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.
Health Professions
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All of the following are examples of congenital anomalies EXCEPT:
a. arteriovenous malformation b. craniosynostosis c. herniated nucleus pulposus d. intracranial aneurysm
Health Professions
Which of the following are a part of the urinary system?
A. kidneys B. ureters C. ovaries or testes D. both a and b
Health Professions