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!

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At what age can a congenitally missing mandibular P2 first be diagnosed?

6 years old
4 years old
8 years old
10 years old

The correct answer is: 6 years old

A congenitally missing mandibular P2, which is a missing tooth in the lower jaw, can be first diagnosed at the age of 6 years old. By this age, the permanent teeth have usually erupted and it becomes noticeable if a tooth is missing. Options B, C, and D are incorrect because by 4, 8, and 10 years old respectively, most children would have already developed their permanent teeth and a missing tooth would have likely been noticed earlier. Additionally, if the condition is congenital, it means it was present at birth or developed during fetal development, so it could potentially be diagnosed even earlier than 6 years old. Therefore, the best option is A.