Treatise on dental caries : experimental and therapeutic investigations . ve,through the rapid exposure of the ivory. The circumstances which bring on this special form areinflammatory conditions of the free borders of the gum,or the masses of concreted mucus which remain at thispoint in contact with the teeth during the course of cer-tain diseases. A fissure thus formed has its length in adirection at right angles to that of the tooth and ordi-narily remains quite narrow; characteristics which havegiven it the name of serpiginous caries, a term used byDelestre to designate This alteratio
Treatise on dental caries : experimental and therapeutic investigations . ve,through the rapid exposure of the ivory. The circumstances which bring on this special form areinflammatory conditions of the free borders of the gum,or the masses of concreted mucus which remain at thispoint in contact with the teeth during the course of cer-tain diseases. A fissure thus formed has its length in adirection at right angles to that of the tooth and ordi-narily remains quite narrow; characteristics which havegiven it the name of serpiginous caries, a term used byDelestre to designate This alteration, from its be-ginning thus disposed in linear form, may pursue con-secutively the progress of ordinary caries, and, followingin its development one horizontal course, finally causecomplete section of the crown. It may also, after a cer-tain time, pass to the condition of dry caries. The cav-ity then presents a singular appearance, not unlike thatof a saw-cut, with smooth, polished, hard, and resistant 1 Du Ramollissement des Gencives. Th&se inaugural, 1861, p. Fig. 1. ANATOMIC LESIONS OF DENTAL CARIES. 3< walls (Fig. 1, a a). These are the cavities which Duvaland several other authors designateas caries taking on the look of ivear,and whose mode of production hasnot been explained. They do, infact, have every appearance ofveritable wear by friction, but ourobservations upon the succession ofthe different periods of the mal-ady have proved to us that thesefissures so nicely polished ai-e nothing else than caries ofthe tooth-neck passed to the condition of spontaneouscure, or dry caries. The wall of a cavity of caries of the second periodexamined with an excavator or a file is found to be soft-ened in proportion to the rapidity of progress of thedisease, and to the energy of its active cause ; the in-strument penetrating easily through the mass and thusshowing the thickness of the softened layer. This maybe removed piecemeal in layers which present every ap-pearance of i
Size: 1597px × 1564px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, bookpublisherbostonhoughtonosgo
