🦠microbiology review

Plaque

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

Plaque is a sticky, colorless film of bacteria and sugars that constantly forms on our teeth. It is the primary cause of cavities and gum disease.

5 Must Know Facts For Your Next Test

  1. Plaque contains bacteria that produce acids after you eat or drink, which can damage tooth enamel and lead to decay.
  2. Accumulation of plaque can lead to tartar (calculus), which is harder to remove and can cause periodontal disease.
  3. Effective removal of plaque through daily brushing and flossing is crucial in maintaining oral health.
  4. Plaque buildup can also contribute to bad breath by harboring odor-producing bacteria.
  5. Diet plays a significant role in plaque formation; sugary foods and drinks provide an ideal environment for bacterial growth.

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