Dental crown is a tooth-shaped "cap" or restorations that protects damaged, cracked or broken down teeth. A crown strengthens your existing, damaged tooth so as to preserve its functionality. Dental crowns are also commonly known as caps (because a crown sits over your existing tooth, covering the entire outer surface).
The first stage of the process is to clean the tooth, remove any decay and reshape it using a burr which is a special dental drill for shaping teeth under local anesthesia. The shape of the prepared tooth is usually tapered to allow the crown sit comfortably over the top of it. Once the tooth is prepared, an impression of your teeth will be taken using special "dental putty". This impression is sent to a dental laboratory, which will use the impression of the prepared tooth as a guide to fabricate the new crown to fit perfectly. It usually takes between two to three weeks for a laboratory technician to custom-fabricate your new crown. During this intervening period, your dentist will fit you with a temporary crown to cover and protect your prepared tooth.
On your second visit, your dentist will remove the temporary crown and roughen the outer surface of your prepared tooth with a special etching acid to give the dental cement a good surface to bond to. Your dentist will place the crown over your damaged tooth to see if it fits with your smile correctly and is the right color and shape. Once satisfied with the restoration and how it looks, your dentist will cement the crown firmly into place.
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