It was easily removed, having been situated in a small depression
at the junction of the floor and external wall of the nasal
cavity, 22 mm. from the external nares. This patient had all her
teeth; they were placed somewhat far from each other. The tooth
resembled a milk canine; the end of the imperfect root was
covered with a fold of mucous membrane, with stratified
epithelium. The speaker suggested that part of the mucous
membrane of the mouth with its tooth-germ had become impacted
between the superior and premaxillary bones and thus cut off from
the cavity of the mouth. Another speaker criticised this fetal
dislocation and believed it to be due to an inversion--a
development in the wrong direction--by which the tooth had grown
upward into the nose. The same speaker also pointed out that the
stratified epithelium of the mucous membrane did not prove a
connection with the cavity of the mouth, as it is known that
cylindric epithelium-cells after irritative processes are
replaced by flat ones."
Delpech saw a young man in 1829 who had an opening in the
palatine vault occasioned by the extraction of a tooth. This
opening communicated with the nasal fossa by a fracture of the
palatine and maxillary bones; the employment of an obturator was
necessary.
Pages:
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479