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60-74 micrometer sized particles contained in:

 # 60-74 micrometer sized particles contained in: 
A. Coarse grit diamond bur 
B. Medium grit diamond bur 
C. Fine grit diamond bur 
D. Very fine grit diamond bur 


The correct answer is C. Fine grit diamond bur.

The particle sizes of coarse, medium, fine and very fine grit diamond burs are 125-150 micrometer, 88-125 micrometer, 60-74 micrometer and 38-44 micrometer respectively. 

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