Effect of Resin Infiltrate Modified with Bioactive Glass on Hardness and Color Stability of White Spot Lesions
Author(s): Reem Ashraf*
Abstract
Introduction: Resin infiltration is now used in treatment of white spot lesion, the incorporation of bioactive particles in such
procedure would favour remineralisation of the defect increasing the surface hardness that might be considered a
breakthrough the minimally invasive treatment.
Aim: To evaluate the effect of adding nano bioactive glass as a Re-mineralizing agent to ICON resin infiltrate on enamel
micro hardness and color change without compromising depth of penetration.
Materials and methods: 20 sound human upper anterior teeth extracted due to grade III mobility were decapitated from
their roots, all aspects of the crown were coated with varnish, leaving a 4 mm × 4 mm window and left in demineralizing
solution to create demineralized lesions. Afterwards half of ICON resin infiltrate was mixed with 10% of nano bioactive
glass dissolved in ethanol, teeth were then divided into two group. Group I: Treated with ICON containing 10% Nanobioactive
glass. Group II: Treated with ICON only, the two groups were examined before and after treatments for hardness
and color stability after staining.
Results and discussion: There was no significant change in hardness of enamel surface between the two groups and the
bioactive glass was able to penetrate through the enamel surface, color stability as well was not compromised by addition of
bioactive glass.
Conclusion: Addition of nano bioactive glass to resin infiltrate would not compromise hardening effect of resin or
penetration of the lesion or color change.