Extractions
are by far the most common oral surgery performed in animals.
However, to a veterinary dentist, extraction is often viewed
as a defeat. Most teeth are salvageable, but sometimes
the degree of disease, health status of the patient, inability
of the owner to perform homecare and financial constraints
make extraction the best option. Indications include: advanced periodontal
disease, fractured teeth, supranummary
(extra) or crowded teeth, Feline
oral resorbtive lesions, inflammatory disease, and orthodontic
disease that is causing oral trauma.
For
fractured teeth we would generally prefer to perform a
root canal procedure and save the tooth. This is especially
true of the canines, upper fourth premolars, and lower
first molars. These teeth are very important to the patient,
and the large size of the roots makes extraction very difficult
if the tooth is periodontally healthy. For early oral resorbtive
lesions restoration can be an option, but these lesions
are progressive. Bases on the severity of the disease,
periodontal disease can be treated with surgery, however
the owner must be willing to perform home care if this
avenue is to be explored.
The
first step we perform is to take a dental radiograph of
the tooth to ensure that there is no root pathology or
aberrant anatomy that would effect the extraction. Extractions
are performed by using a dental elevator to fatigue the
periodontal ligament enough so that the tooth can be removed
easily with extraction forceps. For teeth with more than
one root, the tooth is sectioned into single root segments
and each root removed as a single root entity. The veterinarian
may or may not suture closed the extraction site depending
on the size of the hole. Dissolvable suture is typically
used so the patient does not need to be sedated for suture
removal. I generally recheck my extraction sites two weeks
post operatively to ensure that the site is healing well.
Canines
that are broken but are periodontally healthy are a very
different matter. The roots on these teeth are very large.
The root is approximately twice the length of the crown
(the area you can see) and larger in diameter. This makes
standard extractions very difficult, however not impossible.
Generally, I will perform a surgical extraction to save
time, effort, and animal discomfort. This procedure entails
creating a flap in the gingival tissue on the outside of
the tooth to expose the underlying bone. Using a high-speed
dental bur, the bone on the outside of the tooth root is
removed. Then, the tooth is luxated out of the socket.
Finally, the harvested flap of gum tissue is sutured over
the extraction site to cover the defect.