Alveolar process: the curving part of the jaw that holds teeth.
Alveolus: an opening in the alveolar into which the tooth's root fits.
Ankylosis: a condition where two hard tissues (e.g. a tooth and the alveolar bone) are fused together.
Bruxism: frequent grinding or clenching of the teeth, typically during sleep.
Cavity: a hole in the tooth that is caused by tooth decay.
Cementum: hard tissue that covers the tooth root.
Cleft lip: a birth defect resulting in a gap in the skin of the upper lip.
Cleft palate: a congenital deformity resulting in a split or opening in the roof of the mouth.
Clenching: the grinding of teeth, often because of stress or physical effort.
Cusp: the pointed portion of the tooth.
Cyst: an abnormal sac containing fluid or soft matter.
Dentin: the part of the tooth immediately under the surface enamel.
Dry mouth: decrease in the production of saliva (a.k.a. xerostomia).
Dry socket: inflammation of the tooth socket after extraction due to infection or the failure of a blood clot to form.
Erosion: chemical-induced wearing down of tooth structure.
Gingival hyperplasia: an overgrowth of gingival tissues.
Gingivitis: the early, milder form of gum disease that may cause gums to become red, swollen and prone to bleeding.
Interproximal: between adjacent teeth.
Intraoral: inside the mouth.
Lesion: area of diseased tissue.
Lingual: pertaining to or nearby the tongue.
Maxilla: the upper jaw.
Molars: the three back teeth on either side of the jaw used for grinding food.
Mouthguard: a device that inserted into the mouth to protect against injury, treattemporomandibular joint (TMJ) disorders or prevent tooth grinding.
Plaque: the sticky, bacteria-laden substance constantly building up on teeth.
Pulp: soft, spongy tissue that is located in the center of the tooth and contains blood vessels and nerves.
Pulp cavity: the portion of the tooth that contains the pulp.
Root canal: the portion of the pulp cavity that contains pulp tissue.
Stomatitis: inflammation of the mucous membrane of the mouth.
Temporomandibular joint (TMJ) disorder: abnormal functioning of the TMJ; may cause facial pain and compromise the ability to open or move the jaw.