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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Why is it important to place stops when constructing a custom tray?

To provide aesthetic appeal
To ensure the impression material doesn't run out of the tray
To enhance comfort for the patient
To minimize material costs

The correct answer is: To ensure the impression material doesn't run out of the tray

Placing stops when constructing a custom tray is crucial because they serve to prevent the impression material from flowing out of the tray during the impression-taking process. Stops create physical barriers that help to control the amount of impression material that can be displaced when the tray is filled, ensuring that it remains contained within the designated area. This is essential for obtaining accurate impressions, as any overflow could result in voids, distortions, or an incomplete capture of the oral structures, ultimately affecting the fit and outcome of the dental prosthetics or appliances being fabricated. Properly functioning stops enhance the reliability of the impression technique, contributing to better treatment results.