The current life expectancy at birth in the U.S. is :

The current life expectancy at birth in the U.S. is
 
  A) 67.7 years.
  B) 72.7 years.
  C) 78.7 years.
  D) 82.7 years.

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Correct flossing and brushing of the teeth helps:
 
  A) prevent periodontal infection. B) remove plaque and prevent bad breath.
  C) prevent bleeding gums. D) all of the above.

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When mounting films, you should remember that the maxillary molars:
 
  A) have one root. B) are the longest teeth.
  C) have two roots. D) have three roots.

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The surface of the tooth that touches the cheeks is the:
 
  A) distal surface. B) lingual surface.
  C) occlusal surface. D) buccal surface.

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The occlusal side of the teeth is:
 
  A) the edge of tooth that we bite with.
  B) the large chewing surface where food is ground.
  C) to the midline.
  D) the surface next to the cheek.