1. Cavity: missing tooth structure. A cavity may be due to decay, erosion or abrasion. If caused by caries; also referred to as the carious lesion.
2. Abscess: acute or chronic localized inflammation, probably with a collection of pus, associated with tissue destruction and, frequently, swelling; usually secondary to infection.
3. Decay: decomposition of tooth structure.
4. Enamel: hard calcified tissue covering dentin of the crown of tooth.
5. Incisors: a tooth for cutting or gnawing; located in the front of the mouth in both jaws.
6. Molar: teeth posterior to the premolars (bicuspids) on either side of the jaw; grinding teeth, having large crowns and broad chewing surfaces.
7. Scurvy: a disease caused by a deficiency of vitamin C, characterized by swollen bleeding gums and the opening of previously healed wounds.
8. Plaque: a soft sticky substance that accumulates on teeth composed largely of bacteria and bacterial derivatives.
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