California Registered Dental Assistant (RDA) Written Practice Exam

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The end of the HVE tip should be positioned ________ the occlusal surface of the tooth being prepared.

  1. Directly on

  2. Slightly beyond

  3. Far above

  4. At a considerable distance from

The correct answer is: Slightly beyond

The end of the HVE tip should be positioned slightly beyond the occlusal surface of the tooth being prepared in order to effectively remove debris and maintain good suction. Directly on, or at a considerable distance from, the occlusal surface would not be as effective and may lead to debris and saliva remaining in the mouth. Far above would not allow for effective suctioning and could potentially injure the patient's soft tissues.

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