Effect of fluoride application on specular reflectance and stain potential of unfilled and photocured microfilled resin veneering materials.

ABSTRACT

A laboratory study was conducted to determine the effect of application of four types of fluoride solutions commonly used and administered by dentists on the specular reflectance and staining potential of photocured and regular unfilled resin veneering materials. The fluoride solutions used were (1) 1.23% acidulated phosphate fluoride gel (APF) gel, (2) 0.4% stannous fluoride gel, (3) 0.2% sodium fluoride solution and (4) .05% sodium fluoride solution. Specular and diffuse reflectance using scanning spectrophotometer were carried out for the fluoride treated samples and the control untreated samples before and after staining. The results revealed that the (APF) gel, produced the highest surface roughness and staining ability followed by the stannous fluoride solution for the both tested veneering materials. The sodium fluoride mouth wash solutions (0.2% and 0.05%) produced the least effect. So, on the bases of these results, caution should be taken in utilization of fluoride treatment in patients with prosthesis containing resin veneering material.