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File systems

The various kinds of file systems are:

1. C+ Files
   
2. K-Files
   
3. Golden Mediums
   
4. Hedström Files
   
5. Profile
   
6. ProTaper
   

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C+ Files

The C+ Files are perfect to open initially. Therefore they are only available in small sizes. The file is tougher because of its square cross section.



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K-Files

The K file is the standard hand file. When penetrating small canals like the fourth canal in the upper molar, the 006 and 008 files are indispensable. They very quickly wind off and then lose their filing capacity.

They are also very convenient when you want to pass broken NiTi files.

Click on the camera to see a short movie of the procedure. (Attention: the size of the file is 13Mb.)

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Golden Mediums

Golden mediums are used because the K files in small sizes have a big difference in terms of percentage. The most useful in-between sizes are: 12, 17 and 22.

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Hedström Files

The characteristics of hedström files make them fit for cleaning oval canals. As you can scrape with them, they take off more. They are also handy when removing the carrier of Thermafil. By bringing two hedström files opposite each other at the same time along the carrier, the grip will considerably improve.

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Profile

Rotating instrumentarium should only be used where hand files already have been. In the pulpa chamber there has to be sufficient Hypochlorite. Rotating files are then cleaned in the liquid through centrifugal force. Profile is a passive file system. Profile are used in an up- and downward movement (5-10 seconds). From bigger to smaller. Crown-down.

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Tip: Specially rotating NiTi files can break. Never go into a canal with a rotating file where a handfile nr. 15 to the apex has not yet been. Where do these files break? In most cases in the mesial canals of the lower molar or in the mesiobuccal canals of the upper molar. Why do they break there? Because canal curvings from buccal to palattinal/lingual are difficult to see, whereas the canals in question regularly have contact apically (curving towards each other). How can the break be prevented? By opening widely from the pulpa chamber in order to maintain regular access to the apex with a hand file and by rinsing at regular intervals. What to do when a file breaks nevertheless? See the earlier mentioned movie on this page.

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ProTaper

Rotating instrumentarium should only be used where hand files have already been. The pulpa chamber has to contain sufficient Hypochlorite. Rotating files are then cleaned in the liquid through centrifugal power. ProTaper is an active filing system. De S-files are used with a brushing movement. The F-files are used in a flowing movement to apical.

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Manual