Hyflex® CM rotary instruments have outstanding clinical fatigue creates the unique surface of the new Niti files and makes the. Hyflex EDM. HyFlex® Controlled Memory NiTi files have been manufactured utilizing a unique process that controls the material’s memory, making the files extremely flexible. Hyflex CM and EDM Files: Revolutionizing the Art and Science of .. Larger NiTi instruments may transport the canal space, causing strip.

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Current challenges and concepts of the thermomechanical treatment of nickel-titanium instruments. CM NiTi files have been manufactured using a special thermomechanical process that controls the memory of the material, making the files extremely flexible but without the shape memory of other NiTi.

This occurrence was explained by the manufacturer: Articles from Journal of International Oral Health: Welcome to Dental Directoryplease sign in to view prices and order items. Received May 10; Accepted Aug Particularly in root canals with abrupt curvatures this can help avoid the creation of steps. These files respond to pressure, torque, and resistance with a lengthening of the spirals, and, therefore, increases the fracture resistance.

Furthermore, many studies showed the new CM-wire manufacturing process hyflxe produce NiTi rotary instruments that were more flexible and more resistant to cyclic fatigue than instruments produced by a traditional manufacturing process or a thermally treated NiTi alloy M-wire.

Comparison of the mechanical behavior between controlled memory and superelastic nickel-titanium files via finite element analysis. A series of proprietary thermomechanical processing procedures has been developed with the objective of producing SE NiTi wire blanks that contain substantially stable martensite phase under clinical conditions.

BoxRiyadhSaudi Arabia. Access cavities were prepared on 12 plastic teeth using 2 and 4 high-speed round carbide burs Dentsply-Maillefer, Ballaigues, Switzerland. All files that exhibited changes at the tip were able to be restored after autoclaving.


The defects for each file after use and after autoclaving were recorded.

Three-dimensional analysis of root canal geometry by high-resolution computed tomography. National Center for Biotechnology InformationU.

Topographic Analysis of HyFlex® Controlled Memory Nickel–Titanium Files

Nil Conflict of Interest: This website uses cookies. Fatigue and mechanical properties of nickel-titanium endodontic instruments. Irrigation with distilled water was performed frequently when using the files. This gives the file the ability to follow the anatomy of the canal very closely, reducing the risk of ledging, transportation or perforation. Furthermore it will niri the files making them a lot more resistant to cyclical fatigue.

A Chi-square test showed that the deformation curve: Before the initial scans were performed, a customized jig was fabricated, and each file was mounted such that it could be placed in the same position before and after use. The explanation for this phenomenon may be that heating transforms the metal temporarily into the austenitic phase, which makes it possible for the file to regain its original shape before cooling down again.

Coltene Hyflex CM Rotary File

Comparison of defects in profile and protaper systems after clinical use. Mechanical properties of controlled memory and superelastic nickel-titanium nitl used in the manufacture of rotary endodontic instruments.

Follow Dental Directory on: A major innovation in endodontics has been the introduction of nickel-titanium NiTi alloy to manufacture root canal instruments, mainly due to the superelasticity of the NiTi alloy, which provides increased flexibility and allows the instruments to effectively follow the original path of the root canal. Influence of rotational speed, torque and operator’s proficiency on ProFile failures.

Footnotes Source of Support: Influence of structure on nickel-titanium endodontic instruments failure. Fatigue testing of controlled memory wire nickel-titanium rotary instruments.

At the beginning ofa series of studies 12 – 15 found that changes in the transformation behavior via heat treatment were effective in increasing the flexibility of NiTi endodontic instruments.


Introduction A major innovation in endodontics has been the introduction of nickel-titanium NiTi alloy to manufacture root canal instruments, mainly due to the superelasticity of the NiTi alloy, nlti provides increased flexibility and allows the instruments to effectively follow the fipes path of the root canal. Also it provides a clear visual opportunity to verify safe continuation of file use. It was observed that flies of the files showed defects that appeared as lengthening of the spirals due to the unwinding without fractures.

Almost all of the used files exhibited significant visible defects without fractures, including unwinding and curving associated with unwinding. Canal shapes analysed by micro-computed tomography. filds

HyFlex Rotary Files

Support Center Support Center. These changes were categorized according to the severity as follows:.

Phase transformation behavior and bending properties of hybrid nickel-titanium rotary endodontic instruments. CM NiTi files are unlike conventional files that exhibit a stress-induced phase transformation; instead, these files show behavior that is similar to what is termed martensitic-active or shape memory, which produces remarkable fatigue resistance.

This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.

Each file was used until visible defects were observed. You need to be signed in to order items. Ninan E, Berzins DW. Only 4 files showed slight defects at the tips of the files.