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!

Start Multiple Choice Practice Test
Start Flash Cards

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 wide is the periodontal ligament (PDL)?

  1. .1 mm

  2. .2 mm

  3. .3 mm

  4. .4 mm

The correct answer is: .2 mm

The correct answer is B. .2 mm. The periodontal ligament (PDL) is a specialized connective tissue that surrounds the root of a tooth and connects it to the surrounding alveolar bone. The PDL is very thin, typically ranging from 0.1 to 0.4 mm in width, with an average width of 0.2 mm. This thin layer plays an essential role in supporting the tooth within the socket, providing proprioceptive feedback, and enabling slight movement of the tooth under occlusal forces.

More Questions Like This