INBDE (Integrated National Board Dental Examination) Practice Exam

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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!

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What does the Bennet angle describe?

Vertical movement of the jaw
The opening angle of the jaw
Angle obtained after nonworking side condyle has moved anteriorly and medially relative to sagittal plane
Rotation of the mandible

The correct answer is: Angle obtained after nonworking side condyle has moved anteriorly and medially relative to sagittal plane

The Bennet angle describes the angle obtained after the nonworking side condyle has moved anteriorly and medially relative to the sagittal plane. This movement occurs during lateral excursion of the mandible in the working side. Understanding the Bennet angle is crucial in evaluating and diagnosing temporomandibular joint (TMJ) disorders and ensuring proper functioning of the jaw. Option A (vertical movement of the jaw) is incorrect as the Bennet angle specifically refers to the movement of the condyle in a horizontal plane during lateral excursion, not vertical movement. Option B (the opening angle of the jaw) is incorrect as the Bennet angle does not pertain to the angle of opening the jaw; rather, it is related to the movement of the condyle on the nonworking side. Option D (rotation of the mandible) is incorrect as the Bennet angle is not related to the rotational movement of the mandible but rather to the movement of the nonworking side condyle during lateral excursions.