الفهرس 
AcknowledgmentsOnly 14 pages are availabe for public view
 |  | from | 94 |  |  |
| | | from | 94 | | |
Abstract
Objectives: The aim of this study was to evaluate the effect of resin infiltrant on white spot lesions compared to adhesive resin. Methods: Artificial white spot lesions were created on the labial surfaces of sixty five anterior permanent teeth. Thirty one teeth (group A white lesion) were divided into three groups according to treatment applied: control, A1, ICON A2 and adhesive A3. The remaining 34 teeth were immersed in a staining solution. The stained lesions were bleached (group B) then divided also to three groups: control B1, ICON bleached B2 and adhesive resin bleached B3. The teeth were photographed at three stages and photos were analyzed to evaluate the color difference ∆E between the lesion area and sound enamel before and after treatment using image software analysis. Then, Vickers micro-hardness test was done for the whole teeth after treatment. Results: The ICON A2 group showed a highly significant color improvement (P=<0.0001***) compared to the other groups. The other test groups also showed significance color improvement but not as the ICON group. Icon group A2 showed the highest surface microhardness. Conclusion and recommendations: Resin infiltrant is an effective microinvasive approach in masking white spot lesions much more than adhesive resin. A time interval between bleaching and resin application more than seven days may be need for better results.