To prepare a tooth for a crown you have to visit your dentist at least two times, while the first visit involves examining and preparing the tooth, the second - involves placement of the permanent crown. First Visit: Examining and Preparing the Tooth  On your first visit, your dentist may take a few X-rays to check the roots of the tooth which will get the crown and surrounding bone. If the tooth has a wide rot or if there is a risk of infection or injury to the tooth's pulp, a root canal treatment may be performed first of all.
Before the beginning of the process, your dentist will anesthetize (numb) your tooth and the gum tissue around the tooth. Then, the tooth getting the crown is filed down along the chewing surface and sides to make space for the crown. The amount removed depends on the type of crown used (for instance, all-metal crowns are thinner, requiring less tooth structure removal than all-porcelain or porcelain-fused-to-metal ones). Conversely, if a large area of the tooth is missing (due to rot or damage), your dentist will use filling material to "build up" the tooth to support the crown. After tooth reforming, your dentist will use impression paste or putty to make a feeling of the tooth to receive the crown. Impressions of the teeth over and under the tooth to obtain the dental crown will also be made to make certain that the crown will not influence your bite. Then your dentist will send the impressions to a dental laboratory where the crown will be constructed. The crown is generally returned to your dentist's office in 2 to 3 weeks. If your crown is made of porcelain, your dentist will also choose the tint that most closely matches the color of the neighboring teeth. Throughout this first office visit your dentist will make an impermanent crown to cover and protect the arranged tooth while the crown is being made. As a rule impermanent crowns are made of acrylic and are seized in place using temporary cement. Second Visit: Receiving the Permanent Dental Crown In your second visit, your dentist will eliminate your impermanent crown and verify the fit and color of the constant crown. If everything is satisfactory, he will use a local anesthetic to sedate the tooth and then cement a new crown in place.
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