a. Care of the mouth and teeth by daily use of a toothbrush and
dental floss after meals is essential. This care may prevent gum disease,
infection, and tooth decay.
b. One of the major causes of tooth decay and gum disease is
plaque. Plaque is an almost invisible film of decomposed food particles
and millions of living bacteria. To prevent dental diseases, you must
effectively remove this destructive plaque.
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