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Evaluation of an improved centrifugal casting machine.

T E Donovan, L E White

The Journal of Prosthetic Dentistry

|May 1, 1985

Summary

The Airspin casting machine produced superior dental castings with gold, silver-palladium, and base metal alloys. Base metal alloys yielded the most complete castings across both tested centrifugal casting machines.

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Area of Science:

Dental materials science
Biomaterials engineering
Casting technology

Background:

Centrifugal casting is crucial for fabricating dental prosthetics.
Evaluating the castability of various alloys is essential for clinical success.
Different casting machines may influence the quality of dental castings.

Purpose of the Study:

To compare the castability of Type III gold, silver-palladium, and base metal alloys.
To assess the performance of two different centrifugal casting machines in dental casting.
To determine which alloy and machine combination yields the best casting results.

Main Methods:

Three alloys (Type III gold, silver-palladium, base metal) were evaluated.
Casting procedures were performed using two distinct centrifugal casting machines.
The number of complete cast mesh squares served as the primary metric for castability.

Main Results:

The Airspin casting machine demonstrated superior performance, producing more complete castings across all tested alloys.
The base metal alloy consistently produced the highest number of complete cast mesh squares with both machines.
Significant differences in castability were observed between the alloys and casting machines.

Conclusions:

The Airspin casting machine is recommended for achieving superior dental castings with the evaluated alloys.
Base metal alloys show promising castability, potentially offering a cost-effective alternative.
Further research into alloy-machine interactions can optimize dental casting protocols.

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