Dental hygiene

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Across
  1. 4. / the hardest and most highly mineralised substance of the body
  2. 5. / The professional term for bad breath
  3. 6. / the soft tissue lining that surrounds the teeth
Down
  1. 1. / An appliance used to gradually move teeth into their proper alignment.
  2. 2. / Tooth decay caused by bacteria.
  3. 3. / Using a special thread-like material to remove plaque and food particles, also a dance move
  4. 7. / Rear teeth used for grinding