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TMJ Function
Normal TMJ Function
When the mouth opens, two distinct motions occur in the joint.
The first motion is ROTATION around a horizontal axis through the
condylar heads. The second motion is TRANSLATION. The condyle and
meniscus move together anteriorly beneath the articular eminence.
In the closed mouth position, the thick posterior band of the
meniscus lies immediately above the condyle. As the condyle
translates forward, the thinner intermediate zone of the meniscus
becomes the articulating surface between the condyle and the
articular eminence. When the mouth is fully open, the condyle may
lie beneath the anterior band of the meniscus.
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Dear Farid,
TMJ (JAW JOINT) DISORDERS It has been estimated that more than 50
million people in Canada and the U.S. suffer from severe
headaches. These headaches can be so debilitating that they can
adversely affect their ability to work and their relationships
with family and friends. Although there can be many reasons for
headaches, many headache patients suffer from temporomandibular
joint disorders (TMJ disorders). The most common symptoms include:
Headaches, Dizziness, Stiffness in jaw joint, Ear aches, Ringing
in the ears, Teeth do not touch when biting, Neck pain, Pain
behind the eyes, Problem swallowing, Fainting, Shoulder or back
pain, Tingling or numbness of fingers, Clicking jaw, Inability to
open mouth wide, Clenching/grinding teeth, Worn teeth
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Abnormal TMJ
Function
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Anterior Displacement With Reduction INTERNAL
DERANGEMENT of the TMJ is present when the posterior band of the
meniscus is anteriorly displaced in front of the condyle. As the
meniscus translates anteriorly, the posterior band remains in
front of the condyle and the bilaminar zone becomes abnormally
stretched and attenuated. Often the displaced posterior band will
return to its normal position when the condyle reaches a certain
point. This derangement causes you to hear a "popping" or
"clicking" sound in your ear. |
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Read on... |
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Anterior
Displacement Without Reduction
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In some patients the meniscus remains anteriorly displaced at full
opening. Patients with anterior displacement without reduction
often cannot fully open their mouths. Sometimes there is a tear or
perforation of the meniscus. Grinding noises in the joint are
often present. This is a much more severe condition than the
"Popping" TMJ. It leads to osteoarthritis of the jaw joint. The
joint breaks down and results in a receding chin and protruding
teeth as time goes by. If the displaced disc is pressing against
the inner ear, you will probably get subjective hearing loss and
other ear symptoms. |
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Read on... |
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Treatment of TMJ
Disorder
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For most patients the TMJ disorder treatment is devided into
two phases, 1. Diagnostic Phase 2. Jaw stabilization phase. Often
patient needs some Cranial Osteopathy treatment as well to address
the balance of the cranium, spine and pelvis with dentition.
Please follow the link to do a self-diagnosis for TMJ disorder.
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Read on... |
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