Casein phosphopeptide-amorphous calcium phosphate and shear bond strength of adhesives to primary teeth enamel

Abstract EN

Background : CPP-ACP (Phosphopeptide-Amorphous Calcium Phosphate) has an important role in caries prevention in pediatric patients.

This study was done, because of the great use of CPP-ACP and the need for restoration for teeth treated with CPP-ACP as well as the importance of shear bond strength of adhesives in the success of restorations.

Objectives : This study aimed to evaluate the effect of casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) on shear bond strength of dental adhesives to enamel of primary teeth molars.

Materials and Methods: This in vitro study was conducted on 180 extracted primary molars.

They were randomly divided into 6 groups and each group was divided into 2 subgroups (treated with CPP-ACP and untreated).

In subgroups with CPP-ACP, enamel was treated with CPP-ACP paste 1 h/d for 5 days.

Types of adhesives that were evaluated in this study were Tetric N-Bond, AdheSE, AdheSE One F, single Bond 2, SE Bond, and Adper Prompt L-Pop.

Shear bond strength was tested with a universal testing machine and mode of failure was evaluated under stereomicroscope.

Data were analyzed by T test, 2-way analysis of variance (ANOVA), Tukey and Fisher exact test using SPSS18.

P < 0.05 was considered as significance level.

Results : Shear bond strengths of different adhesive systems to enamel of primary teeth treated and untreated with CPP-ACP showed no significant difference (P > 0.05).

Mode of failure in all groups regardless of CPP-ACP administration was mainly adhesive type.

Our results indicated that CPP-ACP did not affect shear bond strength of studied adhesives to primary teeth enamel.

Conclusions : To have a successful and durable composite restoration, having a high strength bonding is essential.

Considering the wide use of CPP-ACP in preventing tooth decay and the role of adhesive shear bond strength (SBS) in success of composite restoration, we conducted the present study to evaluate the effect of CPP-ACP on the SBS of adhesives to primary teeth enamel.