Orthodontia, or malposition of the human teeth : its prevention and remedy.

  • Guilford, Simeon Hayden, 1841-1919.
Date:
[1898]
Catalogue details

Licence: Public Domain Mark

Credit: Orthodontia, or malposition of the human teeth : its prevention and remedy. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    fortune can hardly fail to cause an injury to the partially' formed permanent tooth lying beneath it. Should no more serious result follow, it will probably at least divert the new tooth from its course and be productive of irregularity. The author had one such case in his practice with an irregularly placed permanent tooth as the result. Adenoid Vegetations.—Within the past ten years the atten- tion of oral and aural surgeons has been especially directed to the ill-effects resulting from the presence of adenoid vege- tations in the naso-pharynx. These grow^ths are often found in children as early as the second year of life, and by partially or wholly closing the posterior nares, interfere greatly with natural breathing through the nose. They also frequently cause marked im- pairment of hearing by impinging upon or closing the mouth of the Eustachian tube. It has been noticed that their presence is nearly always associated with, and by inference productive of, a pinched apjoearance in the superior maxillary and nasal regions of the face. This condition is believed to be attributable to lack of development of the frontal, sphenoidal and eth- moidal sinuses and the antrum of Highmore, which being normally in contact with the air, cease to develop when the circulation of the air through the nose is interfered with, resulting in altered dimensions of the face. This lack of development in the osseous structures con- tiguous to the oral cavity is very likely to produce a high and contracted vault associated with a lancet-arch, and such condition of the vault and arch has usually been found in cases where adenoid growths, through lack of discovery, have been allowed to remain through a number of years. That these growths are directly or indirectly responsible for the malposition of teeth (as has been stated by some medical writers) other than the angular position of the superior central incisors as found in the lancet-arch, we have no reason to believe; but inasmuch as any alteration