Effect of Silver Diamine Fluoride on Shear Bonding Strength to Dentin for Different Restorative Materials on Primary Molars
Abstract: Aim and Hypothesis: This In vitro study was conducted to investigate the effect of silver diamine fluoride (SDF) on shear bond strength (SBS) of three different restorative materials after SDF treatment on primary dentin. Materials and Methods: Glass ionomer cement (GIC), resin-modified bioactive resin (ACTIVA), and composite resin (CR) were tested. Thirty teeth were randomized into thre... read moree groups of 10 teeth. Each tooth was split mesiodistally and randomized into test (artificial caries + SDF) and control (sound dentine + no SDF). The restorative material was placed, then tested for SBS, and type of failure was recorded. Results: All the test groups exhibited significantly lower mean SBS compared to the control groups (CR: p = 0.001; ACTIVA: p = 0.001; GIC: p = 0.004). For the SDF group, the comparison of materials was significant (p = 0.006), with significance between CR and ACTIVA (p = 0.009) and ACTIVA and GIC (p = 0.020), but not CR and GIC (p = 0.950). For the control group, Welch's F test was statistically significant (p = 0.044), but all post-hoc tests were not. The control CR group had only mixed failures, with a significantly greater percentage of mixed failures than the test group (p = 0.023). The test ACTIVA group showed only adhesive failures, with a significantly greater percentage of adhesive failures than the control group (p=0.041). The test GIC group had only mixed failures with no significant difference between test and control groups (p = 1.00). For the SDF group, ACTIVA only exhibited adhesive failures, and only mixed in GIC; the difference between groups was significant (p < 0.001). For the type of failure in the test group, CR had adhesive failures in 70% of samples with a significant difference between CR and GIC (p = 0.002), but not between CR and ACTIVA (p = 0.105). For the control group, there was no significant difference in type of failure (p=0.094). Conclusion: SDF significantly reduced the SBS when compared to the control. For the test group, mean SBS was highest for CR, GIC and then ACTIVA; differences between ACTIVA and the other groups were significant. For the control group, SBS was again highest for CR, then GIC and then ACTIVA, but all post-hoc tests were not significant. For type of failure, SDF exhibited a greater percentage of adhesive failures with ACTIVA and CR than with GIC. In the control group, a mixed type of failure was more dominant than the adhesive with no significant differences between materials. We recommend considering using CR or GIC after applying SDF on carious primary dentin.
Thesis (M.S.)--Tufts University, 2018.
Submitted to the Dept. of Pediatric Dentistry.
Advisor: Cheen Loo.
Committee: Gerard Kugel, Yoon Kang, and Matthew Finkelman.
Keyword: Dentistry.read less