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Dimensional changes in casting titanium removable partial denture frameworks
1Department of Restorative Dentistry, University of Texas Health Science Center, Dental School, San Antonio.
The Journal of Prosthetic Dentistry
|February 1, 1991
Summary
Titanium casting in dentistry is now feasible. This study found titanium removable partial denture frameworks exhibit dimensional changes comparable to other dental alloys, suggesting suitability for routine use.
Area of Science:
- Biomaterials Science
- Dental Materials
- Casting Technology
Background:
- Historically, titanium casting challenges limited its dental applications.
- Advancements in equipment and materials now enable routine titanium use in dental laboratories.
- Titanium offers excellent biocompatibility and mechanical properties for dental prosthetics.
Purpose of the Study:
- To evaluate the dimensional accuracy of pure titanium casting for removable partial denture frameworks.
- To compare titanium's dimensional changes with those of conventional base metal alloys.
Main Methods:
- Utilized a specific titanium casting system for fabricating 19 removable partial denture frameworks.
- Measured horizontal and vertical dimensional changes across various planes of the castings.
Main Results:
- Castings demonstrated cross-arch contraction.
- Vertical plane measurements showed expansion.
- Anteroposterior dimensional changes were near neutral.
Conclusions:
- Pure titanium exhibits dimensional changes within acceptable ranges for removable partial denture alloys.
- Titanium's dimensional stability is comparable to nickel-chromium base metal alloys.
- Routine use of titanium in dental laboratories for partial denture frameworks is viable.