Red dye is used to disclose areas of plaque. Here, the plaque is being dislodged and removed with a toothbrush. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Ted Croll |
Taille de l’image : | 4214 px × 2763 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |