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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Where is the danger zone for perforation risk in mandibular molars?

Mesial side of mesial root
Distal side of mesial root
Buccal side of distal root
Lingual side of distal root

The correct answer is: Distal side of mesial root

When performing root canal treatment on mandibular molars, it is important to be aware of the potential perforation risk, which can occur when the instrument used to clean out the tooth's canals breaks through the thin walls of the root. The danger zone for this risk lies on the distal side of the mesial root, as it has thinner walls compared to the buccal or lingual sides. Therefore, options A, C, and D are incorrect as they do not accurately identify the location of the danger zone.