Shirani Farzaneh, Ravanbod Shirin, Sehat Mohammad Soroush
Dental Research Center, Dental Research Institute, Department of Operative Dentistry, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
Department of Operative Dentistry, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
Heliyon. 2025 Jan 6;11(2):e41731. doi: 10.1016/j.heliyon.2025.e41731. eCollection 2025 Jan 30.
This in vitro study investigates the effects of Silver Diamine Fluoride (SDF) application on the shear bond strength (SBS) of resin composite to sound and demineralized human teeth using different adhesive systems.
Eighty sound human third molars were sectioned, mounted in acrylic blocks, and prepared to expose a 2 mm thick dentin layer. The teeth were randomly divided into eight groups, each representing a combination of sound or demineralized dentin, SDF application, and adhesive system used. Demineralization was achieved using a pH cycling process. SDF was applied to the designated groups, followed by the use of either an etch-and-rinse or self-etch adhesive system. Resin composite was then applied, and the SBS was measured using a universal testing machine. Data were analyzed using three-way ANOVA and post-hoc tests to identify significant differences.
The application of SDF generally led to a significant decrease in bond strength (p < 0.05). In sound dentin, the SBS was higher compared to demineralized dentin (p < 0.05). OptiBond FL showed higher bond strength than Clearfil SE Bond across all groups, although the difference was not statistically significant (p > 0.05). The bond strength in the demineralized group using Clearfil SE Bond showed no significant difference between SDF application and non-application (p > 0.05).
SDF application can significantly reduce the bond strength of resin composite to dentin, with the effect being dependent on the type of adhesive system and the state of the dentin. Further in vivo studies are needed to validate these findings.
本体外研究调查了使用不同粘结系统时，应用氟化银胺（SDF）对树脂复合材料与健康及脱矿人牙之间剪切粘结强度（SBS）的影响。
将80颗健康人第三磨牙进行切片，固定于丙烯酸树脂块中，并制备出2毫米厚的牙本质层。牙齿被随机分为八组，每组代表健康或脱矿牙本质、SDF应用情况及所使用粘结系统的一种组合。通过pH循环过程实现脱矿。对指定组应用SDF，随后使用酸蚀冲洗或自酸蚀粘结系统。然后应用树脂复合材料，并使用万能试验机测量SBS。使用三因素方差分析和事后检验分析数据，以确定显著差异。
SDF的应用通常导致粘结强度显著降低（p < 0.05）。在健康牙本质中，SBS高于脱矿牙本质（p < 0.05）。在所有组中，OptiBond FL显示出比Clearfil SE Bond更高的粘结强度，尽管差异无统计学意义（p > 0.05）。在使用Clearfil SE Bond的脱矿组中，应用SDF与未应用SDF之间的粘结强度无显著差异（p > 0.05）。
应用SDF可显著降低树脂复合材料与牙本质之间的粘结强度，其效果取决于粘结系统的类型和牙本质的状态。需要进一步的体内研究来验证这些发现。
