These special hand files are made up of Stainless Steel Alloy. With more refined cutting edge , triangular/square cross section , these files lasts upto 8-10 endodontic cases. INDICATIONS: For cleaning and shaping of canals. Negotiating the canals with hand files prior to using rotary files. Can be used as a pre-bent file in curved canals. CONTRAINDICATIONS: For severely curved canals . Watch Winding Technique: The use of the file in a forwards and backwards motion, as if watch winding, with slight apical pressure. This allows the file to effectively debride the canal dentine by moving slowly down the canal. For K-type files, once the file has reached the desired working length a push and pulling action is used around the circumference of the canal, while only maintaining contact with the canal wall on the outstroke to minimise a debris blockage apically.
K-files also cut on insertion and withdrawal. Extraordinarily sharp and mirror-like finished edges. High ductility make for excellent working characteristics. K-type file has an angle of attack that is equal in either direction. Compared to other types of files, K-files are not very efficient, but there is no loss of cutting efficiency regardless of the direction they are rotated.