When drug toxicity occurs due to a substance not used as prescribed or not used properly, this is known as _________

The Universal Number for the right maxillary first premolar is:

A. 4 B. 5 C. 12 D. 13

The primary reason for having a minimum of two examination rooms per physician is that it ____. 

A. allows other physicians to use the room B. enables the medical assistant to prepare one room while the physician examines a patient in the other C. can serve as an additional waiting area for patients when the reception area is full D. can be used as a room for a contagious patient who comes to the office E. provides a place for the physician to read journals and do paperwork