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Instrument of choice for biomechanical preparation in fine root canals of double curved canals is

 # Instrument of choice for biomechanical preparation in fine root canals of double curved canals is:
 A. H file
B. K flex file
C. Unifile
D. Reamer


The correct answer is A. H file.

H file or S file is also used for finishing coronal third of root canal. It is also used for biomechanical preparation of fine canals. Used for flaring the fine and double curved root canals and is used in McSpadden compaction technique.



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