Clear aligner & retainer materials

Zendura FLX

The first dual-shell material for clear aligners.

Two thin outer shells give rigidity and force; an elastomeric middle layer adds comfort and flexibility. The result: consistent force delivery with less insertion stress on teeth.

Meet Zendura Guard

Designed for everyday retention

SMART PERFORMANCE. TRUSTED TECHNOLOGY.

After active orthodontic treatment, the retainer becomes the most critical appliance for the patient: it maintains the position of the teeth and prevents relapse. Built on a tri-layer architecture, Zendura Guard is engineered to resist deformation and give a softer, more flexible material response than traditional single-layer thermoplastics.

Clear retainers must do more than “hold teeth.” They must:

• Resist tearing, cracking and deformation
• Stay clear and stain resistant
• Support a comfortable wear experience without sacrificing retention

Flexural modulus is how much a retainer resists bending during insertion, removal and chewing. Materials that are too stiff feel harsh, concentrate stress and are more prone to cracking. Lower stiffness means a more stress-absorbing material with a softer feel.

Tear strength is a material's resistance to a crack spreading once damage begins. Small defects such as trimmed edges or notches can quickly become full fractures in daily use. Higher tear strength means a retainer that resists cracking.