Effect of Enamel Deproteinization in Primary Teeth

Abstract

Objective: To evaluate and compare the topographical features of enamel surface, etched with different materials.

Study design: 10 extracted human primary molars were randomly selected and cut and trimmed to 1 mm². Each group comprised of 10 blocks and the enamel was treated as follows: Group I-35% H₃PO_4; Group II-5.25% NaOCl + 35% H₃PO_{4 ;}Group III-5.25% NaOCl; Group IV no treatment was carried out. All the samples were prepared for Scanning electron microscope analysis. The images were obtained and evaluated for the quality type I-II etching of the enamel surface using Auto-CAD 2011 software.

Statistical analysis used: Wilcoxon Signed Ranks Test (p<0.001).

Results: The mean surface area of type I and II etching pattern values for Group- I was 39608.18 μm² and Group- II was 45051.34 μm².

Conclusion: Deproteinization with 5.25% Sodium hypochlorite prior to acid etching could be used to increase the surface area of adhesion of composite material with the tooth surface.

Keywords: Deproteinization; Enamel; Etching.