Enamel, which is the visible part of the tooth, has no living cells so it cannot repair damage from decay. Only a dentist can correct these conditions.
If left untreated, periodontal disease can lead to tooth loss. Research indicates that periodontal diseases may contribute to diabetes, respiratory diseases, heart attack, stroke, or be associated with premature childbirth.
More that 300 types of bacteria make up dental plaque.
The Guinnes Book of World Records lists periodontal disease as the #1 disease afflicting mankind.