Even though Speedy gets his teeth done annually, Dr. Tolley had to do quite a bit of work on his mouth. Speedy had developed some sharper edges that needed to be smoothed out, and his canine teeth had some plaque. That was a new one for me; I didn't know horses got plaque. Dr. Tolley explained that it is probably because a lot of saliva gathers around those canine teeth. After giving Speedy his spring vaccinations, he was done.
He likened it to immunization - by using the Xterra paste the first year and following it up with cryotherapy the second year, Izzy built up enough antibodies to the virus that causes sarcoids that he was able to fight off the second one on his own.
Izzy's teeth had fewer sharp points than did Speedy, so his dental work was very minor. And with that, he was done.