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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Which tooth is the widest MD (mesiodistal)?

maxillary first molar
mandibular second molar
mandibular first molar
maxillary second molar

The correct answer is: mandibular first molar

The mesiodistal measurement refers to the width of a tooth from the front (mesial) to the back (distal) direction. The mandibular first molar is the widest tooth in this direction because it has five cusps, which leads to a larger overall size compared to the other options. The maxillary first molar has four cusps and is slightly narrower MD. The mandibular second molar has four cusps as well, but it is generally smaller in size compared to the first molar. The maxillary second molar also has four cusps but is typically narrower MD than the first molar.