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4-year clinical study of castable ceramic crowns
W P Kelsey1, T Cavel, R J Blankenau
1Department of Operative Dentistry, Creighton University, School of Dentistry, Omaha, NE 68178, USA.
American Journal of Dentistry
|October 1, 1995
Summary
This study assessed Dicor castable ceramic crowns over 4 years. While generally successful for posterior restorations, molar crowns showed a higher fracture incidence, necessitating careful case selection.
Area of Science:
- Restorative Dentistry
- Dental Materials Science
- Prosthodontics
Background:
- Castable glass-ceramic restorations offer aesthetic and biocompatible solutions.
- Evaluating long-term clinical performance is crucial for material selection in posterior teeth.
Purpose of the Study:
- To assess the 4-year clinical performance of Dicor castable glass-ceramic crowns.
- To determine the efficacy of these crowns in restoring posterior teeth.
Main Methods:
- 101 Dicor full-crown restorations were placed in 61 molars and 40 premolars.
- Bonded resin cement was utilized for crown cementation.
- Clinical performance was evaluated over a 4-year period.
Main Results:
- 15 out of 101 restorations failed within 4 years, with 13 failures in molars.
- Serviceable restorations demonstrated excellent color match, margin adaptation, proximal contact, and gingival health.
- 93.5% of restorations showed no cavosurface margin discoloration.
Conclusions:
- Dicor crowns meet aesthetic and biological requirements for posterior restorations.
- Molar restorations exhibited a higher fracture incidence, indicating a need for cautious case selection.
- Further research may be warranted to optimize Dicor crown performance in molars.