T. Kodaka et M. Kuroiwa, SEAM STRUCTURES OBSERVED ALONG THE JUNCTIONAL LINE OF HERTWIGS EPITHELIAL ROOT SHEATHS IN RAT INCISORS, Acta anatomica, 147(3), 1993, pp. 149-151
Linear structures were occasionally found on the lingual surface of th
e cementum of infant rat incisors along the long axis of the incisors,
which are teeth that grow continuously from a persistent odontogenic
organ. The observations strongly suggest that these linear structures
on the junctional line of Hertwig's epithelial 'root' sheaths correspo
nd to the seams on the multirooted molar teeth of rats.