A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . ally it is progressivelythickened from the neck to the apex. Theroots of the cuspids are prominent towardsthe lip, and, for most of their length, haveonly a thin bony covering, and this forms aridge along the line of the root, which mayeasily be traced with the finger through thesoft tissues of both the gum and lip. Inmany instances the bony covering is entirelywanting for a little space near the middleof the length of the root of the cuspid, the buccal root of the first bicuspi
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . ally it is progressivelythickened from the neck to the apex. Theroots of the cuspids are prominent towardsthe lip, and, for most of their length, haveonly a thin bony covering, and this forms aridge along the line of the root, which mayeasily be traced with the finger through thesoft tissues of both the gum and lip. Inmany instances the bony covering is entirelywanting for a little space near the middleof the length of the root of the cuspid, the buccal root of the first bicuspid, themesial root of the first molar, and, occasionally, of other teeth. On the lingual side of the upper teeth (Fig. 13), the progressive thickening ofthe alveolar process, from the border towards the apex of the root, is much greater;so that the roots of the teeth seem to lie towards the labial and buccal side of thealveolar process (Fig. 11). Even the large lingual root of the upper first molar,diverging strongly to the lingual, seldom forms a ridge or prominence of the proc-ess covering its lingual CHAPTER X TYPICAL AND ATYPICAL OCCLUSION OF THE TEETH IN RELATION TOTHE CORRECTION OF IRREGULARITIES The following chapter is an extract from a paper entitled as above, by H. Cryer, Professor of Oral Surgery in the University of Pennsylvania,read before the New York State Dental Society, May, 1904, and published in theDental Cosmos, September, 1904. It should be carefully studied in its general and scientific teaching of theanatomical, physiological, and surgical aspects of the teeth in relation to Ortho-dontia. The teachings of men of Dr. Cryers long experience and eminence inthe dental profession, relative to the principles of tooth movement and regula-tion, should receive the profoundest consideration. Attention is particularlycalled to his opinions in regard to some phases of the much exploited theoryof regulating all cases without extraction, upon the ba
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