What does floating mean in horse riding?

Floating is a veterinary procedure performed on a horse to rasp and smooth rough edges of the teeth. It is necessary for the horse's dental health as these edges can cause discomfort, pain and even injury to the horse. During the procedure, the horse is sedated and a rasp is used to file down any sharp points or edges on the teeth. Floating helps to keep the horse's teeth healthy and prevents any potential problems. It should be done regularly, usually every 6-12 months, depending on the breed, age, and diet of the horse.