Close  
Figure 1: (a) Graph showing comparison of mean compressive strength (in MPa) of Group 1 and Group 2 after 1 h, after 24 h, and on days 4^{th}, 7^{th}, and 10^{th}; (b) Graph showing comparison of mean of Vickers hardness number of Group 1 and Group 2 after 24 h and on days 4^{th}, 7^{th}, and 10^{th}; (c) Example graphs of coefficient of friction during the single test with running average: Couple of amalgam material using recycled mercury and enamel; (d) Example graphs of coefficient of friction during the single test with running average: Couple of amalgam material using commercially available mercury and enamel 
