- by Priya dental clinic
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- Mar 26 2018
What are Dental Crowns?
Dental crown is characterized as a tooth-shaped cap which is placed over a tooth, to cover the tooth to restore its shape, size, strength, and improve its appearance.
When does a Dental Crown Require?
- To protect a weak tooth from breaking.
- To restore an already broken tooth that has been severely worn down.
- To cover a dental implant.
- To make a cosmetic modification.
- To cover discolored teeth.
In children, a crown can also be used on primary teeth to:
- Save a tooth that has been so damaged by decay that it cannot support a filling.
- Protect the teeth of a child, when a child has difficulty keeping up with daily oral hygiene.
Types of crowns
Stainless steel: They are temporarily used on permanent teeth and are prefabricated. It protects the tooth or filling while a permanent crown is made from another material. Commonly they are used over a primary tooth when the primary tooth come out to make room for the permanent tooth, the crown comes out naturally with it. They are very cost effective.
Metals: Alloys that have the high content of gold or platinum, or base metal alloys such as cobalt-chromium and nickel-chromium are used to make dental crowns. They last the longest and withstand biting and chewing.
Porcelain-fused-to-metal: These crowns can be color matched to the adjacent teeth. They look like normal teeth, sometimes the metal underlying the crown’s porcelain can show a dark line. They are the good choice for front and back teeth.
All resin: They are less expensive, wear down over time and are more prone to fractures.
All ceramic or all porcelain: They provide better natural color to the tooth and are more suitable for people with metal allergies.
How Are Dental Crowns Prepared?
You need to visit two times to the dentist for preparing a tooth for a crown.
First visit: Examining and preparing the tooth
The dentist may take a few X-rays to check the roots of the tooth receiving the crown and surrounding bone. If the tooth has extensive decay or there is a risk of infection or injury to the tooth’s pulp then a root canal treatment is performed first.
Before the process of making a crown begins, the dentist will numb the tooth and the gum tissue around the tooth. After this, the tooth receiving the crown is filed down along the chewing surface and sides to make room for the crown. The amount removed depends on the type of crown used.
After reshaping the tooth, the dentist will use a paste to make an impression of the tooth to receive the crown. Impressions are sent to a dental lab where the crown will be manufactured. It returns to dentist usually in two to three weeks.
Second visit: Receiving the permanent dental crown
The dentist will remove the temporary crown and check the fit and color of the permanent crown. A local anaesthetic will be used to numb the tooth and the new crown is permanently cemented in place.
How to Take care of Temporary Dental Crown?
- Avoid sticky, chewy foods, which have the potential of grabbing and pulling off the crown.
- Minimize use of the side of the mouth with the temporary crown.
- Avoid chewing hard foods, which could dislodge or break the crown.
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