Abstract
The procedure involved in the three dimensional classification (description) of diagnosis is outlined with regard to the asymmetry in the maxillo-facial deformities, citing examples of typical cases. The relationship of the ideal facial medial sagittal plane and occlusal plane is expressed as the basic planes of the three dimensional description.
Maxillo-facial symmetry (A0) or asymmetry (A1, A2) are estimated by mirror images of right and left sides of the face at the facial median line.
The diagnosis and/or the symptom of the genesis of the deformity was additionally described in [] at the end of this description formula.
The thus-obtained description formula for maxillo-facial asymmetry according to this procedure is:
A(UML) W(UML)CXOY [disease]
It seems that this three-dimensional description gives the standard of diagnosis in any institutions and has a utility value not only in the diagnosis but also in the planning of treatment and the evaluation of after-operation for the morphological classification of the maxillofacial deformities.
