| Abscess | A localized infection in the bone or soft gum tissues, usually at the end of the root tip. Treated with antibiotics and possibly a root canal, performed by an endodontist. |  |
| Abutment | The natural teeth that holds a fixed or removable bridge in place. | |
| Air Abrasion | A device that uses tiny particles of aluminum oxide blasted in a stream of air at the tooth to remove the decayed debris and ruined enamel of cavities. This procedure usually eliminates the need for anesthesia, though it is not usable for all procedures where a drill has normally been used. | |
| Amalgam | The most common filling material used for fillings, also referred to as mercury or silver, which are often contained in the mixture. Alternatives are composite resins, and gold or porcelain inlays. | |
| Anesthesia | Drugs and procedures that relieve the sensation of pain. Various types include general anesthesia, IV sedation, needle-less anesthesia and local anesthesia. | |
| Anterior | An adjective used to describe things pertaining to your Centrals, Laterals and Cuspids (your front teeth). | |
| Aspirator | A tube like a straw which the dentist puts in your mouth to suck up all the saliva. | |
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