Cavities

Ninety percent of the population has cavities despite widespread fluoride use. Teeth are biologically designed to be essentially indestructible, as evidenced by ancient skulls retaining intact teeth. A cavity is a hole in the tooth caused by dental decay, where the bone tissue dissolves and breaks down. Bacterial metabolism of sugar is presented as the cause of cavity development. Tooth enamel does not regenerate like most body tissues because it lacks cells that are constantly replaced. Cavities result from bacteria that feed on sugar. Cavities are not caused directly by eating sugar.