Effect of silver diamine fluoride on the prevention of erosive tooth wear in vitro

•The ability of silver diamine fluoride (SDF) to prevent erosion and erosion-abrasion was investigated in vitro.•SDF was effective in preventing erosion on enamel and dentin.•SDF was effective in preventing erosion-abrasion on dentin only. To investigate the ability of silver diamine fluoride (SDF) to prevent erosive tooth wear in enamel and dentin. SDF (38 %) was compared to deionized water (DIW, negative control), potassium fluoride (KF, fluoride control), silver nitrate (AgNO3, silver control), and fluoride varnish (FV, clinical reference) using erosion and erosion-abrasion cycling models. Bovine enamel and dentin slabs were embedded in resin blocks. Two resin blocks were glued to form study blocks (n=8, per treatment), one for erosion and the other for the erosion-abrasion model. The blocks were treated once and then subjected to a five-day cycling model, with five daily citric acid erosive challenges (0.3 % citric acid/pH 2.6). Abrasion was performed using a toothbrushing machine with a medium-abrasive silica as abrasive (erosion-abrasion model only). Artificial saliva was used to remineralize the specimens after erosion/abrasion and as storage media between cycles. Surface loss (SL) was determined by non-contact profilometry. Data were analyzed using ANOVA (α=0.05). Both eroded-abraded enamel and dentin specimens exhibited significantly more SL in all treatment groups than the only eroded ones (p