26 July 2012
CROWN | Prosthetic Dentistry
A crown (caps) is a type dental restoration which completely caps or encircles a tooth or dental implant.
INDICATION
- Smile design
- Aesthetically
- Endodontically treated teeth
- Surveyed crown
- Fractured teeth
- Discoloration of teeth
- Extensive damage by decay
- Fractured in old filling
- Correction of contours of teeth
- Use as a retainer for FPD
- Restoration of badly damaged tooth
- Implant supported tooth
- Patient with active caries
- Patient with untreated periodontal disease
a) METAL
1.High nobel alloy - gold
2.Low nobel alloy- platinum,palladium
3.Non nobel alloy-Nickel or chromium
b) PFM ( porcelain fused to metal dental crown)
c) All resin dental crown
d) All ceramic or all porcelain dental crown
GOLD CROWN
IMAGE
ADVANTAGE
- Minimal tooth structure removal
- Healthy environment of gum tissue
- Easy to fit the tooth crown
- Greater retention and strength
- To modify axial tooth contour
- High resistance to deformation
Disadvantage
- Appearance not natural tooth
PFM CROWN
Porcelain fused to metal crowns looks like natural teeth and stronger than ceramic
IMAGE
ADVANTAGE
- Natural teeth appearance
- Strong enough to withstand heavy biting pressure
- Good choice for anterior teeth
DISADVANTAGE
- Dark line found at the crown’s edge.
- Sometime gum recession
- Can be chip or break off
- In heavy bite can wear tooth
ALL CERAMIC CROWNS
IMAGE
ADVANTAGE
- Excellent esthetically
- Excellent for anterior teeth
DISADVANTAGE
- More tooth structure removal necessary
- High skill necessary
We give well-known brand ceramic crowns.
- IPS EMAX CROWN
- PROCERA CROWN FROM NOBEL BIOCARE
- LAVA CROWN FROM 3M ESPE
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