The use of motorized dental equipment has become quite popular and is now commonly used by many veterinarians and equine dental
technicians around the world.
The use of motorized gear began at least 60 years ago in Germany with rotary grinding wheel stones used to shape and cut teeth.
During World War II, this type of technology was lost; and as the importance of horses fell, following the war, the art and
science of equine dentistry withered to the occasional manual removal of enamel points.
Equine dentistry was not considered to be very important and received very little attention by veterinary educational programs.
As horses have regained importance and numbers over the past 20 years, so has the demand for more thorough and advanced equine
Manual floating of teeth is usually very effective for routine dental maintenance, which includes the floating of points,
leveling waves and establishing bit seats; but it may be more time-consuming and tiring.
Good dental prophylaxis requires strength, dexterity, very good coordination and technique. Motorized equipment can speed
the work and reduce physical wear and tear on shoulders, elbows and wrists. Motorized equipment is very helpful on big jobs,
like reducing big hooks, ramps, and reducing incisors and canines. The use of motorized equipment can promote better work
and encourage more people to want to provide equine dental services.
Are there dangers with the use of motorized equipment? Motorized equipment can actually be safer for the horse if used properly,
since it greatly reduces the use of cutters, which may fracture teeth. Good technique may reduce soft-tissue trauma caused
by hand floats that may accidentally scrape the gums and tissues around the teeth.
Danger lies in poor technique. Rotating burrs can grab the tongue or cheek, causing superficial or deep abrasions. Rotary
disc floats are very unlikely to cause significant soft-tissue damage. Grinding a single tooth for a long time without water
cooling can overheat a tooth and damage the inner pulp tissue. This can be easily avoided by only grinding or using a cutting
wheel for very short periods of time on each tooth (going from tooth-to-tooth) or using water-drip cooling. The use of sharp
carbide, titanium-coated or diamond-chip burrs and discs greatly reduces heat production and the time needed to reduce and
shape teeth. Thermal damage has received a lot of attention in equine dentistry articles in horse-related magazines, so practitioners
should be very aware that clients may be afraid of motorized dentistry. This fear may be exaggerated, since almost all practitioners
are aware of this potential hazard and avoid it. I personally have been using motorized equipment for 20 years and have not
seen any cases of thermal damage — signs of which might be seen years later as an open dead pulp chamber —caused by myself
Horses are often sedated for motorized dentistry, and sedation occasionally leads to problems. Narcoleptic horses may fall
down. Intracarotid injections still occur rarely, as do idiopathic seizures. Manual floating of unsedated horses can avoid
the risk of sedation, but unsedated horses may flip over and hurt themselves or strike and hurt the practitioner. Some horses
allow the use of motorized equipment without sedation.
"Over floating" is probably the most common problem that is seen with motorized dentistry. This results from taking too much
off the occlusal surface of the cheek teeth leading to dysmastication, potential loss of weight or TMJ discomfort. Over floating
can also be done with manual tools. It takes time to learn the principles of occlusion and how to balance the mouth while
maintaining or increasing the functional grind of the cheek teeth. Obviously, when making cheek teeth malocclusion corrections,
incisor work is often needed. This over floating gives motorized dentistry a bad name and hurts our profession. Hopefully,
these over-floated horses can be maintained on pellets until their teeth erupt back into occlusion.
Learning to perform dental maintenance with manual floats first is a big help. When we use motorized equipment we have to
keep in mind that we are trying to achieve the same result as hand tools — motorized doesn't mean more. Motorized dentistry
is still hard work, but is often portrayed as an easy way to float horses' teeth and is attracting newcomers to the field.
The danger lies in incomplete or improper training. Two-hour or even two-day courses in the use of motorized gear for beginners
often leads to trouble.