National Dental Assisting Examining Board (NDAEB) Practice Exam

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Prepare for the National Dental Assisting Exam with comprehensive quiz questions, including multiple choice and detailed explanations. Equip yourself for success!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What does the gauge of a needle refer to?

  1. The length of the needle

  2. The color of the needle

  3. The thickness of the needle

  4. The angle of the needle

The correct answer is: The thickness of the needle

The gauge of a needle specifically indicates its thickness or diameter. A higher gauge number corresponds to a thinner needle, while a lower gauge number represents a thicker needle. Understanding needle gauge is essential in clinical practice, as it affects the flow rate of fluids and can influence patient comfort during procedures like injections. Selecting an appropriate needle gauge is critical for achieving desired outcomes in various dental procedures, such as local anesthesia administration. The length of the needle, its color, and the angle are important aspects in clinical settings but are not determined by the gauge measurement.