In the NFPA 704 system, which of the following water reactivity rankings imply that a material may react vigorously with water?

Fluid ounces 5 = ________ milliliters

Fill in the blank with the appropriate word.

Which of the following items is important in determining the success of a recare appointment?

A) Plaque control B) Radiographic analysis C) Brand of toothbrush used D) Use of waxed or unwaxed floss