INBDE (Integrated National Board Dental Examination) Practice Exam

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Prepare for the INBDE with our comprehensive quiz that features interactive questions and detailed explanations. Hone your skills and gain confidence before the big test!

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Which TMD condition does not involve a clicking sound but can cause the jaw to lock?

  1. Disc displacement with reduction

  2. Disc displacement without reduction

  3. Myofascial pain syndrome

  4. Arthritis

The correct answer is: Disc displacement without reduction

Disc displacement without reduction refers to when the jaw joint is not aligned properly, but there is no noticeable clicking sound. This can lead to difficulty in opening or closing the mouth due to the jaw locking. Option A, disc displacement with reduction, involves clicking or popping sounds when the jaw is moved. Myofascial pain syndrome (C) affects the muscles and soft tissues of the jaw, causing pain and discomfort, but does not involve a locking of the jaw. Arthritis (D) may also cause jaw pain and stiffness, but it is a separate condition and not specifically related to TMD.