amalgam: a mixture of mercury, silver, tin and copper used to fill cavities

bleaching: cosmetic whitening of teeth

burning mouth syndrome: a condition characterized by a burning or scalding pain on the lips and tongue

bruxism: the unintentional grinding or clenching of teeth that may cause facial pain

canker sore: ulcers that occur inside the mouth and are often are triggered by trauma to the inner cheek or gum

caries: also known as cavities, tooth decay

cold sore: tiny, clear, fluid-filled blisters that form around the mouth and are caused by the herpes simplex virus

composite resin: a tooth-colored plastic and glass mixture used to restore decayed teeth

cosmetic dentistry: aesthetic improvement of the color and shape of teeth

crown: a restoration that covers, or "caps," a tooth to restore it to its normal shape and size, strengthening and improving the appearance of a tooth

denture: a removable replacement for missing teeth and adjacent tissues

dry mouth: a painful condition caused by a decrease in the amount of saliva in the mouth when salivary glands do not work properly

fluoride: a compound that makes the tooth more resistant to decay and promotes remineralization, which aids in repairing early decay 

general dentist: a primary care provider for patients in all age groups who takes responsibility for the diagnosis, treatment, management and overall coordination of services to meet patients' oral health needs 

gingivitis: an early stage of gum tissue 

halitosis: chronic bad breath

mouthguard: an appliance used to protect teeth from injury 

orthodontics: a branch of dentistry dealing with the treatment of irregular bites

periodontal disease: inflammation and irritation of the gums, which if left untreated, can cause tooth loss

plaque: a sticky substance that forms on teeth and causes tooth decay

root canal: a procedure that repairs the damaged or dead pulp in the root canal of the tooth 

sealant: a plastic coating used to protect teeth from decay 

sleep apnea: a serious, potentially life-threatening sleep disorder in which a person stops breathing episodically during sleep due to an obstructed airway

temporomandibular disorder: problems relating to the temporomandibular joint, including locking of the jaw, frequent headaches, sore jaw muscles and painful clicking of the jaw

wisdom teeth: the third molars, which typically erupt during the teenage years