He's a 24yr old, who at 4 years old had two top teeth removed on the left as looking at that photo.
He had 6 monthly dentals, as the two at the bottom were unopposed. As he got older, this was dropped to yearly, always making sure that the unopposed teeth were kept rasped.
It now appears that he pretty much chewed exclusively on the right hand side (on this photo) his whole life.
These teeth are pretty much worn away. The first and last at the top have both come out.
The xrays are amazing! On his right we have teeth probably a little longer than you would expect in a horse his age. On his left, just little stumps left.
He also has diastema on the worn out side, which have been widened, so regular flushing is required.
I just find it fascinating to see like that.
He manages short forage easy, longer is harder. All his feeds are now slops, and he's doing fine. He also has cushings.
My boy also has cushings, diagnosed nearly 3 months ago (but probably had it for a year or two before that without realizing what was happening)
I'm a bit fascinated by horses teeth and what sets them off. In January my boy had the third of three surgeries to remove all his incisors as we lost the battle with EOTHR. I put off the surgery for so long, thinking it'd be the end of him. And while, yes, he was very very confused for a few weeks when the final 4 incisors came out (picture a horse standing in the paddock and licking the grass for 9 days), he has bounced back incredibly and doesn't appear to realize he doesn't have any front teeth.
I asked my son VERY late last night who commented 'one side worn and the other side not' but didn't offer why that might be as we were arguing about hay! Horses can manage with some dreadful things going on in their mouths, but I say 'manage'. I know it's an added expense, but thank heavens it's so easy now to find a good dentist.