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Dental Crowns and Bridges
RestorativeA crown can also be placed on top of an implant to provide a tooth-like shape and structure for function.
Reasons you may need a crown:
• You have a cavity that is too large for a filling
• You have a tooth that is cracked, worn down, or otherwise weakened
• You have had root canal treatment — the crown will protect the restored tooth
• You want to cover a discolored or badly shaped tooth and improve your smile
What is your crown made from?
Crowns are made from several types of materials. Metal alloys, ceramics, porcelain, porcelain fused to metal, or composite resin may be used. When a crown is made, the material often is colored to blend in with your natural teeth.
Your dentist wants your crown to look natural and fit comfortably in your mouth. To decide which material to use for your crown, your dentist will consider many factors, such as: the tooth's location and function, the position of the gum tissue, your preference, the amount of tooth that shows when you smile, the color or shade of the tooth.
Crowns can be made of a variety of different materials. They are listed below: –
Metal crowns withstand biting and chewing forces well. Also, metal crowns rarely chip or break. The metallic colour and they tend to wear the opposite teeth are the main drawbacks.
Porcelain-fused-to-metal dental crowns can be colour matched to your adjacent teeth (unlike the metallic crowns). These crowns can be a good choice for your back teeth.
All-ceramic or all-porcelain dental crowns provide better natural colour match than any other crown type and may be more suitable for people with metal allergies and an esthetic sensibility.
Zirconia or milled crowns which are digitally constructed come with very precise engineering and a long term warranty.
Dental bridges literally bridge the gap created by one or more missing teeth.
A bridge is made up of two or more crowns for the teeth on either side of the gap -- these two ormore anchoring teeth are called abutment teeth -- and a false tooth/teeth in between.These false teeth are called pontics and can be made from gold, alloys, porcelain, or a combination of these materials. Dental bridges are supported by natural teeth or implants.
Why you need a bridge
A missing tooth is a serious matter. Teeth are made to work together. When you lose a tooth, the nearby teeth may tilt or drift into the empty space. Your teeth in the opposite jaw may also shift up or down into the space. This can affect your bite and place more stress on your teeth and jaw joints, possibly causing pain and damage.
Teeth that have tipped or drifted are also harder to clean. This puts them at a higher risk for tooth decay and gum disease.
When a tooth is missing, the bone may shrink. If that happens, it may change the way the jawbone supports the lips and cheeks. Over time, this can make your face look older.