A standard for radiopacity of root-end (retrograde) filling materials is urgently needed.

AIM To assess the radiopacity of materials used, or recommended for use, as apical root-end (retrograde) fillings. METHODOLOGY The radiopacity of 14 materials falling into the category of root-end filling materials was measured in equivalent millimetres of aluminium (mm Al) using a new computerized method. These included temporary or intermediate sealing… CONTINUE READING