Photosensitisation

Protosensitising Agents

• Phenothiazine which was used as an anthelmintic
• Tetracycline - if one injects bitches with tetracycline when pregnant, puppies are born with brown teeth, which fluoresce under UV light.
• Haemosiderin may also produce pinky / brown colour to teeth usually due to damage and haemorrhage into tooth.