BTS TMJOINT, Руководство пользователя

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BTS Biomedical
BTS TMJOINT
guide to the report data reading
range.
So it is easy to observe the predominance of the right or left temporal in
the anterior quadrants, and the masseter, left or right, in the posterior
quadrants.
The value of the POC SCM does not affect the targets position, but only
the percentage of co-contraction of neck muscles during MVC.
• BAR: Barycenter
It provides an estimate of the occlusal barycenter position. It is obtained
by calculating the percentage overlapping coefficient between the
activities of the couple of temporal and the activities of the couple of
masseter (while the POC index compares single homologous muscle).
When the contact points tend to focus on the molars, the masseters
record a major contraction respect to the correspondent temporalis
(Posterior barycenter).
Instead, in the occlusal condition in which the barycenter moves in the
anterior-lateral areas, that means until the first-second premolar, the
temporalis express major contraction forces (Anterior barycenter). In
this case there is a bilateral overload of the joints that, with the passing of
time, can lead to pathological conditions.
For the BAR index if the position of the barycenter is mainly anterior,
there will be the letter “A”, will also be indicated in what percentage the
anterior temporal muscles contribute to move the barycenter upwards.
Vice versa there will be the letter “P” and will also be indicated in what
percentage the masseter muscles contribute to move backwards the
barycenter.
• BAR: graphical representation
The normal value of the BAR index is > 90%.