Which of the following is true about direct filling gold?
Porosity is likely to occur in all direct gold restorations. Each type of gold requires a slight variation in technique to avoid either closed pores or open pores that intersect the surface.
Ref: Phillips 12 ed page no 414,415
Properly condensed mat gold has no voids
Whatever may be the type, voids are inherent
Voids can be avoided with manual condensation
None of the above