ENGINEERED FOR ENDURANCE, BUILT FOR STRENGTH.#
TRANSFORMING SMILES WITH SCIENCE.#
Retainers are worn for extended periods — often overnight or full-time — and their primary job is to maintain tooth position without active force application.
Zendura A is engineered with special grade polyurethane that helps with:
- Dimensional Stability
- Durability
- Crack Resistance
- Transparency
- Stain Resistance
IMPACT STRENGTH#
Impact strength is the ability of a material to absorb energy without fracturing. Zendura A demonstrates high impact strength compared to other materials when tested at ambient temperature.
Impact Strength (J/mm)#
- Zendura A: 24.11
- Taglus Tuff: 16.34
- Tru-Tain DX: 8.39
- Invisacryl A: 8.0
- Duran: 7.23
- Essix A+: 4.78
TABER ABRASION#
The Taber abrasion test is a method used to measure a material’s resistance to surface wear and abrasion caused by rubbing, grinding, or repeated friction. It is reflective of materials surface durability, scratch resistance, wear resistance and long term surface integrity.
Weight Loss (mg) | 24h | 25ºC#
- Zendura A: 6.27
- Zendura FLX: 11.43
- Taglus Tuff: 11.73
- Duran: 11.77
- Essix A+: 12.9
A peer-reviewed study found that Zendura A had significantly lower wear depth, than the two other commonly used thermoplastic materials (Essix ACE and Taglus), when moderate nighttime bruxing was simulated, making it “the most wear-resistant among the materials tested” 1.
TENSILE HYSTERESIS#
Tensile hysteresis (TH) is a measure of how efficiently a retainer material returns to its original form after repeated flexing. Lower TH means longer-lasting fit and better retention.
Tensile Hysteresis for Zendura A grows slowly from 16% at 1000 cycles to 23% at 10,000 cycles - indicative of excellent elastic recovery and minimal loss during prolonged cyclical loading.
3% Strain | Thermoformed | 48h | 37C | Water#
- Zendura A: Grows slowly from ~16% to ~23%.
- Essix A+: Broke before reaching 2,000 cycles.
Zendura maintains very low hysteresis over 10,000 cycles.
STAIN RESISTANCE#
Unlike conventional retainer materials, Zendura A maintains its crystal-clear appearance over extended wear period, ensuring a clean and aesthetic look for patients.
24 hours at 37ºC (∆dB)#
| Material | Mustard | Coffee |
|---|---|---|
| Zendura A | 1.34 | 1.05 |
| Zendura FLX | 0.86 | 1.32 |
| Essix A+ | 2.71 | 1.38 |
| Duran | 3.75 | 1.23 |
Product Information#
| SKU | Dimensions | Format | Thermoformer |
|---|---|---|---|
| 9157 | Zendura A 0.76 mm x 125 mm Round | Pouch with 20 | BioStar/ Mini Star/ Drufomat |
| 9192 | Zendura A 0.625 mm x 125 mm Round | Pouch with 10 | BioStar/ Mini Star/ Drufomat |
| 9193 | Zendura A 0.76 mm x 125 mm Round | Pouch with 10 | BioStar/ Mini Star/ Drufomat |
| 9295 | Zendura A 1.02 mm x 125 mm Round | Pouch with 10 | BioStar/ Mini Star/ Drufomat |
| 9156-20 | Zendura A 0.76 mm x 125 mm Round | 20 Singles | BioStar/ Mini Star/ Drufomat |
| 9163-20 | Zendura A 0.76 mm x 120 mm Round | 20 Singles | Erkopress |
| 9164-20 | Zendura A 0.76 mm x 125 mm Square | 20 Singles | BioStar/ Mini Star/ Drufomat |
| 9169-20 | Zendura A 1.02 mm x 125 mm Round | 20 Singles | BioStar/ Mini Star/ Drufomat |
| 9171-20 | Zendura A 1.02 mm x 120 mm Round | 20 Singles | Erkopress |
| 9190-20 | Zendura A 0.625 mm x 125 mm Round | 20 Singles | BioStar/ Mini Star/ Drufomat |
BioStar & MiniStar are registered trademarks of Scheu. Drufomat is registered trademark of Dreve. Erkopress is registered trademark of Erkodent.
Contact Information#
Global HQ:
Bay Materials
48450 Lakeview Blvd. Fremont, CA 94538
+1 650.566.0800
info@zenduradental.com
- North America: orders@baymaterials.com | Tel: +1 650 566 0800
- Europe, Middle-East & Africa: orders-emea@baymaterials.com | Tel: +34 91 662 3435
- LATAM: orders@baymaterials.com | Tel: +1 650 566 0800
- APAC: orders@baymaterials.com | Tel: +1 650 566 0800
Footnotes & Trademarks#
Taglus is a trademark of Laxmi Dental. Essix is a trademark of Dentsply Sirona. Duran is a trademark of Scheu-Dental GMBH. Tru-Tain is a trademark of Tru-Tain. Invisacryl is a trademark of Great Lakes Dental Technologies.
Grünheid, T., & Bitner, T. F. (2023). Wear and fatigue resistance: An in-vitro comparison of three polyethylene terephthalate glycol and thermoplastic polyurethane materials for vacuum-formed retainers. International Orthodontics, 21(2), 100748. doi:10.1016/j.ortho.2023.100748 ↩︎
