Kerr Dental Introduces ZenFlex RT Rotary Retreatment File System

Four-file sequence incorporates design features intended to support dentin preservation, canal negotiation and procedural control.

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Kerr Dental launched ZenFlex RT, a four-file rotary system for endodontists and general dentists performing root canal retreatment.
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The files are designed to remove existing obturation material and reshape canals while helping preserve natural tooth structure.
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ZenFlex RT features a noncutting tip, a minimally invasive shaping profile, and a maximum flute diameter of 1.0 mm.
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Kerr Dental says heat treatment, variable helical angles, and variable-pitch flute geometry support flexibility, canal control, and reduced screw-in tendency.
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The four-file sequence progresses from obturation-material removal to canal reshaping, with groove markings and ISO-standard color coding to identify files.

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