Gold alloys contain gold, copper and other metals that results in a strong effective filling, crown or bridge.

Gold alloys are primarily used for inlays, onlays, crowns and fixed bridges.

There are two form of gold fillings, cast gold fillings(gold inlay and onlay) made with 14 or 18 kt gold and gold foil made with pure 24 kt gold.

IMAGES
TYPES:
1.GOLD INLAY
Gold inlay is basically gold filling which fits within the contours of tooth. The gold inlay involves the occlusal and proximal surface of posterior tooth and may cap one or more but not all of the cusps.

Gold inlay is custom crafted in dental laboratory to precisely fit tooth so it takes two appointments to restore tooth with an inlay.

INDICATION:
    1. Replace over amalgam restoration.
    2. When proximal surface caries is extensive.
    3. Gold inlay restorations for class-1, class-4, class-5, and class-6 cavity.

2. GOLD ONLAY
Gold onlay involves the proximal surface of a posterior tooth and caps all of the cusps.

A gold onlay covers and protects the biting surface of a tooth that is severely damaged and not possible with dental filling.

INDICATION:
    1. In posterior teeth after root canal treatment.
    2. As a splinting to improve stability of the teeth.
    3. Partial coverage of posterior teeth where significant loss of coronal dentine.

ADVANTAGE:
    1. Strength (can withstand occlusal forces)
    2. Long lasting life (at least 10 to 15 years)
    3. Naturally beautiful
    4. Gold is pliable.
    5. Gold is versatile.

DISADVANTAGES:
    1. Expensive
    2. Galvanic shock
    3. More visit