Related Experiment Video
Updated: Aug 24, 2025
07:42
Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
Published on: December 20, 2024
445
In Vitro Wear of Glass-Ionomer Containing Restorative Materials
A S Valeri1, T A Sulaiman2, J T Wright3
1Arthur S Valeri, DMD, MS, commander, Dental Corps, United States Navy, Navy Medicine Readiness and Training Command Great Lakes, North Chicago, IL, USA.
Operative Dentistry
|October 24, 2022
Summary
Wear rates of glass-ionomer dental materials vary significantly. Some perform comparably to resin composites, while others show higher wear, impacting their use in load-bearing restorations.
Area of Science:
- Dental Materials Science
- Biomaterials Engineering
- Restorative Dentistry
Background:
- Advertisements promote glass-ionomer materials for load-bearing restorations.
- Historically, high wear rates have limited their clinical applications.
Purpose of the Study:
- To compare the in vitro wear of contemporary glass-ionomer dental materials.
- Materials were tested as load-bearing restorations in a chewing simulator against a resin composite control.
Main Methods:
- Evaluated resin-modified glass ionomer (Ionolux), high viscosity glass-ionomer hybrid (Equia Forte HT), and bioactive restorative (Activa Bioactive).
- Resin composite (Filtek Supreme Ultra) served as control.
- Specimens underwent 500,000 cycles in a chewing simulator with thermal cycling; volumetric wear was measured.
Main Results:
- Activa Bioactive Restorative showed significantly less wear (approx. 60% less) than the resin composite control.
- Equia Forte HT exhibited significantly higher wear (approx. twice as much) compared to the control.
- Ionolux showed no statistically significant difference in wear compared to the resin composite control.
Conclusions:
- Contemporary glass-ionomer materials exhibit variable in vitro wear rates when compared to resin composites.
- These findings highlight differences in wear performance among glass-ionomer restorative materials advertised for load-bearing applications.
