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.

It is not rare to see teeth, generally canine, make their eruption from the vault of the palate; and these teeth are not generally supernumerary, but examples of vice and deviation of position.