Effect of application of remineralizing agents on the microhardness of microabraded teeth

Abstract

Background: To evaluate microhardness of enamel surface after microabrasion of enamel using casein phosphopeptideamorphous calcium phosphate (CPP-ACP) and casein phosphopeptide-amorphous calcium phosphate with fluoride (CPP-ACPF). Materials and methods:Ten freshly extracted anterior teeth were selected. Teeth were treated with abrasive slurry. This prepared slurry was applied to the labial aspects of teeth, using a rotating rubber cup, for 50 seconds. Each tooth was divided into four parts and treated accordingly with the topical application of the demineralizing agent stored in artificial saliva. The teeth were divided into four groups, as follows:Group A: Control groupGroup B: Microabrasion done but not treatedGroup C: Microabrasion done and CPP-ACP paste applied Group D: Microabrasion done and CPP-ACPF (i.e. with fluoride) applied. The microhardness was evaluated using the Vicker’s microhardness test. Results: Microhardness values were highest for the control group followed by group D, group C and finally group B. Microabraded group of teeth with no topical application showed least microhardness values of all. Conclusion: The CPP-ACPF increased the microabrasion significantly as compared to CPP-ACP and microabrasion group.