Effects of Microabrasion on non Active White Spots in Primary Teeth

Abstract

Objective: The aim of this study was to verify the enamel micromorphology with non active white spot lesions after the application of two different compounds used in microabrasion technique. Method: Thirty primary molars with non active white spot lesions in approximal surfaces were selected. Samples were randomly divided into three groups. G1 (n=10): control, untreated. G2 (n=10): compound (35% phosphoric acid and pumice mixed - 1:1) was applied on stain enamel. G3 (n=10): compound Opalustre, a slurry containing 6.6% HCl (hydrochloric acid) and silicon carbide microparticles was applied. After this, all specimens were dehydrated, mounted on metal stubs, coated with gold and examined under scanning electron microscope (Jeol, JSM - 6100). Results: Eletronmicrographs analysis showed that the G1 samples (control, without treatment) had a smooth surface with the presence of pumice residue. G2 samples (phosphoric acid and pumice) presented rugous enamel surface with areas of enamel prisms demineralization. In G3 samples (Opalustre) it were observed the formation of scratchs and grooves, beyond the presence of compound residue. Conclusion: The application of different types of compounds led to the formation of different aspects in micromorphology of primary teeth enamel.

Keywords

• Microabrasion
• Dental enamel
• Deciduous tooth