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Further down on this page: Equine
Dentistry an article by Dr. Tom Judd, DVM |
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A Dental Procedure with Dr. Judd
(Photos by Mansfield Design)
PDF Version
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Note: In
order to explain certain terms and conditions in more detail, we have provided links
in this article to appropriate sections of Dr. Judd's Equine Dentistry article
that appears further down on this page. Just click on the underlined words to
read the descriptions. |
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Our
model for the day was
Kiwi, an over 30 year old retired NYC police horse who was also used in 3 phase eventing and
dressage. His owner, Sandi, says he still enjoys trail rides, beach rides and
swimming! This is an example of preventative health care and responsible, caring
ownership at its best! |
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Dr. Judd begins a typical dental exam by discussing the horse's current activity
and health, its medical history and any previous issues or concerns with
the owner.
He wears a head lamp to pinpoint light on specific areas of the mouth while
keeping his hands free.
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After rinsing and cleaning out the Kiwi's mouth (above), Dr.
Judd places him in this custom dental stand (left) to help stabilize him
during the exam. The main column of the stand is fitted with sturdy springs that
allow the horse to shift weight slightly while preventing him from tipping over
the stand.
The free-standing nature of this stand allows Dr. Judd the flexibility to
conduct exams inside or outside, depending on the temperament of each horse and
the layout of each barn.
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The speculum (right)
holds Kiwi's mouth open so that Dr. Judd can work safely and efficiently,
even in the back section of the mouth. The cushioned head rest provides a
comfortable surface on which Kiwi can rest his head. |
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(Thanks to
Jan for allowing us to take photographs in her barn, and
to Aleece for allowing us to use these three pictures of
Carmen on our site.)
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Dr.
Judd performs a visual exam and palpation in order to assess the condition of
the horse's mouth and teeth. He takes this opportunity to briefly assess
other aspects of the horse's general health by checking facial symmetry and
probing for irregularities, checking the condition of the horse's skin and mouth
tissue, checking hydration, capillary refill time and general gum color and consistency. |
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While
the medical information is discussed, Vicki administers sedative in
a dose that keeps Kiwi quiet during the exam, but allows him to wake by the time
the exam is over. Dosage depends on the size and condition of
the horse and its medical history.
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Dr. Judd takes the time to review the condition of Kiwi's mouth with the owner.
He will point out areas that need work,
explain what he sees and feels and describe his plan for the session.
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On this day, Dr. Judd conducted a performance
dentistry exam that included some minor corrective work.
His goal was to remove sharp points (top, yellow arrows)
off the back molars, thus alleviating pressure on the lower jaw and cheeks, and making it
more comfortable for Kiwi to chew. Because Kiwi is on a routine dental care
plan, Dr. Judd can focus on a few key issues and conduct an expedient exam. |
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Dr.
Judd checks the incisor contact by gently
rubbing the teeth together to assess the "slide", and the surface angle, which
should follow the molar line.
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During the exam he will check his progress regularly using this method. |
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Repeated grinding and rubbing motions during chewing can cause
angle and surface irregularities that diminish the horse's
ability to chew and digest efficiently. Horses of all ages and
uses experience some normal wear and tear to their teeth.
Managing the process with routine dental exams can prevent
these normal changes from becoming problems that affect the
horse's health.
In
order to create the
correct relationship between the
molars and incisors, Dr. Judd must make slight
adjustments to the incisor line. Adjusting the angles will allow the horse to
chew in a more natural uninhibited circular motion.
This
process is critical and demands an experienced
hand. Dr. Judd is careful not to take off too much surface, as he does not want
to cause stress points or create spaces in which food can accumulate.
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One of the final steps in the exam is to check for
tartar. The dark brown coating seen on the teeth in this photo (right) is tartar
buildup. Dr. Judd removes the buildup in order to improve the general condition
of the mouth, reduce the chances of medical complications that might arise if
too much tartar travels through the bloodstream, and help the horse chew and
digest more efficiently. |
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Dr. Judd might need to make a few minor adjustments at the end of the exam.
It
is ideal to have an experienced assistant present during the exam, as it can be
physically challenging to keep the horse stable, handle all the equipment and
monitor the horse's condition while working on the teeth.
(Is
Vicki actually smiling under that mask?) |
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After
the exam, Dr. Judd instructs Sandi to keep watch on Kiwi for
about one week. After the dental exam, Kiwi needs time to
adjust to the changes in his mouth.
Depending on the extent of the work done, horses may need to learn new jaw
movements. Dr. Judd recommends that owners notice any changes in eating
habits or behavior during feeding time during the week following dental work.
While Dr. Judd
answers questions and discusses follow up care with the owner, his assistant
gets the fun job! Proper cleaning of
equipment and tools is a critical step in preventing the spread of illnesses and
diseases from one barn to the next. |
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Photographic examples of some common dental
conditions.
We will update
this section as we collect photos. |
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Normal Bite
Dr. Judd occasionally has time to
work on his own horses ... pictured here is Spot, the Judds' Paint/Arab cross.
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Overbite
Generally, this
condition causes minor irregularities in dental wear patterns, and if
diagnosed early, can be handled easily.
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Our thanks to our equine dental model, Kiwi and his owner, Sandi. He was very patient with us, and
quite a gentleman. Thank you for sharing him with us, Sandi! |
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EQUINE DENTISTRY
by Tom
Judd, D.V.M.
PDF Version
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Further down on this page:
Points, Hooks, Ramps,
Rims, Wave,
Overgrown Molars,
Bit Seat, Iincisor
maintenance, Canine
Reduction, Wolf Teeth,
Deciduous Teeth. |
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Each year in January
I attend the
International Association of Equine Dentistry (IAED) conference in Ocala,
FL. Many regard this as the
premier organization representing equine dental technicians and
veterinarians in equine dentistry. One
of IAED’s most exciting features is their certification program.
Currently two levels of certification are offered, basic and
advanced. The standard of
dental care of basic certification is head and shoulders above the level
of dentistry being offered by most equine practitioners and equine
dentists. One of my main interests is equine dentistry, and over the
past several years I have been striving to increase the level of quality
of the equine dentistry I practice. Joining
IAED and working up through the certification levels is another stepping
stone in my ongoing attempt to offer the best dentistry possible in the
area.
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(This motorized
caudal hook grinder allows Dr. Judd to focus his work on hard to reach
areas while protecting the surrounding teeth and soft tissue.) |
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Let’s
start by delineating some of the differences between “routine
floating” and performance dentistry.
“Points” are one of the first things that many owners notice
when a horse’s mouth starts to become out of balance.
Points are sharp edges of enamel that start to protrude on
the buccal (cheek side) of the upper premolars and molars and on the
lingual (tongue side) of the lower cheek teeth.
The premolars and molars are the large grinding teeth that are
situated behind the area taken up by the bit and extend backwards
approximately 8 inches. Floating teeth has basically meant the removal of these
points. Performance dentistry
addresses not only the removal of these points, but also takes into
account many other factors of equine dentition including removing hooks,
ramps and rims which are some of the abnormalities of molars that are
often left poorly addressed in a routine float.
Other aspects of performance dentistry include correcting waves and overgrown molars (high molars or steps), re-establishing
molar table angles, creating uniform bit seats, incisor maintenance,
reducing canines (not to be confused with wolf teeth) and removing wolf
teeth and deciduous teeth (caps). We
will go into each of these subjects in more detail next.
Hooks
are defined as being an overgrowth of tooth that is more tall than deep.
After point formation, hooks are probably the most commonly
discovered abnormality. They
usually form as sharp, fanglike projections on the upper first cheek teeth
and the lower last cheek teeth.
Ramps
are defined as an overgrowth of tooth longer in depth than in height, and
they are the next most commonly seen anomaly second to hooks.
They involve more tooth body, therefore, they are more difficult to
remove.
Rims
are formed on an individual tooth when the center of the occlusal
(grinding) surface becomes worn down compared to the outer edge of the
tooth.
Wave
formation involves an overgrowth of tooth in more than one consecutive
tooth. Since waves involve more than one tooth, they require a rather
large amount of tooth reduction and can be quite involved.
Viewed from the side a wave looks just like its namesake.
An elevation in the molar surface corresponds with an indentation
in the molar surface opposite it.
Overgrown
molars can be caused from the
lack of an opposing tooth or because of the super-eruption of the
offending tooth which causes excessive wear on the opposing molar. These
teeth can be handled by either cutting or grinding them back to normal
height.
Bit
seat creation involves placing
shallow angles into the very front edge of the upper and lower first cheek
teeth. Creating a bit seat in
the leading edge of the first cheek teeth gives the soft tissues of the
mouth (tongue, inside edge of the corners of the lips and cheeks) a
comfortable place to rest while a bit is in use.
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(Various burrs used for
performance dentistry.)
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Incisor
maintenance refers to making sure the length of the incisors
(front, grass shearing teeth) is in correct proportion to the length of
the molars. If the incisors
are too long they keep the molars out of contact with each other during a
chewing cycle. If the molars
are too long in relation to the incisors, the incisors won’t come
together completely. We can
judge molar and incisor proportion by observing the effect of lateral
movement of the jaw. Keeping
the incisor length proportionate to the molar length and adjusting the
molar table angle to 10 to 15 degrees allows the horse to achieve maximum
efficiency of feed breakup and, therefore, utilization.
We look for stems no
longer than 3/8 of an inch in the manure to assess grinding efficiency.
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Canine
reduction involves
shortening and blunting the canine teeth when they are present.
Many authorities in the profession of equine dentistry now
recommend this procedure since it serves a number of purposes.
Canine reduction contributes to making the horse more comfortable
with a bit in its mouth, reduces the occurrence of
abrasion on the
horse’s tongue, reduces likelihood of injury to the hands of anyone
examining or working in the horse’s mouth, and can slow or prevent
tartar formation in this common area for tartar buildup.
Wolf
teeth are small permanent teeth
that erupt usually within the first year or two of the horse’s life.
The crown (the part of the tooth visible above the gum) usually
averages about the size of a pencil eraser.
When present, this tooth sits just in front of the first upper
cheek teeth and has a high probability of causing bitting problems.
With proper levels of sedation and analgesia (pain relief) they can
usually be removed quite easily.
Deciduous
teeth are baby teeth that erupt
and exist in the young horse’s mouth from birth through 4 1/2 years old.
They exist for the incisors and for the first three upper and lower
cheek teeth (pre-molars). Deciduous teeth are often called “caps” and, like a
loosening baby tooth in humans, can be quite uncomfortable for several
weeks prior to falling out. When
loosening caps are discovered during a dental exam they should be removed
at that time.
The
above discussion demonstrates the complexity of equine dentistry when it is approached with the goal of
balancing the equine mouth.
~ Tom Judd, D.V.M
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