Tooth decay is the destruction of tooth structure. Tooth decay can affect both the enamel (the outer coating of the tooth) and the dentin layer of the tooth (see diagram) and in some cases extend into the pulp (nerve).
Cavities occur as a result of tooth decay.
Who Gets Cavities?
Many people think cavities affect children only, but changes that occur with aging make cavities an adult problem, too. Recession of the gums (a pulling away of gum tissue from the teeth), often associated with an increased incidence of gum disease, can expose tooth roots to plaque. Also, sugary food cravings in pregnant women can make them more vulnerable to developing cavities.
IT IS GOOD TO KNOW
Cavities Are Here To Stay
Decay around the edges of fillings is also common in older adults. Because many older adults lacked the benefits of fluoride and modern preventive dental care when they were growing up, they often have a number of dental fillings. Over the years, these fillings may weaken and can fracture, allowing bacteria to accumulate in the tiny crevices and cause tooth decay.
