INBDE (Integrated National Board Dental Examination) Practice Exam

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Which mandibular tooth has the shortest root?

  1. mandibular first molar

  2. mandibular second molar

  3. mandibular third molar

  4. mandibular first premolar

The correct answer is: mandibular third molar

The shortest root among the mandibular teeth would be the mandibular third molar, also known as the wisdom tooth. This is because the mandibular third molar is the last tooth to erupt and is often smaller in size compared to other mandibular teeth, resulting in a shorter root. The other options, such as the first and second molars, have larger roots to support their larger size and function. The first premolar also has a longer root compared to the third molar, as it is situated closer to the anterior region of the mandible. So, while all the options are mandibular teeth, it is the mandibular third molar that has the shortest root.

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