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Effect of Silver Diamine Fluoride (SDF) Application on Microtensile Bonding Strength of Dentin in Primary Teeth.

PURPOSE
The purpose of this study was to investigate the effect of silver diamine fluoride (SDF) on the microtensile bonding strength of resin composite to the dentin of primary molars.


METHODS
Twelve primary molars were randomly assigned to either the control or the SDF groups, and microtensile bonding strength (mTBS) was measured. The surface morphology was evaluated by visual inspection and scanning electron microscopy (SEM) imaging.


RESULTS
The mean±(SD) value of mTBS in the control and SDF group was 162.09±81.08 and 139.85±88.53, respectively (P=0.402). SEM images showed that, in the control group, the majority of the fractures occurred at the adhesive-dentin conjunction, while in the SDF group failure mostly occurred within the adhesives.


CONCLUSIONS
Pretreating dentin with 38 percent silver diamine fluoride does not affect the bonding strength of composite resin to dentin. The fracture patterns observed suggest that bonding strength might be stronger between the adhesive and the SDF-applied dentin. Our data suggest that SDF can be used as a dentin pretreatment prior to resin restoration potentially contributing to secondary caries prevention in primary teeth.