A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . herefore, in a case which presents for treatment, if it seems to be mainly charac-terized by some special form of irregularity, it is important to first determine theClass to which the case belongs, by a careful examination of the buccal occlusion,particularly the first molars, and then by a comparison of the different zones ofthe dento-facial area with the unchangeable and main portions of the face. TheDivision of the Class to which the case belongs will at once be apparent. Th
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . herefore, in a case which presents for treatment, if it seems to be mainly charac-terized by some special form of irregularity, it is important to first determine theClass to which the case belongs, by a careful examination of the buccal occlusion,particularly the first molars, and then by a comparison of the different zones ofthe dento-facial area with the unchangeable and main portions of the face. TheDivision of the Class to which the case belongs will at once be apparent. This isreally necessary as a first guide to correct treatment. 192 PART VI. DENTO-FACIAL MALOCCLUSIONS While there are doubtless many who will arrive at correct conclusions in diag-nosis through natural artistic discernment (See Art, Chapter I), their channelsof subconscious thought, if intelligently interpreted, would amount to aboutthe same thing. Nor does it relieve us of the fact that the great majority of stu-dents require well defined rules in a proceeding of whi^h they have little or noknowledge. Fig. Observation Training.—In training the mind to a fuller appreciation of theneeds of this department, one cannot do better than to study, unobtrusively, thefaces one meets in suburban cars and local transits of a large city. In a face underobservation, note the general character and relations of the various parts of theprincipal features, or unchangeable area, shutting out for the time the dento-facialarea. Note the relative position and pose of the chin, with the malar prominences,forehead, bridge of the nose, etc. Then turn to the dento-facial area, or thatportion of the physiognomy that it is possible to change in dental orthopedia—its general and localized relations from an esthetic standpoint. Compare theoutlines of the dento-facial zones with each other, and with the adjoining areasof the physiognomy outside of this sphere of possible influence. Note first: thec
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