(1)almost there is asymmetry of the maxillary arch prior to treatment.
One maxillary quadrant is closer to the palatal mid-line, i.e. more internally rotated, in osteopathic terms. The other quadrant, which is further from the mid-line, is then said to be more externally rotated. This asymmetry is of major importance in treating palatal expansion. When a symmetrical force is applied, the more internally rotated quadrant is much more resistant to pressure than the more externally rotated quadrant.
It follows that the result will not be a symmetrical reaction. The more externally rotated side will move more readily than the more internally rotated side. The
arch is indeed expanded but the asymmetry may actually increase.
(2)Almost there is asymmetry of maxilla and mandibular position.
(3)Almost there is asymmetry of cranial bone.
(a-p axis/transverse axis/vertical axis/SBS)
(4) How we do evaluate, monitor and adjust the maxilla and mandibular position to the skull.
The key is the mandibular position.
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