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ADA NBDE National Board Dental Part I

Category - NBDE

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Each of the following bones is unpaired EXCEPT:

occipital
sphenoid
ethmoid
frontal

Explanation

Answer: D - The frontal bone forms as two separate entities, which later fuse together to appear as one bone. The occipital, sphenoid, and ethmoid bones each are unpaired, singular bones of the cranium.

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ADA NBDE National Board Dental Part I

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ADA NBDE National Board Dental Part I

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