Wear behaviour of different bioactive restorative materials

Area of Science:

• Dental materials science
• Biomaterials engineering
• Restorative dentistry

Background:

• Dental wear is a common cause of tooth deterioration, particularly in posterior restorations subjected to high masticatory loads.
• The tribology of dental materials is crucial for selecting appropriate restorative materials, especially in pediatric dentistry.
• Activa BioActive-Restorative is a novel bioactive ionic resin designed to merge the mechanical properties of composites with the chemical and biological benefits of glass ionomer cements.

Purpose of the Study:

• To evaluate the in vitro wear resistance of Activa BioActive-Restorative.
• To compare the wear resistance of Activa BioActive-Restorative against two other bioactive materials: a compomer (Dyract eXtra) and a giomer (Beautifil II LS).

Main Methods:

• Wear tests were conducted using a CSM Tribometer on three distinct bioactive materials.
• Wear was quantified by analyzing 3D surface topographies to determine wear volumes.
• Gravimetric analysis was performed to measure the mass loss of each material after the wear tests.

Main Results:

• Activa BioActive-Restorative demonstrated satisfactory wear resistance when compared to the tested compomer and giomer.
• The study provides quantitative wear volume and mass loss data for all three materials.

Conclusions:

• Activa BioActive-Restorative exhibits favorable wear resistance, making it a viable option for dental restorations.
• Its ease of application, biocompatibility, safety, and durability make it a recommended material for pediatric patients.