With respect to their permanent successors the sum of the mesidodistal diameters of the first and second decidous molar is generally ____________?
Correct answer: A. Greater
- A. Greater
- B. Less
- C. The same
- D. Not related
Explanation
The combined mesiodistal width of the primary first and second molars is generally greater than that of their permanent premolar successors. The resulting difference provides the leeway space during replacement of the primary molars.
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