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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    Scame socket. Although in this case the hiird pahite is thickened in a peculiar manner, ami terminates in four processes, yet the jaw is well formed as respects the dental arch, and the teeth are both well developed and well ar- ranged. In this instance, the form of tlie jaw can have nothing to do with the develop- Fio. '>'<. (') ment of tlie additional tooth. Indeed, T do not know tliat any connection between good or bad development of the jaw, and the occurrence of supernumerary teeth, can be traced. Still, my own pcrson;d observations would, perhaps, justify nic in stating that supernumerary teeth are more frequently found in perfect tlian in imperfectly developeil jaws. The relations of supernumerary to the temporary teeth during the development of the former are not, in the absence of actual ol)servations, readily understood. Now, where we have supernumerary teeth in the front part of the mouth taking precedence slightly, in respect to time, of the ])crma- nent teeth, a C[uestion is suggested as to the relations at an early period of the formation of tlic latter to tlie temporary teeth, and to tlie supernumerary, wliich it remains for future anatomists to determine. It has been suggested that tlie frequent occurrence of supernumeraries in the incisive region is due to atavism. Thtis Mr. AVilson (Brit. Dent. Assoc. .Tdurnal, March, 1<S8.)) points out tliat in tlic typical Mammalian dentition tliere are six incisors, whilst man has only four, and stiggests tiiat supernumeraries are merely tlie rea]>pearance of these suppressed teeth, and this idea is siiared by Dr. Kdwards of Madrid (Brit. Dent. Assoc. Journal, i)ec. L^S;')). A few instances have boon, howevei', put on record in wliich supernumerary teeth in the milk dentition have been followed by supcrmuneraries in the same position in the [lennanent dentition, ^fr. A. Woodiioust; has also met (') Supernumerary tooth from Ijetwcen the secouil ami tliirJ molars of the lower juw. I
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