Principles and practice of operative dentistry . velled greatlyexceeds in amount the addition made to the length of the root during thesame period. C. S. Tomes says,* The tooth of a crocodile moves upward, tooth-pulp and all, obviously impelled by something different from mere elonga-tion ; and my own researches upon the development and succession ofreptilian teeth clearly show that a force quite independent of increase intheir length shifts the position of and erupts successive teeth. Another theory advanced to account for the process of eruption is me-chanical pressure induced by the lengthe
Principles and practice of operative dentistry . velled greatlyexceeds in amount the addition made to the length of the root during thesame period. C. S. Tomes says,* The tooth of a crocodile moves upward, tooth-pulp and all, obviously impelled by something different from mere elonga-tion ; and my own researches upon the development and succession ofreptilian teeth clearly show that a force quite independent of increase intheir length shifts the position of and erupts successive teeth. Another theory advanced to account for the process of eruption is me-chanical pressure induced by the lengthening of the dentinal papillw or formativepulp. The principal objection to this view is the improbability that theelongation of a delicate and more or less embryonic structure like theformative pulp could produce a sufficient amount of pressure upon thetooth-crown at its base to cause resorption of the overlying bony walls ofits crypt without injury to its own structure, or causing deflection of the * Dental Anatomy. Crown of timtli Forming root. Fig. 205.—Vertical se wing forming root. X 15.
Size: 1624px × 1538px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectdentist, bookyear1901
