The basis for the diagnosis of the structural component of temporomandibular joint dysfunction (TMD) and for cranial-mandibular-cervical (CMC) orthodontics comes from a massive anthropological study of what was termed "non-orthodontic norm" skulls. In other words, the researchers were looking for skulls, which they knew had no orthodontic treatment and which met all the criteria, which were used to define "health" of the gnathologic system. Afterwards, all the skulls which met the selection criteria for health were studied to determine if there were any "common threads" or qualities which could be attributed to any and all of the skulls. The findings were quite remarkable.
In order to qualify for the study, the skull had to present:
It was felt that if a skull presented all these qualities, then it should represent a healthy gnathological system.
Surprisingly enough, when the selected skulls were studied, numerous "common threads" were found both orthopedically and orthodontically.
The orthopedic common threads discovered were that:
A line drawn to connect the centerpoint of the axis of rotation of the heads of the mandibular condyles and the centerpoint between the tips of the mesio-incisal line angles of the maxillary central incisor teeth always formed an equilateral triangle. (Amazing!!!) In essence, this determines the correct antero-postero position of the maxilla, and together with the other findings, allows us to get a correct three-dimensional fix on the position of the maxilla in the skull.
The orthodontic common threads included:
Over 15 years ago, I began using incorporating the selection criteria for the above-mentioned study into our diagnostic protocol. I also began using the orthopedic and orthodontic "common threads" findings as the basis for our treatment objectives. Ways have been developed to allow us to accomplish those results non-surgically and with only minimal discomfort and/or inconvenience. The results have been quite marvelous and they absolutely speak for themselves.