When treating a cavity, your dentist removes the decayed portion of the tooth and then "fills" the area on the tooth where the decayed material was previously located. Fillings are also used to repair cracked or broken teeth and teeth that have been worn away from improper use. The dentist numbs the area around the tooth with a local anesthetic. Next, a drill, air abrasive tool, or laser is used to remove the damaged area. The choice of instrument depends on the dentist's individual comfort level, training, and investment in the specific equipment, as well as the location and extent of caries.
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