Use figure 4 (cross section of #19 MO) to answer the following question. Name the floor indicated as “a”  

Recommending a dentifrice with potassium sulfate 2 weeks prior to, during, and after whitening will help decrease sensitivity.

Indications for rubber dam placement include all of the following EXCEPT:

Tooth whitening (bleaching) is recommended prior to receiving any restorative treatment such as crowns, veneers, composite (tooth colored fillings). Whitening usually only lightens stained or discolored teeth from 1 to 3 shades lighter.

Which of the following are tools that can be used for successful self-assessment? (Mark all that apply)

Ideally the impression tray should be left in the mouth 1 minute after it is  fully set to reduce tearing.

Flouride trays are recommended for the following situations (mark all that apply):

Which “time” is best described by the following statement: “Gypsum begins to lose some of the glossy appearance and no longer flows.”

Materials needed to mix and pour gypsum include (more than one answer):

Gypsum products expand externally on setting. Improved stone expands the most.