the others in the opposite quadrant will receive treatments with the bioactive glass adhesive HI-Bond universal (MEDICLUS, south Korea).

Before receiving the treatment, the WSLs will be tested at baseline by Quantitative light-induced fluorescence (QLF) device then the test will be repeated at 1-month after the treatment for the quadrant that received bioactive glass adhesive.

Inclusion Criteria: Patients with teeth and WSL fullfiling the following criteria will be included in the study:

1. Anterior and premolar maxillary and mandibular teeth.
2. Teeth with no previous restorations.
3. post-orthodontic white spot lesions WSL with no adjacent restorations in the same tooth.
4. WSL on Labial surfaces of maxillary or mandibular anterior and premolars teeth.

Exclusion Criteria: The following will be excluded from the study,

1. Cavitated enamel surface that requires direct composite restorations.
2. Presence of developmental enamel defects on the proposed teeth.
3. Diabetic patients and patients with metabolic syndrome.
4. Pregnant ladies.
5. Smoker patients.