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A dental crown is a tooth-shaped “cap” that is placed over a tooth — to cover the tooth to restore its shape and size, strength, and improve its appearance. It fits right over the top of the tooth, covering the entire structure through to the gum line. They cover, protect and seal the tooth to strengthen it.
They are necessary when:
• There is a large section of tooth decay, so that a filling will not suffice.
• To remedy large old fillings that have broken down or are surrounded by decay.
• When a tooth is cracked and a filling will not suffice.
• When a tooth is fractured or broken
Types of Crowns
METAL Crown
These include gold, stainless steel , or a base-metal alloy ( nickel or chromium). These can be used in posterior teeth where minimal reduction is required. They withstand biting and chewing forces well and probably last the longest in terms of wear down.
PORCELAIN FUSED TO METAL Crown
These crowns have a metal base and a porcelain coating on them. They can be color matched to your adjacent teeth (unlike the metallic crowns). Next to all-ceramic crowns, porcelain-fused-to-metal crowns look most like normal teeth.
These crowns can be a good choice for front or back teeth.
METAL FREE ZIRCONIA CROWNS
These crowns do not have any metal in them.
They provide excellent natural color match than any other crown type.
They are ideal for smile corrections. .
Can be used for both front and back teeth
Dental bridges literally bridges the gap created by one or more missing teeth. A bridge is made up of two or more crowns supported on a tooth, one on each side of the gap . It helps in restoring the chewing capacity as well as aesthetics.