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Efficient filing system
Breakage is result of bad technique with any file .
"The Sequence are good files...but my postdocs gave up on them due to unexpected breakage.
They use some Protaper and K3's."
So be careful he meant Sequence not RaCe. They are not the same. Your experience is with RaCe
My guess is that Fred's postdocs used the sequence files in the "sequence (pun intended) "
recommended by east coast "rapid courses" advocates/promoters. Crown down and without
If you use the Sequence files in a VTVT in a way similar to the way Fred advocates doing with
the K'3's you reduce the separation rate to almost zero. Having said that.... I prefer
"non-experienced endodontists" to use the K3's they are definitely more resistant than the
Sequence because they engage less. But..in the wrong heavy hands they can separate also and
they are harder to retrieve or bypass
Protapers by the contrary are being promoted/advocated by very very good endodontists, almost
as good as Mounce or Barnett ;-) So they advoate the right way to use'em but they certainly
can separate when abused and used wrongly because their tips can engage more in fins.
I am a great fan of the AET way (stainless steel files) in a reciprocating handpiece because
if used right are less fraught with problems, however the shapes somewhat are less esthetic
than the shapes you can obtain with NiTi's. No NiTi is perfect not even Jim Roanes or Chck
Goodis'es which are also very good.
But esthetics in the X-ray is more obtainable with NiTI's.
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Authors have been credited for the individual posts where they are.