A. Cementum is thinnest at cej (20-50μm) B. Cementum is thickest towards the apex (150-200μm) C. The apical foramen is surrounded by cementum D. All of the above
A. Collagen fibers are oriented perpendicular to dej B. Vonkorff fibers are present C. Contain phosphophoryn D. Requires matrix vesicle for mineralization
A. Is derived from the sheath of hertwig B. Is acellular in the apical third of the tooth C. Often overlaps the enamel D. Does not contain collagen fibres