The etiology of osseous deformities of the head, face, jaws and teeth.

  • Talbot, Eugene S. (Eugene Solomon), 1847-1924.
Date:
1894
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Licence: Public Domain Mark

Credit: The etiology of osseous deformities of the head, face, jaws and teeth. 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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    committed of suffering them to remain even after the per- manent have partly appeared. There results from this an error of relation between the development of the palatine arch and the superior alveolar border, or of the two arches at once, relatively to the size of the teeth. Another cause is the bad habit of permitting children to suck their thumbs and continually to be putting their hands into their mouths. Another cause is the frequently repeated action of the tongue in the pronunciation of certain syllables called lingual, in which that organ, striking against the anterior superior teeth, gives rise to anterior obliquity of the superior arch. We may remark that this deformity is very frequent with the English, resulting from the pronunciation of lingual sylla- bles. About the same year Dr. Thos. Ballard claimed certain peculiarities, such as serrated teeth and projecting jaws, to be the result of fruitless sucking. Stockton's Dental Intelligencer^ 1845, from the '' Forceps: |^/^ The comparative ease by which, with pressure, the incisors or bicuspids may be made to alter their position, would naturally suggest the idea that the tongue, lips or cheek might, in some measure, influence their original direction; but as these are pressed by every one, while certain individ- uals only have their teeth unevenly arranged, we may look for some other accessory; and this may be found in the form of the palate, certain peculiarities of which are found in con- nection with similar forms of the dental arch. Irregularity of position is almost exclusively confined to anterior five teeth on each side of the medial line, brought about by pres- sure of tongue upon hard palate in sucking or mastication. Nasmyth's '' Researches on Development, Structure and Diseases of the Teeth, 1845: Projecting upper jaw is >^ often the result of a habit of sucking the tongue or finger in infancy. But both projecting upper and projecting lower jaw arise from an arrest of development in the jaw when expansion of the arch is deficient. He also states that we find the prominent mouth in uncivilized races. The theory that irregularity may be due to thumb-suck-