Evaluation of Different NiTi Rotary Files With NiTi Hand Files to Postoperative Pain Effects : A Randomized Controlled Clinical Trial

NiTi K type hand file (Perfect Medical Instrument Co., Ltd. Shenzhen, China), Contrary to stainless steel files, turning is produced with the buckling method. torsional resistance and bending resistance of files compared to stainless steel files found more successful in comparison. 16 mm of the files are finished It has the edge. Our Work is 25mm long; 15K (white), 20K (yellow), 25K (red), 30 K (blue) files were used. NiTi K type #15, #20, #25, and #30 hand files were used with a quarter-turn pulling motion, respectively.

The ProTaper Next (PTN) system is produced by adding M-Wire alloy to the ProTaper Universal (PU) system. With the M-Wire alloy, it is aimed to increase the flexibility and cyclic fatigue resistance of the files. The combination of three important design features in PTN files, including changing taper on a single file, M-wire technology and offset design, is one of the important features that distinguish it from other files. PTN X1 and X2 files have both an ascending and a descending conical design on a single file; PTN X3, X4 and X5 files have a constant taper from D1-D3, then taper design that tapers off over the rest of their active segments.

They are produced by applying Gold-wire process to the WaveOne (WO) system. The WOG file system exhibits repetitive back-and-forth mutual 'reciprocation' motion during preparation, in contrast to the continuous rotational motion. While rotating 150° counterclockwise during the reciprocating motion, clockwise It turns 30° in the direction of, and after 3 cycles, it completes 1 full cycle. Thus, it contributed positively to the file reaching the apical without applying excessive pressure, increasing the cutting efficiency, and accelerating the coronal movement of the debris. Small (yellow-20/0.07), WO Primary (red-25/0.07), and WOG Medium (green-35/0.06) files were used with the appropriate speed and torque values recommended by the manufacturer (300 rpm and 2.0 Ncm) by applying crown down technique. WOG files were operated in a reciprocating motion (150° counterclockwise, 30° clockwise).

AF Baby rotary file is specially designed for milk teeth. Entry file 11 mm other the files are 16 mm long and consist of 4 different rotary instruments; (17/.08), (20/.04), (25/.04) and (30/.04).The cross-sections of the files are triangular and heat treatment is applied to the NiTi wire. produced as a result. Thus, an increase in resistance to cyclic fatigue and an increase in dentin It is aimed to reduce screwing. Root canal thanks to its flexibility It adapts very well to the curvatures in its anatomy. AF Baby rotary files #20, #25, and #30 were used with the crown down technique with the appropriate speed and torque values (350 rpm and 2.0 Ncm) recommended by the manufacturer.

EndoArt NiTi Pedo Gold file is specially designed for primary teeth. 18mm length consists of 4 different rotary tools: (15/06) white, (20/04) yellow, (25/04) red, (30/04) blue. The cross-sections of the files are triangular, and Gold wire technology is used in the production phase. were produced using Thus, a titanium oxide layer on the surface of the instrument Happened. Thus, it is more flexible and more flexible than conventional NiTi alloys. resistant and 2 times better cyclic fatigue resistance than conventional files exists. EndoArt NiTi Pedo Golf File; EndoArt NiTi Pedo Gold #15, #20, and #30 files were used with the crown down technique with the appropriate speed and torque values recommended by the manufacturer (350 rpm and 2.0 Ncm).