When the skull is misaligned, the upper and lower jaws rotate clockwise. In this state, it is necessary to move the lower jaw forward so that the posterior movement of the misaligned temporal bone is moved forward. This patient must have much weaker muscle strength in the whole body when the teeth are in contact than when the teeth are not in contact. I also completed Functional Occlusion from Roth/Willams in 1997. At that time, Dr. Roth only considered the relationship between the temporal bone and the mandibular condyle. However, everyone's skull is twisted, and the temporal bone is twisted in the wrong direction on both sides. Dr. Roth's method of positioning the lower jaw only considers the temporal bone and the mandibular condyle. Since the temporal bone is the most moving bone among the skull bones and only moves in the wrong direction, even if the treatment is completed at the position of the lower jaw in this way, the upper and lower jaws will be distorted little by little at the same time. That is why the nasolabial folds around the mouth get deeper as time goes by.

If the dentist does orthodontic treatment without considering the cranial distortion, the cranial discrepancy will increase more and more, and the body will be out of balance.