ZENFLEX RT

Advanced Instrumentation

ZenFlex RT is a dedicated NiTi retreatment file system designed to simplify root canal retreatment by combining gutta-percha removal and canal reshaping in one workflow in a safe way.
S

Safety

Patient safety first

A noncutting tip reduces the risk of ledging, transportation, and perforation, and a maximum flute diameter of 1 mm on every file adds flexibility while preserving canal space

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Efficiency, Crown Down Brushing

Soften and Drag out

This new motion, crown-down brushing, is intended to soften the gutta-percha and drag it up, with the tip and body of the file brushing the canal walls to lift out the previous obturation,

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Rethinking Retreatment

High level of technology for simplicity

I call it a high level of technology for simplicity. Success is defined by clinical outcome and performance. If we can offer an easy solution that helps the patient save their natural tooth for many years to come and allows clinicians to perform the procedure safely with predictable results, I would consider our mission Accomplished

Research

ZenFlex Publications

Clinical Demonstrations

ZenFlex Videos

ZenFlex RT Step by step technique
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October 17, 2026

ZenFlex RT Step by step technique

Step by step how to use the Z RT retreatment file

Endodontic retreatment with active tip risk of perforation and ledge formation
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September 15, 2026

Endodontic retreatment with active tip risk of perforation and ledge formation

The use of rotary files with active tip in Endodontic retreatment can run the risk of creating a ledge and eventually perforating the root canal system.

Endodontic retreatment of Gutta Percha and BC sealer with ZenFlex RT files
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September 11, 2026

Endodontic retreatment of Gutta Percha and BC sealer with ZenFlex RT files

ZenFlex RT can be used to retrieve gutta percha from the canal and eventually clean the canal walls from Bio Ceramic sealer, due to it's exceptional heat treatment and file design.

Endodontic root canal retreatment with ZenFlex RT to remove thermafil plastic carrier obturator
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September 11, 2026

Endodontic root canal retreatment with ZenFlex RT to remove thermafil plastic carrier obturator

Endodontic Root canal retreatment. Using the Zenflex RT to remove thermafil plastic carrier

Root canal retreatment with ZenFlex RT. Soften and drag
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September 11, 2026

Root canal retreatment with ZenFlex RT. Soften and drag

The new approach of root canal retreatment is to soften and drag the gutta percha out of the canal. Safer, easier, faster.

Endodontic retreatment. Crown Down Brushing
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September 11, 2026

Endodontic retreatment. Crown Down Brushing

The new motion crown down brushing in endodontic retreatment. it soften the gutta percha and drag it out of the canal.

Endodontic retreatment using ZenFlex RT full sequence.
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September 11, 2026

Endodontic retreatment using ZenFlex RT full sequence.

Endodontic retreatment and shaping at the same time with ZenFlex RT.

Endodontic Retreament with ZenFlex RT. Crown Down Brushing,
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September 08, 2026

Endodontic Retreament with ZenFlex RT. Crown Down Brushing,

Root canal retreatment using ZenFlex RT, showing the new motion. Crown Down Brushing. Very safe approach to remove gutta percha and sealer without the risk of creating a ledge.