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All-ceramic restorations: classification and clinical evaluations
1Umeå University, Department of Odontology, Dental School, Sweden.
Compendium of Continuing Education in Dentistry (Jamesburg, N.J. : 1995)
|June 13, 2000
Summary
All-ceramic dental restorations offer aesthetic options but fracture is a common failure, particularly for crowns and inlays. Newer reinforced ceramics demonstrate improved clinical durability compared to older systems.
Area of Science:
- Dental Materials Science
- Restorative Dentistry
Background:
- All-ceramic systems are increasingly used by general practitioners for various dental restorations due to aesthetic demands.
- These materials are employed in veneers, inlays/onlays, and crowns, often utilizing enamel/dentin bonding without macroretention.
Purpose of the Study:
- To classify different commercial all-ceramic systems.
- To review the clinical durability of these systems.
- To identify reasons for restoration failures.
Main Methods:
- Classification of commercial all-ceramic systems.
- Review of clinical durability data.
- Analysis of failure modes for various ceramic restorations.
Main Results:
- Fracture is the primary cause of failure, especially in all-ceramic crowns and inlays.
- Secondary caries adjacent to resin composite luted ceramics occurs infrequently.
- Ditching of luting agents is not a significant long-term clinical issue.
- Certain ceramic materials and luting agents are contraindicated, particularly for molar teeth.
Conclusions:
- Newer reinforced ceramics exhibit superior durability over earlier fired ceramic reconstructions.
- Understanding failure modes is crucial for selecting appropriate all-ceramic materials and techniques.