Caries Marker dyes carious dental substance
to reveal remaining carious areas after removal of the visible caries
to provide a clear boundary between carious and healthy dentine, especially on secondary dentine which is different in shade
to check if caries has been removed completely
to trace carious areas which are difficult to see
to demonstrate carious areas to the patient
for training and teaching purposes (on extracted teeth)
for finding obliterated root-canals
for finding micro-cracks in fillings and margins