The incorporation of epithelial cells by cementum.
D000818:Animals; D003739:Dental Cementum / Q000502:physiology*; D003810:Dentinogenesis; D004848:Epithelium; D008854:Microscopy, Electron; D008963:Molar / Q000254:growth & development; D051381:Rats; D014092:Tooth Root / Q000254:growth & development*