[shared_counts]
Take the stress out of shaping difficult canals. Take control with KontrolFlex
In today’s market, NiTi instruments are available along a spectrum that spans from pure austenitic (A) phase instruments to pure martensitic (M) phase instruments. These two forms represent two crystalline structures of the same nickel-titanium metal, each with different characteristics. Traditional NiTi files are in the austenite phase at room temperature and are referred to as “Shape Memory” files (for example, Brasseler’s ESX® files). Alternatively, heat-treated files are in their martensitic crystalline phase at room temperature, and these files are referred to as “Controlled Memory” files (for example, Brasseler’s KontrolFlex™ files).
The clinical performance of two files of similar design and size can be remarkably different depending on their phase state (“A” or “M”). In general, “A” files are more resistant to excessive torque and less resistant to cyclic fatigue, while “M” files are just the opposite. Also, “A” files will be stiffer and sharper than “M” files of similar size and shape.
KontrolFlex files will rise to their best advantage when
treating severely curved canals or cases with limited access
where pre-curving is advantageous (advanced cases).
ESX® (“A”) and KontrolFlex™ (“M”) rotary files are therefore best used for different circumstances: ESX files will serve you best when you want to be as efficient as possible (basic cases), while KontrolFlex files will rise to their best advantage when treating severely curved canals or cases with limited access where pre-curving is advantageous (advanced cases).
KontrolFlex (Controlled Memory)
KontrolFlex files are heat-treated and are available in two distinct metallurgies designated as “Series One” and “Series Two.” The first is a very pure version of a heat-treated file that results in a very ductile, cyclic-fatigue-resistant instrument. It is ideal for severe curves, getting around ledges, and difficult access. It can be pre-curved and will hold its curve once placed as well as any other file available. As a pure “M” phase instrument, it will be very flexible but softer and subject to unwinding easier than some other “M” phase instruments (but no other instrument will be more flexible and hold its curve better). It is even possible to put a “J hook” on the tip similar to a stainless steel hand file. Series Two is intended for those looking to have a file that “is the best of both worlds.” It is less flexible and cyclic fatigue resistant than the Series One KontrolFlex, but less susceptible to unwinding as the result of torque.
Your case selection ultimately dictates what file system(s) are best suited for your practice. Contact Brasseler today to schedule a demonstration of these files in the comfort of your office.
KontrolFlex features
Featuring patented controlled memory NiTi*
• Superior flexibility and resistance to cyclic fatigue
• Extensive range of tip sizes and tapers for constant or variable tapered treatment approach
• Ideal for challenging canals
• Available in two distinct metallurgies* Patent Numbers: 8911573, 9005377
This information was provided by Brasseler USA®.
Stay Relevant With Endodontic Practice US
Join our email list for CE courses and webinars, articles and more..
