Effect of experimental dentifrice on dental restorations. An in vitro study

Abstract

Objective: The experimental fluoride-containing bioactive dentifrices have caused a change in the restorative materials properties, however, it was minimal that properties still lied within the acceptable requirement for clinical applications. Materials and methods: Experimental dentifrices were prepared with the variable concentration of fluoride-based bioactive glass, nano-zinc oxide, and titanium oxide powders as active ingredients. A custom-made toothbrush simulator was used with variable cycles (0, 5000, and 10,000) to treat a disc-shaped like samples prepared from restorations (bulk fill, nano-hybrid composite, and resin-modified glass ionomer (RMGIC). Prior to, and after the treatment cycles, physical properties of the restorative materials were assessed through micro-hardness, surface roughness, and color stability testing. Results: The restorative materials showed an insignificant difference in terms of micro-hardness before and after tooth brushing treatment with all dentifrices. A significant difference was observed in terms of surface roughness. With respect to color stability, the result of treated toothpastes showed an insignificant difference between control and other three experimental dentifrices for all cycles (0, 5000, 10,000). Conclusion: The experimental fluoride-containing bioactive dentifrices have caused a change in the restorative materials properties, however, it was minimal that properties still lied within the acceptable requirement for clinical applications.