MTA has a proportion of 4:1 of bismuth, radio-opacity oxide Camilleri 2007 , Torabinejad 1995 In the present study proportion of bismuth oxide was 16.5% as shown in Table I .
MTA tiene una proporción de 4:1 de bismuto óxido de radiopacidad Camilleri 2007, Torabinejad 1995.