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.

    124/808 page 108
    lection (if isupei-munerary teeth at mj' disposal. These^ with a considerable nundjcr collected b\- myself, form a series sufficiently large to justify the observer in regarding any peculiarity of form which prevails throughout the col- lection as a special cliaracteristic of supernumerary teeth. After removing from the scries those which are not dis- tinguishable from normal forms, we have remaining, teeth tlie croo ns of wliich exhibit the following characters :—The lingual and labial surfaces arc not distinguished by any difference of f(irm. Tiie enamel terminates on the neck oi' Fid. 49. (1) the tooth in an even line, differing in this respect from the terminal line in ordinary teeth. The crown of the tooth will, in the majority of cases, present a simple cone with a sharp apex ; in other instances, tiie ])oint will be replaced by an irregularly depressed surface, corresponding in charac- ter to the masticating surface of a l)icuspid or molar, ^b.ire rarely the conical or cylindrical form is lost, ;uid in its place we have a more or less flattened crciwn, the grinding surface l>cing marke<l longitudinally with a deej) hssure. Several exam])les have come under my observation, in which the crown has been di\'i(led in three (ir four plates, meeting at a common centre in sucli a manner as to iiroduce a cross. It woidd, however, be h(i])ek'ss to attempt to desci'ibe more than the general charactci's (if su]iernumerarv teeth, inas- mueli as tiie minor dilVerences (if fbrm are inhnilcly varied ; no two are precisely similar. (') SlioH'f; the fniiit view nf a s]icciiiien in wliii-li a s>i])cinMiiicrary tootli I'xlcnial 1(1 tlic rrmil tc'clli ii(_'(.uiiics the spact; lit'tweeii llio lateral iiici.vor ;iiul canine tedli.
    digitised image 1
    digitised image 2
    digitised image 3