National Dental Examining Board of Canada (NDEB) Practice Exam

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Master your National Dental Examining Board of Canada (NDEB) exams with our comprehensive practice guide. Achieve excellence in your dental certification with expertly crafted questions and detailed explanations.

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!

Practice this question and more.

Between the age of 6-12, the length of the mandibular arch from permanent left M1 to right M1 normally:

Increases
Decreases
Stays the same
Increases then decreases

The correct answer is: Decreases

During the ages of 6-12, the mandibular arch is still developing and growing. This growth usually results in an increase in length of the mandibular arch, but may also result in a decrease depending on individual genetic factors. While there is a possibility of fluctuation in length, the most common trend is an overall increase in length of the mandibular arch. Therefore, options A, C, and D are incorrect.