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.


How much MD width does an occlusal rest need to be?

  1. 1/4

  2. 1/3

  3. 1/2

  4. 2/3

The correct answer is: 1/3

An occlusal rest needs to be 1/3 of the MD width of the tooth. The incorrect options of 1/4, 1/2 and 2/3 are either too narrow or too wide for proper support and stability of the occlusal rest. Therefore, 1/3 is the optimal width for an occlusal rest.