INBDE (Integrated National Board Dental Examination) Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Ace your INBDE with our comprehensive practice exam. Featuring detailed explanations, interactive flashcards, and a wide array of multiple-choice questions designed to mirror the real test. Get ready to surpass your expectations!

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.


Does arch length decrease from mixed to permanent dentition?

  1. True

  2. False

The correct answer is: True

The arch length generally decreases from mixed to permanent dentition. During mixed dentition, the jaw bones of children are still growing, leading to a decrease in space for the permanent teeth to come in. This often results in crowded or misaligned teeth. Additionally, the eruption of the third molars (wisdom teeth) during the late teen years can also contribute to a reduction in arch length. However, there may be individual variations and exceptions to this general trend. Option B is incorrect because it suggests that arch length remains the same or increases from mixed to permanent dentition, which is not typically the case.