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Restorative

490 - Effects of 38% Silver Diamine Fluoride on Shear Bond Strength of Adhesives to Permanent Molars

Saturday, May 25, 2024
12:45 PM – 12:55 PM EST
Location: Exhibit Hall (back left corner of the hall, space 137)
Abstract: Purpose: To evaluate the influence of silver diamine fluoride (SDF) on the shear bond strength of total-etch adhesives.

Methods: 30 non-carious, permanent, human molars were collected. They were placed in an ultrasonic bath for 30 minutes and then hand-scaled to remove all debris. Each tooth was sectioned mesiodistally using a high-speed handpiece and diamond disc, resulting in two specimens per tooth. Specimens were mounted into cylindrical molds via acrylic resin with the cut side exposed. After curing for 24 hours, specimens were applied to a cast grinder until all excess resin was removed from the cut surfaces and a roughened, flat surface was obtained. The specimens were then stored at 37°C in Dulbecco’s Artificial Saliva Solution for 24 hours. 15 specimens were randomly allocated to one of four test groups - Group 1: Scotchbond, Group 2: SDF + Scotchbond, Group 3: Optibond, or Group 4: SDF + Optibond. After adhesive and resin application, specimens were returned to Dulbecco’s Artificial Saliva Solution for 24 hours, then shear bond strength testing was performed on the UltraTester Bond Strength Testing Machine at a speed of 1.0mm/minute. Maximum stress data were statistically analyzed using a two-way ANOVA Holm-Sidak post-hoc test, with P < .05 for significance.
Results: Results in MPa were – Group 1: 26.5±3.0, Group 2: 25.6±7.2, Group 3: 21.1±5.7, Group 4: 21.7±5.7. Statistically significant differences were only noted between groups 1 and 3, with P=.012.

Conclusions: SDF did not affect shear bond strength to dentin when used in conjunction with Scotchbond Universal Plus or Optibond Solo Plus.

Identify Supporting Agency and Grant Number: Research supported by the University of Tennessee Health Science Center.