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.

Where is acellular cementum found?

Apical 1/3
Middle 1/3
Coronal 2/3
Entire Root Surface

The correct answer is: Coronal 2/3

Acellular cementum is mainly found in the coronal two-thirds of the root surface of the tooth. This type of cementum forms first during tooth development and is characterized by a lack of cellular components. Acellular cementum helps anchor the tooth to the surrounding alveolar bone through the periodontal ligament fibers. Therefore, the answer "C. Coronal 2/3" is correct. In contrast, the apical third of the root typically contains cellular cementum, which is formed after tooth eruption and is capable of repair and regeneration, unlike acellular cementum. The middle third of the root does not usually have a specific type of cementum associated with it. The entire root surface is not uniformly covered by acellular cementum.