Effect of silver diamine fluoride and potassium iodide on shear bond strength of composite resin to caries affected dentin

Abstract

Silver diamine fluoride (SDF) solution gains popularity in clinical practice. Little known whether its combination with potassium iodide (KI) will affect adhesion to dentin and does KI reverse silver diamine fluoride staining Aim: the aim of this study was to investigate the effect of silver diamine fluoride and potassium iodide treatment on the bond strength of composite resin to artificial caries affected dentin and effect of KI on dentin discoloration caused by SDF. Material and methods: 90 dentin samples prepared of 2mm thickness were prepared from extracted human molars and divided into three groups(n=30) based on dentin surface treatment as follows:(1) SDF pretreatment of dentin ;(2)SDF+KI pretreatment of dentin;(3) dentin without treatment color assessment was recorded. Composite resin was built on all samples and shear bond strength was tested. XIII Result: pretreatment of affected dentin with SDF, SDF+KI increased SBS and statically significant. Potassium iodide following SDF masked discoloration of affected dentin caused by SDF. Conclusion: pretreatment of affected dentin with SDF, SDF+KI doesn’t adversely affect shear bond strength (SBS) of composite resin and it was statically significant and treatment of affected dentin with KI immediately after SDF treatment significantly reduced the discoloration caused by SDF. Key words: silver diamine fluoride, potassium iodide, affected dentin, discoloration, shear bond strength