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 proportion should the art portion of the dental model be relative to the overall size?

One-Half
One-Fourth
One-Third
One-Sixth

The correct answer is: One-Third

The art portion of a dental model is typically recommended to be one-third of the overall size of the model. This proportion ensures that the model accurately represents the dental anatomy while allowing adequate space for the supporting base. A one-third proportion balances aesthetic presentation and functional characteristics, which is essential in dental practice, particularly when it comes to patient education and the demonstration of dental procedures. In contrast, a one-half proportion would allocate too much space to the art portion, potentially undermining the model's functionality. One-fourth might provide insufficient detail regarding the surrounding structures, while one-sixth would not provide enough surface area for the representation of crucial anatomical features. Thus, one-third is the ideal compromise that serves both the practical and artistic needs of dental models.