Related Experiment Videos
In-Ceram fixed partial dentures: three-year clinical trial results
J A Sorensen1, S K Kang, T J Torres
1Oregon Health Sciences University, School of Dentistry, Portland 97201-3097, USA.
Journal of the California Dental Association
|August 26, 1998
Summary
This study found In-Ceram alumina fixed partial dentures (FPDs) have a 100% success rate for anterior use. However, posterior In-Ceram FPDs showed significantly higher failure rates, indicating it
Area of Science:
- Dental Materials Science
- Prosthodontics
Background:
- In-Ceram, a high-alumina ceramic, is suitable for all-ceramic fixed partial dentures (FPDs).
- Manufacturer recommendations limit In-Ceram use to anterior FPDs due to strength concerns.
Purpose of the Study:
- To evaluate the clinical longevity of In-Ceram alumina FPDs, specifically testing posterior applications.
- To determine failure factors in In-Ceram FPDs under clinical stress.
Main Methods:
- A prospective clinical trial involving 61 three-unit In-Ceram alumina FPDs.
- Abutment teeth prepared for full crowns; FPDs cemented with glass ionomer cement.
- Follow-up over three years to assess longevity and analyze failures.
Main Results:
- Zero failures occurred in anterior FPDs (100% success rate).
- Posterior FPDs exhibited failure rates of 11% for premolars and 24% for molars.
- Seven FPDs fractured at the connector area during the study period.
Conclusions:
- In-Ceram alumina is reliable for anterior FPDs.
- The use of In-Ceram alumina for posterior FPDs is not supported by these findings.
- Glass ionomer cement is a predictable luting agent for In-Ceram FPDs with minimal side effects.