Anatomy & Histology · single question
How is space created for the eruption of the mandibular permanent molars?
Show answer and explanation
Correct answer: C. Resorption at the anterior border of the ramus
- A. Incorrect. The posterior border is a site of deposition, not resorption.
- B. Incorrect. Deposition at the anterior border would shorten the available arch length, the opposite of what occurs.
- C. Correct. The mandible lengthens by resorbing bone at the anterior border of the ramus while depositing at the posterior border. This relocates the ramus posteriorly and creates arch length for the molars.
- D. Incorrect. Growth at the anterior body/symphysis contributes very little to molar space.
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