Malocclusions are variations of the bite from the above described normal
scissors bite. Malocclusions are classified based on the dental
relationships.
They are numbered one through three with a fourth group that do not fit the first three. They are designated "Mal 1", "Mal 2" and "Mal 3".
Mal 1; note the upper first left and right incisors rest behind the lower
first and second incisor teeth. This is called "anterior crossbite".
Class 1 (Mal 1) Notice the upper fourth premolar tooth is positioned
in an abnormal position inside the lower first molar tooth. This
condition is referred to as "posterior crossbite". This condition did
not require treatment as the pet had a comfortable and functional
occlusion (bite).Class 1 (Mal 1) malocclusions are occlusions where one or more teeth are not in the normal scissors alignment. The above two photos are examples of Class 1 malocclusion (anterior and posterior crossbite).
Class 2 Malocclusion (Mal2). Note the upper jaw
is substantially longer than the lower jaw and deep
palatal defects have developed due to trauma.
This condition is sometimes called an "overbite".
The mandibles are short relative to the maxillas or
the maxillas are long relative to the mandibles. This
also has been called mandibular brachygnathism.
Mal 2: This dog's lower jaw was more
than 1 inch shorter than the upper jaws.
The lower canines caused deep puncture
holes behind the upper canine teeth.
Dental radiographs provide important Post surgical radiograph demonstrates
information to help avoid problems. the fragile jaw structure and confirms
complete extraction of the lower canines
and incisor teeth.
Class 3 Malocclusion (Mal 3). Notice the lower jaw is relatively longer than
the upper jaw (viewd from under the jaw). Malocclusions that involve jaw length discrepancy are generally believed to be inherited conditions however this author is not aware of research or documentation to prove this belief.
This malocclusion is sometimes referred to as an "underbite". The mandibles may be too long or the maxillas are too short relative to the mandibles. It is also called maxillary brachygnathism.
Mal 3; Pre-operation dental radiograph. Dental radiograph after surgery confirms
no tooth roots or fractured bone remains
within the alveoli (tooth sockets).
Harry Potter "wry bite or class 4 malocclusion.
We routinely see patients with class two and three malocclusions that have painful bites. We refer to this as "traumatic occlusion". Our treatment goal is to provide a comfortable bite for these patients. Treatment options are discussed in detail to allow for informed decision making during the initial consultation.
Malocclusions may be treated with orthodontic appliances or by oral surgery.
Eli had an uncomfortable malocclusion.
View the following series of photos.
Eli's normal comfortable right side.
Eli's left side is not comfortable.
Traumatic occlusion.
Eli has teeth striking teeth.
Eli's malocclusion close up view.
This malocclusion could be treated
with orthodontic appliances but due
to the travel distance to our office
the owner choose to treat by oral surgery.
Surgical view; flap and alveoplasty
exposed the canine and third upper
incisor for careful removal.
Surgical flap was closed.
This is another Sheltie with a similar malocclusion treated a little differently.
Zorro had the lower left canine tooth This side view demonstrates severe tipping.
tipped out toward the lip. The
malocclusion was caused by a retained
primary (baby) left upper canine. The
secondary canine positioned too far
forward. This resulted in the tipping of
this canine tooth.
Extraction of the canine was elected! This is the post operative X-ray.
This is the pre-operative X-ray. Orthodontic treatment was also possible!
They are numbered one through three with a fourth group that do not fit the first three. They are designated "Mal 1", "Mal 2" and "Mal 3".
Mal 1; note the upper first left and right incisors rest behind the lower
first and second incisor teeth. This is called "anterior crossbite".
Class 1 (Mal 1) Notice the upper fourth premolar tooth is positioned
in an abnormal position inside the lower first molar tooth. This
condition is referred to as "posterior crossbite". This condition did
not require treatment as the pet had a comfortable and functional
occlusion (bite).Class 1 (Mal 1) malocclusions are occlusions where one or more teeth are not in the normal scissors alignment. The above two photos are examples of Class 1 malocclusion (anterior and posterior crossbite).
Class 2 Malocclusion (Mal2). Note the upper jaw
is substantially longer than the lower jaw and deep
palatal defects have developed due to trauma.
This condition is sometimes called an "overbite".
The mandibles are short relative to the maxillas or
the maxillas are long relative to the mandibles. This
also has been called mandibular brachygnathism.
Mal 2: This dog's lower jaw was more
than 1 inch shorter than the upper jaws.
The lower canines caused deep puncture
holes behind the upper canine teeth.
Dental radiographs provide important Post surgical radiograph demonstrates
information to help avoid problems. the fragile jaw structure and confirms
complete extraction of the lower canines
and incisor teeth.
Class 3 Malocclusion (Mal 3). Notice the lower jaw is relatively longer than
the upper jaw (viewd from under the jaw). Malocclusions that involve jaw length discrepancy are generally believed to be inherited conditions however this author is not aware of research or documentation to prove this belief.
This malocclusion is sometimes referred to as an "underbite". The mandibles may be too long or the maxillas are too short relative to the mandibles. It is also called maxillary brachygnathism.
Mal 3; Pre-operation dental radiograph. Dental radiograph after surgery confirms
no tooth roots or fractured bone remains
within the alveoli (tooth sockets).
Harry Potter "wry bite or class 4 malocclusion.
We routinely see patients with class two and three malocclusions that have painful bites. We refer to this as "traumatic occlusion". Our treatment goal is to provide a comfortable bite for these patients. Treatment options are discussed in detail to allow for informed decision making during the initial consultation.
Malocclusions may be treated with orthodontic appliances or by oral surgery.
Eli had an uncomfortable malocclusion.
View the following series of photos.
Eli's normal comfortable right side.
Eli's left side is not comfortable.
Traumatic occlusion.
Eli has teeth striking teeth.
Eli's malocclusion close up view.
This malocclusion could be treated
with orthodontic appliances but due
to the travel distance to our office
the owner choose to treat by oral surgery.
Surgical view; flap and alveoplasty
exposed the canine and third upper
incisor for careful removal.
Surgical flap was closed.
This is another Sheltie with a similar malocclusion treated a little differently.
Zorro had the lower left canine tooth This side view demonstrates severe tipping.
tipped out toward the lip. The
malocclusion was caused by a retained
primary (baby) left upper canine. The
secondary canine positioned too far
forward. This resulted in the tipping of
this canine tooth.
Extraction of the canine was elected! This is the post operative X-ray.
This is the pre-operative X-ray. Orthodontic treatment was also possible!
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