On extraction, with notes on the anatomy and physiology, of the teeth, for medical students . icle or sac This con-nective-tissue casing is termed the follicular wall(Fig. 8, a). Certain phenomena are observed in the formation ofthis follicle, with regard to the epithelial debris result-ing from the severance of the cord. It is not necessaryto enter on this point. Suffice it to say that thereseems to be a proliferation of these cells, which findtheir way into different parts of the dermal tissue, andmostly become removed. But it is supposed that theymay be the origin of perverted development o
On extraction, with notes on the anatomy and physiology, of the teeth, for medical students . icle or sac This con-nective-tissue casing is termed the follicular wall(Fig. 8, a). Certain phenomena are observed in the formation ofthis follicle, with regard to the epithelial debris result-ing from the severance of the cord. It is not necessaryto enter on this point. Suffice it to say that thereseems to be a proliferation of these cells, which findtheir way into different parts of the dermal tissue, andmostly become removed. But it is supposed that theymay be the origin of perverted development of dentalstructures. The tissue of the tooth-sac divides into two distinctlayers—an outer and an inner. The inner representsthe matrix from which the cementum is formation of cementum is similar to that of outer layer ultimately becomes the periosteum ofthe socket and the pericementum of the root. DEVELOPMENT •5 We have now arrived at tin: follicular, which ispractically the tnial, stage in the process of develop-ment prior to the conversion of the se[)arate con-. FiG. 8.— Dental Follicle. (After Sudduth). a, Follicular wall; /, external epithelial layer ; c, internal epithelial layer; </, stel-late reticulum or enamel pulp ; e, odontoblasts forming dentine; f, pulp.(Dingrammatic.) stituents into the structures forming the tooth and itsassociated tissues. If we examine now a section of the dental follicle(Fig, 8), we can easily trace all the individual partswhich are still in the same relationship to one another : i6 ON EXTRACTION OF THE TEETH, ETC. First, the follicular wall, which is a connective-tissue sacing arising, as before stated, from the papil-lary base, is ultimately divided to form the periosteumand the cementum of the root (Fig. 8, a). y r—- ^o^
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Keywords: ., bookcentury1800, bookdecade1890, bookidonextraction, bookyear1896
