noun
plaque
A sticky layer of bacteria that builds up on teeth.
The dental diagram shows plaque along the gumline.
Etymology
The French word names a plate or patch. Dentistry applies that surface-layer image to the bacterial film that adheres to teeth.
More examples
- The dentist discussed plaque.
- Brushing removed some plaque.
- The model highlighted a plaque deposit.
Forms
plaque
Similar words
- tartar
- Hardened dental deposits rather than the soft bacterial film.
- biofilm
- The broader category of attached microbial communities.