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Gallium restorative materials

¹Restorative Dentistry, Faculty of Dentistry, University of Toronto.

Journal (Canadian Dental Association)

|November 13, 1998

Summary

This summary is machine-generated.

Gallium restorative alloys show short-term success for small fillings but exhibit significant tarnish and corrosion. These dental materials are not yet a viable alternative for larger restorations or a less technique-sensitive option than resin composites.

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Area of Science:

Dental Materials Science
Restorative Dentistry

Background:

Gallium restorative alloys were introduced as a potential alternative to traditional amalgam fillings.
Amalgam has limitations, including esthetics and mercury content, driving the search for alternatives.

Purpose of the Study:

To evaluate the clinical performance of gallium-based dental restorative alloys.
To assess their suitability as a less technique-sensitive alternative to amalgam and resin composites.

Main Methods:

Short-term clinical trials were conducted on small restorations.
Evaluation focused on performance, tarnish, corrosion, and handling characteristics.

Main Results:

Small gallium restorations performed adequately in the short term with meticulous moisture control.

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Significant tarnish and corrosion were observed.

Performance in large restorations was unsatisfactory.

Hydrophobic resin sealants are mandatory to mitigate issues like expansion and sensitivity.

Conclusions:

Gallium alloys, in their current form, are not a suitable replacement for amalgam in challenging posterior restorations.
They are more technique-sensitive than desired and require significant improvements.
The product "Galloy" was voluntarily withdrawn from the market for reformulation.