You have just placed the dam on a patient which is puckered…

You have just placed the dam on a patient which is puckered between the teeth and bunched on the facial surface of the teeth in the mandibular anteriors. Your self-assessment of the punching indicates that the following mistakes made were:         1.      punching the curvature too flat          2.      punching the curvature too arched          3.      punching the holes too close          4.      punching the holes too far apart

Your dentist has placed an amalgam filling on one of you pos…

Your dentist has placed an amalgam filling on one of you posterior molars. After the numbness wears off, you notice sensitivity when eating ice cream. Which characteristic of amalgam explains why this is the most common problem encountered after placing an amalgam restoration?