You could try a happy mouth snaffle, a nathe bit. Very gentle. And maybe try a nose net for head flicking
If they dont like a regular snaffle try a double jointed snaffle! Some find it more comfy. Also rubber and leather bits can be grest depending on the horse!
Hey, if your horse has a sensible mouth you might wanna try the Stübben Golden Wings.
It is made with a special protection.
Hi Lauren, as a first step I should call my dentist to make sure that everything is ok, no injuries. After, if everything is ok i will try a very basic bit as mild and comfortable as possible.