Green Prairie Animal Hospital · Large Animal & Equine Care · Mason County, IL
Your horse is dropping feed while he eats. He’s losing weight despite having plenty of hay in front of him. He’s tossing his head under saddle or resisting the bit in ways he never used to. You’ve checked everything else — but when did someone last look in his mouth?
Dental problems are one of the most commonly missed sources of pain and poor performance in horses. They develop gradually, they’re hidden inside the mouth, and horses are built to keep eating through discomfort until it becomes significant. This post covers what equine dental care actually involves, what to watch for, and when to call a large animal veterinarian in central Illinois.
How Horse Teeth Are Different From Everything Else
Horse teeth are hypsodont — meaning they have a long crown that erupts gradually from the jaw over the horse’s lifetime rather than a fixed root structure like human teeth. A horse is essentially born with a finite amount of tooth that slowly pushes up through the gumline over decades of use.
This continuous eruption is what makes equine dentistry an ongoing management issue rather than a fix-it-once situation. As the teeth erupt and wear against each other, uneven surfaces develop. The upper jaw in horses is wider than the lower jaw — a condition called anisognathia — which means the outer edges of the upper cheek teeth and the inner edges of the lower cheek teeth don’t wear evenly. Sharp enamel points develop on those unworn edges over time.
Those points cut into the cheeks and tongue. Every bite of hay, every movement of the jaw while chewing, creates friction against soft tissue that was never designed to contact enamel. A horse with significant sharp points is not occasionally uncomfortable. He is uncomfortable every time he chews — which for a horse that should be eating 16 or more hours a day is essentially constant.
What Floating Actually Is
Floating is the term for filing or grinding down sharp enamel points and correcting uneven wear surfaces on equine teeth. The tool used is called a float — historically a hand-held rasp, now more commonly a motorized instrument that allows more precise and efficient work.
A proper equine dental exam involves more than running a float over the teeth. The veterinarian evaluates the entire oral cavity — checking for sharp points, hooks (overgrowths that develop at the front and back of the cheek tooth arcades when upper and lower teeth don’t align properly), waves (an uneven grinding surface that develops across the arcade), ramps, steps, and any loose, cracked, or infected teeth.
Sedation is standard for a thorough equine dental exam. A horse that is lightly sedated allows the veterinarian to fully open the mouth, use a speculum — a device that holds the mouth open safely — and examine and treat the back teeth, which are the ones most likely to have significant issues and the ones that are completely inaccessible in an unsedated horse. Anyone performing equine dentistry without sedation is not seeing the whole mouth.
Most adult horses in regular work need floating once a year. Horses with known dental issues, seniors, or young horses in the tooth transition years may need evaluation every six months.
Young Horses Have a Dental Window That Matters
Between the ages of roughly two and a half and five years, horses shed all 24 of their deciduous teeth — baby teeth — and replace them with permanent adult teeth. This transition period is one of the most important windows for equine dental monitoring and one of the most commonly overlooked.
Retained caps — deciduous teeth that don’t shed cleanly when the permanent tooth pushes up beneath them — are common during this period. A retained cap sits on top of the erupting permanent tooth, preventing it from coming in correctly and causing significant discomfort. Young horses with retained caps often show resistance to work, difficulty bending, and changes in behavior under saddle that get attributed to training issues rather than dental pain.
Wolf teeth — small, vestigial premolars that erupt just in front of the first cheek tooth — are also addressed during this period in most performance horses. Wolf teeth sit directly where the bit rests and can cause significant discomfort and resistance. Removal is a straightforward procedure performed under sedation and resolves the issue permanently.
Young horses should be evaluated by a veterinarian at least twice a year during the two-to-five age range. Catching retained caps and wolf teeth early prevents the behavioral and performance problems that develop when they’re missed.
Senior Horse Dental Care Is a Different Problem
On the other end of the age spectrum, horses over 20 face dental challenges that are distinct from what younger horses deal with. As the finite reserve of tooth is gradually used up over decades of wear, seniors develop shorter, smoother teeth that lose the ability to grind forage effectively.
Smooth mouth — the condition where cheek teeth have worn down to near the gumline and lost their grinding surface — means a horse can no longer process long-stem hay efficiently. These horses need their diet adapted — soaked hay cubes, complete senior feeds, beet pulp — to compensate for what their teeth can no longer do mechanically.
EOTRH — Equine Odontoclastic Tooth Resorption and Hypercementosis — is a painful condition increasingly recognized in older horses where the roots of the incisors (the front teeth) and sometimes canines are resorbed and replaced with abnormal cement-like tissue. Affected horses show obvious discomfort when the incisors are touched, reluctance to take treats or graze, and weight loss. Diagnosis requires dental radiographs — X-rays of the tooth roots. Treatment is extraction of the affected teeth, which sounds dramatic but typically produces significant and rapid improvement in comfort and quality of life.
Senior horses should be evaluated every six months. Annual floating is not sufficient when the problems that develop with age require more frequent monitoring to manage well.
Signs Your Horse Needs Dental Attention Now
Some dental problems announce themselves clearly. Others are subtle enough that they get attributed to something else for months before the real cause is identified.
Watch for these:
Quidding — dropping partially chewed wads of hay from the mouth — is the most obvious sign of dental pain. The horse is trying to chew but the discomfort or mechanical dysfunction is causing feed to fall out rather than be swallowed.
Weight loss despite adequate feed is another classic indicator. A horse that can’t chew effectively can’t extract nutrition from what he’s eating. The hay goes in and comes out largely unprocessed.
Resistance under saddle — head tossing, bit evasion, reluctance to bend or flex — is frequently dental in origin. The bit sits directly adjacent to the cheek teeth, and a horse with sharp points or wolf teeth feels bit pressure differently than a horse with a balanced mouth.
Foul smell from the mouth or nostrils can indicate a tooth root abscess — an infection at the root of a cheek tooth that produces a characteristic odor and sometimes a visible swelling along the jaw or drainage from one nostril. This is a veterinary emergency, not a wait-and-see situation.
Slow eating or meal stretching — a horse that used to finish his hay in a predictable timeframe and now takes significantly longer — often reflects dental discomfort slowing the chewing process.
Green Prairie Animal Hospital Serves Mason County Horse Owners
For horse owners in Mason County and across central Illinois, Green Prairie Animal Hospital’s San Jose location handles all equine dental care — annual floating, young horse evaluations, senior dental assessment, wolf tooth extraction, and dental radiographs when tooth root issues require imaging.
The San Jose team does farm calls throughout Mason County — equine dental work is performed on your property under sedation, which means no hauling required for routine care. As an AAHA-accredited clinic, the protocols behind every exam and every procedure meet the highest standards in veterinary medicine. That means current techniques, properly maintained equipment, and a team that stays trained.
Don’t wait for obvious symptoms to schedule dental work. By the time quidding or weight loss is visible, the dental problem has usually been developing for months. An annual exam on a consistent schedule catches issues early — when they’re straightforward to address rather than significant to manage.
Call San Jose for Equine Dental Care in Central Illinois
Green Prairie Animal Hospital’s San Jose location is our large animal and equine center for Mason County and central Illinois. Our team handles horses, cattle, and livestock — and we do farm calls.
