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Three-year clinical evaluation of CAD/CAM restorations
B P Isenberg1, M E Essig, K F Leinfelder
1University of Alabama, Birmingham School of Dentistry 35294.
Journal of Esthetic Dentistry
|September 1, 1992
Summary
Dicor and Vita ceramic inlays and onlays showed similar clinical performance over 3 years. Fractures occurred due to insufficient cavity depth, not material type.
Area of Science:
- Restorative Dentistry
- Dental Materials Science
Background:
- Dental inlays and onlays are common restorative options.
- Ceramic materials like Dicor and Vita porcelains are widely used.
- Composite resin luting agents are essential for cementation.
Purpose of the Study:
- To clinically evaluate the long-term performance of Dicor and Vita ceramic restorations.
- To compare the efficacy of different duo-cured composite resin luting agents.
- To identify factors influencing restoration success and failure.
Main Methods:
- Clinical evaluation of 121 inlays and onlays made from Dicor and Vita porcelains.
- Cementation using three distinct duo-cured composite resin luting agents with varying particle sizes.
- Assessment of clinical performance over a 3-year period using the United States Public Health Service System criteria.
Main Results:
- No significant difference in clinical performance between Dicor and Vita ceramic restorations.
- Comparable color matching, marginal integrity, and overall clinical success for both materials.
- Seven restorations fractured through the isthmus, linked to inadequate cavity depth.
Conclusions:
- Dicor and Vita ceramics demonstrate similar long-term clinical efficacy for inlays and onlays.
- Proper cavity preparation is crucial to prevent restoration fractures.
- Both ceramic types, when properly placed, offer excellent clinical performance.