A trial study of the new classification (three dimensional diagnostic description) in the maxillo-facial deformity

Part I: soft tissue (appearance of the face)

Abstract

The outline of the new three dimensional description for the appearance of the face in the maxillo-facial deformity is presented in this paper.
First the full face is divided into three parts (“U”: upper part of the face, “M”: middle part of the face, “L”: lower part of the face) vertically and five parts (I-V from the right of the face) horizontally to express the abnormal region. The profile is devided into three parts (“U”, “M”, “L”).
Then the regional relation of the each section is expressed using three numerals (“0”, “1”, “2”).
“0”: normal condition (symmetry or balanced)
“1”: left eccentric or increased condition
“2”: right eccentric or decreased condition,
And then “A” (Asymmetry of the face), “H” (Height of the face), “W” (Width of the face) and “P” (Profile of the face) are inspected and given a corresponding description for each of them using the regional expression and the numerals in the following formula.
A_(UML) H_(UML)W_(UML)P _(UML)
It seems that this three dimensional description can describe any appearance of the face and gives the standard of diagnosis among various institutions in the case of the maxillo-facial deformity.