A manual of dental economy, or practical instruction on the physiology and treatment of teeth, in order to check their diseases, repair their injuries, and insure their preservation / by Charles S. Rowell.

  • Rowell, Charles S.
Date:
1855
Catalogue details

Licence: Public Domain Mark

Credit: A manual of dental economy, or practical instruction on the physiology and treatment of teeth, in order to check their diseases, repair their injuries, and insure their preservation / by Charles S. Rowell. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    of the lateral incisors of the lower ; and the lateral incisors of the lower jaw, cover half of the opposite incisors, and more than half of the opposite cuspids of the lower. The cuspids of the upper also fall between and project a little over the cuspids and the first bicuspids of the lower ; and so, of course, the first bicuspids of the upper fall partly over and beyond those of the lower, so as to rest partly upon the first molars. So also the first upper molars cover two-thirds of the first, and part of the second, under molars ; the second upper molars shut down upon the remainder of the second and part of the third ; but the third molars, or ivisdom-teeth, of the upper jaw, being smaller than those of the lower, shut down upon them evenly, and thus compensate the previous appa- rent disparity of position. But it is supposed that this irregularity of opposition, actually adds to the mechanical power, or at least resources, of mastication ; for if a tooth be lost, in either maxillary, the opposite tooth does not become entirely useless, as it otherwise would, since it can still partly act upon'another. The above classification and nomenclature of the human teeth, may be better understood and remembered from the following tabular form :