. The Dental cosmos. Crye breathing. The fact is, however, thatmany of these have never had nasal ob-struction, although from their appear-ance it would he the natural patients are very prone to nasalstoppage by inflammation, and the small-esl portion of the normal pharyngealtonsil may produce complete collusion. BENEFICIAL RESULTS OF EXPANSION OFTHE DENTAL ARCHES UPON DEVELOP-MENT OF THE INTERNAL FACE. In the various skull sections shown,attention has been particularly called tocertain deviations from the typical anat-omy of the internal face which wouldindicate concomitant def
. The Dental cosmos. Crye breathing. The fact is, however, thatmany of these have never had nasal ob-struction, although from their appear-ance it would he the natural patients are very prone to nasalstoppage by inflammation, and the small-esl portion of the normal pharyngealtonsil may produce complete collusion. BENEFICIAL RESULTS OF EXPANSION OFTHE DENTAL ARCHES UPON DEVELOP-MENT OF THE INTERNAL FACE. In the various skull sections shown,attention has been particularly called tocertain deviations from the typical anat-omy of the internal face which wouldindicate concomitant deficiency of devel-opment and function of the nasal struc-tures and maxillary arches from whichthe following conclusions could be drawn : Fig. Skull at birth, showing relative proportionsof cranium and face. On account of this interdependence offunction and structure between the max-illary arches and superimposed nasalstructures, we may infer that whateverinterferes with development in one ofthese regions will interfere with develop-ment in the other, and, conversely, what-ever assists in the development of one ofthese regions will assist in the develop-ment of the other. It is a matter of everyday practice inorthodontia to expand the dental arches,and by so doing to increase the develop-ment of the maxillary arches, hence, evenwithout further argument, it can be as- PULLEN.—EXPANSION OF THE DENTAL ARCH. 5 1 5 sumed that the nasal structures and si-nuses directly above the maxillary regionreceive at the same time an impetus tofurther development. Again, when the early age at whichorthodontic treatment should be begun is and the face increases in proportion tothe size of the cranium more rapidlyduring childhood, so that the
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectdentist, bookyear1912
