Tooth decalcification is a process by which the teeth lose calcium. It's generally considered an early stage of tooth decay, and typically causes white spots to appear on the teeth. Tooth decalcification can usually be reversed if proper oral hygiene measures are followed, but it can lead to irreversible dental caries. This condition typically occurs due to a build-up of plaque on the surface of the teeth, often due to poor dental hygiene. The wearing of braces can also lead to tooth decalcification, since it is often nearly impossible to adequately clean the surface of the teeth beneath the brackets.

Proper dental hygiene generally consists of regular brushing and flossing, at least twice a day, combined with annual or semi-annual dental check-ups. Tooth decalcification, and eventual decay, most often occurs as a result of poor dental care. When teeth aren't properly cared for, plaque, a sticky, opaque substance comprised mostly of bacteria, is allowed to build up on the teeth. The bacteria in plaque normally produce acids that can damage tooth enamel, leaching its calcium away in the process known as decalcification.

Dentists generally believe that the first sign of tooth decalcification is the appearance of a white spot on the tooth. As the surface of the tooth loses calcium, it becomes more opaque, so that bright white spots can appear. These spots are considered highly likely to become areas of tooth decay if left untreated. Many dentists recommend a professional dental cleaning as a first step towards treating tooth decalcification. Following the dental cleaning, most dentists will recommend a program of enhanced dental care that may require a series of office visits as well as home care.

Fluoride treatments are often used to combat tooth decalcification. Some dentists may wish to cover the teeth with bonding resin or porcelain crowns, if the damage is severe. Brushing and flossing are typically considered vital parts of the home care for teeth in this condition. Mouthwashes, home fluoride rinses, and other home care solutions may be recommended.

Persons who are suffering tooth decalcification may need regular and frequent dental checkups until the problem is resolved. If decalcified areas develop into dental cavities, treatment may involve filling the decayed tooth, fitting it with a crown, or extracting it altogether.