A system of dental surgery / by Sir John Tomes.

  • John Tomes
Date:
1887
Catalogue details

Licence: Public Domain Mark

Credit: A system of dental surgery / by Sir John Tomes. Source: Wellcome Collection.

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    overgrown people a coar«e lUiimul aspect ; the orbits also arc pretty constant, and the adjnstnient of the varying sized face to tlie inivarying orbits and craninm is largely effected by tlic size of the frontal and maxillary sinnscs. (Med. Chirnrg. Transac. vol. xxvi., 1848.) Irregulariiiex of th.e Tectli.—The nnniljci', form, period of eruption and arrangement of the teeth may, any or all of them, be abnormal ; and these abnormalities again may be accidental in tlie individual or they may be inherited. Thus tlie late Dr. Mc(i)uillen (') gave some striking ex- amples of the transmission of characters apparently trifling from parents to children. In one family the upper lateral incisors bit inside their corresponding lower teeth in the father, and in three out of four of liis children ; the fourth child had not cut these teeth at the date of the observation. In another family the father, son, and grandson alike never liad any lateral incisors in the upper jaw ; a second son had them exceedingly dwarfed, and some of tlie latter's children had them so stunted as to make them inisiglitly, so that they were extracted for tlie ])ur])ose of inserting artificial substitutes. In a later number of tlie same journal a family in whom no })ermaueut teeth at all are found, is mentioned as l)eing well known to many American dentists. AYithin tlie author's own experience no less tlian three families have been met with in wliicli the same teetli are generall}' al)sent, or, if ])rescnt, are stunted in greater or less degree. Mr. Weiss has recorded the transmission of the peculiarity of well defined additional lingual cusps in the upper molar from a fatlicr to six of liis cliildren. An instance of tlie congenital absence of bicus])id teetli is given by Mr. Keath (-'), and in my own ]iractice I have lately met with an example i>f the absence of tlie left ui)])er lateral incisor in three sistt'rs ; on the right side these teetli are present. (') D«nt»il Cosmo.si, vol. xii., ]i. 7.>. (-) Injiu-ius luul DisciLses of the Jaws, ji. 18.').
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