Copy 1, Volume 1

The study of medicine. Improved from the author's manuscripts, and by reference to the latest advances in physiology, pathology, and practice / [John Mason Good].

  • John Mason Good
Date:
1834
Catalogue details

Licence: Public Domain Mark

Credit: The study of medicine. Improved from the author's manuscripts, and by reference to the latest advances in physiology, pathology, and practice / [John Mason Good]. Source: Wellcome Collection.

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    Gen, I. Spec. LV. O. De- formis. Second set wider than the first. Gen. I. Srec. V a O. Eden- tula Pecu- liaris. From con- stitutional defect. The second set of teeth is also wider than the first ; and hence, with the exception of the bicuspidati, which from this very circum- stance rise under the shedding molares, every single tooth in its ascent must be opposed to more than a single tooth above it; whence another source of difficulty, and often of irregularity. In con- sequence of all which, it, is rather to be wondered at, that we do not meet with more frequent instances of deranged or misshapen teeth than actually occur to us. And nothing can be clearer, than the necessity of a close and skilful watch over them during the shedding season, so as to remove any of the first set when they form an undue degree of resistance to the permanent, and have a. tendency to throw them out of their proper line; and any of the second set that may exceed their proper number, and, by their surplus, crowd and misplace the rest. SPECIES V. : ODONTIA EDENTULA. TOOTHLESSNESS. LOSS OR WANT OF TEETH. Tuis is also a very common affection, and offers the following varieties :— a Peculiaris. From constitutional defect. 8 A vi extrinseca. - From external violence. y A carie. From decay. S Senilium. From old age. As the teeth are often produced supernumerously, so are they often naturally deficient in number. [Sometimes the germs of the permanent teeth are either wanting, or are not developed, and then ~ the milk-teeth are in certain instances not shed during life, but merely diminish in size from the effect of a larger attrition than what they were designed to bear. In other cases, the milk- teeth are shed as usual, but not replaced. Lastly, examples occur, in which no teeth whatever are produced, and individuals have been known toreach a very advanced age, without ever having had a tooth in their mouths. If the edge of the jaws of persons thus circumstanced be examined, it will be found to be of a fibro-cartilaginous consistence, like the hard substance noticed in infants which have not yet cut their teeth; or like what is repro- animals in the places where their jaws are naturally destitute of teeth.* But, the absence of teeth in man may be only partial ;” and, in this case, there is a difference in the frequency of the defect in relation to the kinds of teeth.] The dentes sapientiz,
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