Transactions of the odontological society of Great Britain . Fig. 3.—Uppeu Jaw of a Fcetus 1-4 Weeks Old. The epithelial structures viewed from above. a, Tlie tooth-band or epithelial lamina. b, The lip furrow band. c, The lip furrow. d, The tooth germs. The free growing edge of the tooth-baud is seen above and behindthe germs of tlic ten temporary Fig. 4.—Left Half of the Lowee Jaw of a Fcetus 17 Weeks Old. «, The tooth-band or epithelial lamina. «, The continuation of the tooth-band beyond the genu of thesecond milk molar, and indicating the point at whicli the germ of thefirst perma
Transactions of the odontological society of Great Britain . Fig. 3.—Uppeu Jaw of a Fcetus 1-4 Weeks Old. The epithelial structures viewed from above. a, Tlie tooth-band or epithelial lamina. b, The lip furrow band. c, The lip furrow. d, The tooth germs. The free growing edge of the tooth-baud is seen above and behindthe germs of tlic ten temporary Fig. 4.—Left Half of the Lowee Jaw of a Fcetus 17 Weeks Old. «, The tooth-band or epithelial lamina. «, The continuation of the tooth-band beyond the genu of thesecond milk molar, and indicating the point at whicli the germ of thefirst permanent molar is , The lip furrow band,c, The lip furrow.(/, The tooth germs. CASUAL COMMUNICATIONS. 193 more or less standing by themselves. The sub-divisionsof the pulp cavities in the milk molars are very clear. Theend of the tooth-band (behind milk molar 2j has thickened,and also grown around the papilla of the first permanentmolar. Model V. x 40. Shows the two incisor teeth of the right side of the underjaw of a foetus of 30 cms. long (24 weeks old), in connectionwith the tooth-band, and a portion of the epithelium of thejaw, so far as it includes the tooth furrow. To understand the model exactly, one must grasp thefact that the tooth furrow in this stage is turned to thehinder surface of the jaw. A larger portion of the centraltha
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectdentist, bookyear1868
