Oral hygiene crossword

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Across
  1. 4. Soft, strong thread used to clean between the teeth
  2. 5. A paste for cleaning teeth
  3. 6. The pink tissue at the bottom of teeth
  4. 8. The hardest substance in your body
  5. 9. The part of the tooth below the gums
  6. 10. A hole in the tooth caused by tooth decay
Down
  1. 1. Large back teeth used for grinding your food
  2. 2. A soft, sticky, whitish film attached to tooth surfaces
  3. 3. A brush for cleaning the teeth
  4. 7. A person whose profession is dentistry