Oral Health and Dental Management

The effect of remineralization pre-treatments on the enamel bond strength of demineralized and sound enamel

31^st International Conference on Dental Science & Advanced Dentistry

June 25-26, 2018 | Vancouver, Canada

Farzaneh Shirani

Isfahan University of Medical Sciences, Iran

Posters & Accepted Abstracts: Oral Health Dent Manag

Abstract:

The purpose of this study was to evaluate the effect of remineralizing pretreatments with casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) or casein phosphopeptide-amorphous calcium fluoride phosphate (CPP-ACFP) on the bond strength between composite resin and sound or demineralized enamel surfaces. One hundred and forty-four enamel surfaces were prepared and randomly divided into 12 groups (G1-G12). Surfaces of G7-12 were demineralized to create a lesion (L), while G1-6 was assigned to the sound (S) enamel group. Three pretreatment protocols were considered during a 10 day pH-cycling period: CPPACFP, CPP-ACP, or no pretreatment (for the control groups). A composite rod was bonded to the surfaces using a self-etch or totaletch bonding system. Shear force was applied at a rate of 1 mm/min and the bond strengths of the specimens were calculated. The sound (S) groups (33.81�8.48MPa) showed a significantly higher bond strength compared to the lesion (L) groups (25.77�6.69MPa; P<0.001). Among the pretreatments, CPP-ACFP pretreated groups had the highest bond strengths (33.86�8.87MPa). The mean bond strengths for the self-etch and total-etch bonded specimens were 25.77�6.50 and 33.81�8.62, respectively (P<0.001). Pretreatment of early caries lesions with CPP-ACFP before a composite restoration not only remineralizes the lesion but also increases the bond strength of the restoration.

Biography :

E-mail: fshirani48@yahoo.com