Why does my 6yr toss his head when I apply direct contact with bit?

I recently acquired an 11 year old TB who tosses his head badly. I took him to be floated yesterday and the vet told me his mouth was a wreck. I can't wait to see if this will make a difference. Dr. Told me his mouth was so bad that I should wait a week to bit him up because he'll be so sore and he will basically have to learn how to chew again. YOU NEVER KNOW what's going on in their heads or mouths if you haven't owned them since birth!!!

]I recently acquired an 11 year old TB who tosses his head badly. I took him to be floated yesterday and the vet told me his mouth was a wreck. I can't wait to see if this will make a difference. Dr. Told me his mouth was so bad that I should wait a week to bit him up because he'll be so sore and he will basically have to learn how to chew again. YOU NEVER KNOW what's going on in their heads or mouths if you haven't owned them since birth!!!

Check his teeth. I had the same promblem with my 4 year old appy. Ended up being his teeth. He had these really nasty sores on his cheeks. After his teeth were done started riding a week later whole different horse. ANd if its not his teeth try asking him differently for his head if you have anyquestion on how just ask. Hope this helps you. Good luck