Which permanent tooth closely resembles the primary mandibular 2nd molar?
  1. Mandibular 1st molar
  2. Mandibular 2nd molar
  3. Maxillary 1st molar
  4. Maxillary 2nd molar
Explanation
Answer: A - The primary mandibular 2nd molar resembles the mandibular 1st molar; however, the three buccal cusps of the primary tooth are nearly equal in size.
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