Crowns, also known as “caps”, Have been around for centuries. More often than not, a crown is used to restore function and aesthetics to a fractured or worn tooth. Teeth can fracture as a result of grinding or clenching (refer to TMJ and Orthotic appliances)or because an old large filling has been undermined with decay. When a tooth can no longer be restored with a “filling” a crown is indicated. Its strength relies on the fact that the crown encompasses the weakest portion of the tooth and protects it under load. As with bridges, crowns can be made of porcelain, porcelain and metal or just metal. Due to the possibility of allergic reactions, crowns containing metal should only be fabricated of high noble gold alloys. If your tooth is beyond repair with a filling material, we may recommend that the best viable option to save the tooth is a crown.
What To Expect During A Crown Procedure
As with all dental procedures, planning is the most important first step. Understanding what the patient and doctor expect as a final outcome will determine the extent of the preparation, the fabrication type and shade or color of the final prosthesis. In general. the tooth in question, is prepared or miniaturized to accommodate the proper amount of material needed to fabricate the crown with natural contours and without interfering with the bite or occlusion. A provisional restoration is fabricated and placed to restore the dentition during the time that the final prosthesis is being fabricated. In certain circumstances, the provisional restoration, is kept in place for a longer period of time. This may be done to allow tissues to heal, post periodontal surgery, to refine aesthetics or to refine an individual’s occlusion. Prior to fabrication, an impression must be taken to provide the laboratory with a model on which to fabricate the crown.
At the delivery appointment, the crown will be checked for proper fit by the dentist and adjusted as needed. The patient should have the opportunity to visualize the crown and make a request for changes as needed prior to the cementation of the crown. Once the patient is satisfied with both the form and function of the crown, the crown will be either cemented or bonded to the tooth. The patient should advise the dentist immediately if the patient has any difficulty with the crown.