(An In-Vitro Study) The Effect Of Silver Diamine Fluoride On Bond Strength To Demineralized Enamel

Abstract

microshear bond strength values to enamel with no statistically significant difference between them. As there is an increasing use of SDF for management of caries, the enamel margin of cavities may have been treated by SDF before placement of restoration. The resin restorations must bond to a tooth pre-treated with 38% SDF. This study was conducted to evaluate the influence of SDF application to sound and demineralized enamel on microshear bond strength of mild universal adhesive bonding in self-etch mode.

In total, 80 sound molars were prepared and molded then half of samples were immersed into lab made demineralizing solution to create enamel demineralization. All samples are divided into four groups according to enamel state of mineralization and surface treatment using SDF (20 specimen / group). Group 1: Sound Enamel without SDF, Group 2: Demineralized Enamel without SDF, Group 3: Sound Enamel with SDF, Group 4: Demineralized Enamel with SDF. SDF application followed by mild universal adhesive application in self-etch mode then injection of flowable composite into plastic mold with 1 ml in diameter. Microshear bond strength was measured using Universal testing machine. Means and Standard deviation for each group were calculated. Statistical analysis was performed using SPSS statistical analysis program for Windows (version 21.0). Statistical analysis was performed using Two- way analysis of variance (ANOVA) at P ≤ 0.05 and One-Way ANOVA/ Tukey’s HSD post hoc test.

Results revealed that Group 1 and Group 4 have highest microshear bond strength values to enamel with no statistically significant difference between them. while Group 3 and Group 2 have lowest