Only "architectural", "Orthognathic", "Topographic", "dental", "cutaneous profile", "soft tissues velophyngo-lingual", "Cranio-mandibular" (and cranio-facial) analyses can meet the needs of clinicians, this is what many researchers and clinicians have understood, who have been working hard to develop these methods since the beginning of orthodontic cephalometry. The personal research of Professor Jean Delaire, concerning the development of a new cephalometric analysis began as soon as he entered professional life (1953). They have successively covered: - anatomy and physiology of cranio-facial skeleton development in normal and pathological subjects, particularly in dento-facial dysmorphosis and numerous malformative syndromes. - the critical study of all cephalometric analyses proposed since 1931 (first article of h.broadbent) with systematic research of their "common data" (constants): angular values, parallelisms, alignments, proportions of their lines and reference segments. - the work of other authors working in the same direction (development of an analysis not based on statistical averages). - Professor Delaire himself, in 1971, developed a cephalometric analysis to highlight and study specifically the development of the various facial territories. This assimilation to a (suspended) construction whose characteristics depend on: - its building site (the anterior base of the skull), - the orientation and length of its vertical "pillars", - the orientation and dimensions of its maxillary and mandibular constituents, - the orientation and arrangement of the alveolar-dental elements. The interest of assimilating the face to a "construction" and the possibility (thanks to this analysis) of systematically studying all its "architectural factors" makes it possible to understand: a) the individuality of each side according to the hereditary and functional anatomical peculiarities of each; b) the deforming effects of oro-facial dysfunction (and provide for those of orthodontic or surgical treatments). c) The consideration of the whole skeleton of the cephalic end and referred to standards of alignments and harmoniously balanced proportions" therefore of the cranial "box" (vault + base) and the upper cervical spine. d) References to universal standards, "specific" laws specific to living matter (to living beings) that facilitate the understanding of the architectural development of the cephalic skeleton
This orthodontics and cephalometry software, allows the treatment of a multitude of analysis selectable simultaneously or independently in simple display or in comparison, and it gives a quick result of various analyses including the aid to the total prosthesis, the "architectural" analyses, "Orthognathic", "Cranio-mandibular", based on the teleradios of the patient. Simple and ergonomic, this software has high-performance functional aspects in constant evolution. The cranio-facial "architectural" analysis developed is a "partially orthogonal" network, some horizontal and vertical lines having been replaced by oblique lines, delimiting better the "growth units" and the "mechanics" of the cranio-facial skeleton. This development was preceded by anatomical and physiological studies which successively focused on the normal and pathological developments of the skull vault, its base, the orbits, the zygomatic arcades, the maxillary, its sinuses, the palatal vault, the premaxillary, the mandible, the TMJ, as well as the interactions that may exist between the state of these anatomical elements and the cervical spine.