Laghios CD1, Benson BW, Gutmann JL, Cutler CW.
Int Endod J. 2000 Jul;33(4):311-5.AIM: This study compared the radiopacity of tetracalcium phosphate (TTCP) and 11 root-end filling materials relative to human dentine.METHODOLOGY: Specimens of 2 mm thickness and a graduated aluminium stepwedge were placed on dental X-ray films and exposed to an X-ray beam. The optical densities of the specimens and aluminium steps were measured. The optical densities of the specimens were correlated to the equivalent thickness of aluminium with a regression analysis equation. Read More