Cellular Dynamics in Root Formation of Teeth in Rhesus Monkeys

Abstract
The cellular kinetics around the developing root apex of rhesus monkey teeth were studied using tritiated thymidine. Labeled cells of the epithelial diaphragm did not show migration into the periodontal ligament to become cell rests of Malassez. The periodontal region adjacent to the root apex was a zone of active proliferation of connective tissue cells.