NDX Aligners are made from Zendura® FLX — A medical-grade, polyurethane material with a 3-layer construction, delivering constant and gentle forces on the teeth.
Rigid outer layer: Protects the aligner from wear and tear, surface scratches or damage from tooth-grinding forces from the opposing arch.*
Elastomeric middle layer: This makes the aligner more flexible and elastic.*
Inner Layer: Fits the teeth securely and gives better control over tooth movements.*
*Reference: zenduradental.com/pages/zendura-flx-properties