What Are Dental Crowns?
Dental crowns are prosthetic restorations which are fixed (cemented) onto abutment teeth or implants in order to restore dental esthetics and function.When Do We Use Dental Crowns?
1. When restoration using large fillings is esthetically and functionally inadequate
2. While restoring a tooth after endodontic treatment, which leaves it fragile, dehydrated and prone to cracking
3. In cases of unsatisfactory appearance of the natural tooth
4. In cases of tooth wear
Metal-Ceramic Crowns
They consist of a metal base fused toa crown made out of layered ceramics.
Characteristics:
- Excellent mechanical features
- Good esthetic features
- Most common patients’ choice
Full Ceramic Crowns
They are made out of carved blocks of thickceramics onto which thin porcelain layers are applied.
Characteristics:
- Superior esthetic features
- Translucence (transparency) – permitting light to pass through
- Solidity and biocompatibility
- Great imitation of the natural tooth
- Minimal tooth preparation
Zirconia-Ceramic Crowns
They consist of a high-quality, solidzirconium-oxide base fused to a ceramic crown.
Characteristics:
- Superior esthetic features
- Solidity
- Biocompatibility
- Great imitation of the natural tooth
- Indicated to restore nearly all dental issues