I just bought a 9 year old buckskin. The previous owners did not have his teeth floated for 3 years(although they claim they did) he has hooks in his mouth and sores which i will have the vet come out this week. As i was looking at his teeth, i saw that there was black hole with purple lining around it where is root canal is? How do they fix this? Is it curable? I think they root canal has decayed.. But I don't think horses can get root canals? Will they just pull it? I would Like to know what it is. And how to keep the pain to the min until the vet comes.