CROWN AND BRIDGE

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• All Metal Crown
• All ceramic crown
• Porcelain fused metal

All metal crown

All metal crowns are fabricated entirely out of metal There are two types of metal alloy one is gold and another one is silver. Nowadays silver silver-colored metal crowns are mostly used. They are used to replace upper and lower posterior teeth.

Advantages of all metal crown

• They have maximum strength.
• They have maximum durability.
• They are cheaper in price.
• Conservative preparations are required
• Highly compatible.

Tooth Coloured Crown

There are two types.

• Porcelain Fused to Metal(PFM)
• All ceramic crown

Porcelain fused to metal(PFM)

In this crown, the core or inner layer of the crown is made up of a metal substructure porcelain is bound to metal chemically and mechanically on the outer surface . The external surface of the crown is fabricated using ceramics. Two types of PFM Conventional type/hand-made by lab technicians.

CAD-CAM crown (computer-aideddesign and computer-aided manufacturing software)

CAD-CAM CROWN:

In this crown the core of the crown or inner layer of the crown is made up of a metal substructure .porcelain is bound to metal chemically and mechanically on the outer surface. The external surface of the crown is fabricated using ceramics. In the esthetic zone where strength is also required in the upper premolar and molar also in the lower posterior teeth. This is also good option for anterior teeth when all-ceramic crowns are not feasible for the patient.
There are two types of PFM

• Conventional type/hand-made by lab technicians.
• CAD-CAM crown(computer-aided design and computer-aided manufacturing software)

Advantages

• Very precise fit and good margin adaptation
• Natural tooth-like appearance.
• They are cheaper in price.
• These crowns also come with a warranty ranging from 5-15 years.
• Cheaper than all ceramic crowns.
• Metal inside this crown gives it strength

Disadvantages

• In PFM crown porcelain is fused to metal cap as result comparatively thinner layer of translucent porcelain can be placed as compared to all ceramic crown. this little bit compromise the look of natural tooth like appearance of PFM crown as compared to all ceramic crown.
• With time when gum recess bluish or blackish line of metal may be visible around your gum line.
• More tooth reduction is needed as compared to all metal crown

All Ceramic crown

Crown is entirely made up of ceramic without metal. All ceramic crown is indicated in anterior tooth.
There are two types of all ceramic crown Zirconia Crown E-max Crown

Advantages:

SUPERIORLY ESTHETICS.
METAL FREE.
HIGH STRENGTH.
BIOCOMPATIBLE

Disadvantages
Costly
More tooth reduction is required than another crown
Not repairable

EMAX CROWN

The difference between zirconia and EMAX is more translucent than zirconia. This crown allows more light and creates more life like crown.