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!

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!

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What direction do the primary enamel rods in the cervical third run?

Occlusal
Mesial
Distal
Buccal

The correct answer is: Occlusal

The primary enamel rods in the cervical third run in an occlusal direction. The occlusal direction refers to the chewing surface of the tooth, which is the top surface that comes into contact with the opposing teeth. This direction is important because it allows for efficient chewing and grinding of food. Options B, C, and D are incorrect because the enamel rods do not typically run in those directions in the cervical third. The mesial direction refers to the side of the tooth closest to the midline of the mouth, the distal direction refers to the side of the tooth farthest from the midline of the mouth, and the buccal direction refers to the side of the tooth closest to the cheeks.