Dental prophylaxis may be limited to:

A) once a year. B) four times a year. C) twice a year. D) None of the above

C

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Trigger points that are only painful when pressed are called:

A) Active B) Latent C) Deactivated D) Phantom

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DNA is made up of nucleotides. How many bases do nucleotides have?

a. Two b. Three c. Four d. Five

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