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Enamel wear caused by three different restorative materials
J D Hudson1, G R Goldstein, M Georgescu
1College of Dentistry, New York University, N.Y., USA.
The Journal of Prosthetic Dentistry
|December 1, 1995
Summary
Dental restorative materials vary in their impact on natural teeth. Porcelain caused the most enamel wear, while gold alloy and composite restorations showed similar, minimal wear.
Area of Science:
- Dental Materials Science
- Biomaterials Engineering
- Restorative Dentistry
Background:
- Minimizing wear on opposing enamel is a key goal for ideal dental restorative materials.
- Understanding the wear characteristics of different restorative materials is crucial for clinical success.
Purpose of the Study:
- To compare the wear effects of gold alloy, glazed porcelain, and laboratory-processed composite on opposing enamel.
- To evaluate the wear potential of common dental restorative materials.
Main Methods:
- Ten samples each of Type III gold alloy, glazed porcelain, and a visible-light, heat, and vacuum-processed composite were tested.
- Restorative material samples were abraded against extracted molar cusps for 10,000 cycles using an abrasion machine.
- Profilometric measurements and optical comparator tracings assessed changes in restorative material and opposing enamel (vertical height, surface area).
Main Results:
- No statistically significant difference was found in the wear of the restorative materials themselves (pretest vs. posttest profilometry).
- Glazed porcelain caused significantly greater loss of vertical height and surface area in opposing enamel compared to gold alloy and composite.
- Gold alloy and laboratory-processed composite exhibited similar, minimal wear on opposing enamel.
Conclusions:
- Glazed porcelain demonstrates a higher wear potential on opposing enamel than gold alloy or composite.
- Gold alloy and laboratory-processed composite are favorable restorative material choices for minimizing enamel abrasion.