Tray home whitening systems can be sold OTC. Which of the following are disadvantages of tray systems sold OTC?
a. Do not adapt to teeth properly
b. Not trimmed to prevent tissue sensitivity
c. Both a and b
d. None of the above
c
RATIONALE: Over-the-counter tray systems do not adapt to teeth properly and are not trimmed to prevent sensitivity.
You might also like to view...
When calculating the quantity of discharge, you should use the ____ coefficient for a hydrant with a square edge.
A. 0.7 B. 0.8 C. 0.9 D. 1.0
In code B2210ZZ, the 0 denotes low osmolar contrast.
Answer the following statement true (T) or false (F)
Which vessels collect the venous blood from the anterior side of the heart?
a. thebesian veins c. coronary sinus b. great cardiac veins d. middle cardiac vein
The phase of the cardiac cycle when the heart is pumping blood out to the body, also known as the contraction phase, is:
A. diastole. B. automaticity. C. systole. D. conductivity.