Table of Contents
Meet Zendura Guard#
Designed for Everyday Retention
SMART PERFORMANCE.TRUSTED TECHNOLOGY.
After active orthodontic treatment, retainer becomes the most critical appliance for the patient as it maintains the position of the teeth and prevents relapses. Built on tri-layer architecture, Zendura Guard was engineered to resist deformation and provide 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#
Flexural modulus describes how much a retainer material resists bending under load—in other words, how stiff or flexible it is when forces are applied during insertion, removal, and chewing. For retainers, flexural modulus is important because it directly influences comfort and durability. Materials that are too stiff can be harsh, concentrate stresses and are more prone to cracking.
In laboratory testing under defined conditions, Zendura Guard demonstrated 45% lower stiffness (flexural modulus) than Essix A+, a comparable commercially available retainer material—suggestive of a material that is more stress-absorbing with a softer feel.*
Flexural Modulus (MPa)#
| Sample | Zendura Guard | Essix A+ |
|---|---|---|
| #1 | 1233 | 2370 |
| #2 | 1373 | 2453 |
| #3 | 1246 | 2373 |
| #4 | 1389 | 2399 |
| #5 | 1254 | 2595 |
| #6 | 1267 | 2324 |
| #7 | 1244 | 2234 |
| #8 | 1379 | 2247 |
| #9 | 1325 | 2459 |
| #10 | 1412 | 2554 |
TEAR STRENGTH#
Tear Strength measures a material’s resistance to the propagation of a crack once damage begins. For retainers, this property is critical because small defects—such as trimmed edges, notches, or stress points—can quickly turn into full fractures during daily insertion, removal, or chewing. Materials with low tear strength are more likely to crack even under normal use.
In laboratory testing, Zendura Guard demonstrated more than 2× the tear strength of Essix A+ under defined test conditions.*
Tear Strength (N/mm)#
| Sample | Zendura Guard | Essix A+ |
|---|---|---|
| #1 | 168 | 67 |
| #2 | 173 | 81 |
| #3 | 124 | 81 |
| #4 | 212 | 75 |
| #5 | 106 | 70 |
| #6 | 233 | 83 |
| #7 | 195 | 71 |
| #8 | 207 | 79 |
| #9 | 189 | 79 |
| #10 | 194 | 79 |
Product Information#
| SKU | Dimensions | Format | Thermoformer |
|---|---|---|---|
| 6447 | Zendura Guard 0.89 mm x 120 mm Circle | Pouch with 20 | Erkodent |
| 6547 | Zendura Guard 0.89 mm x 125 mm Circle | Pouch with 20 | BioStar/ Mini Star/ Drufomat |
| 6442 | Zendura Guard 0.89 mm x 120 mm Circle | 20 Singles | Erkodent |
| 6542 | Zendura Guard 0.89 mm x 125 mm Circle | 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#
* Material-performance claims presented on this website are based on comparative mechanical bench testing of Zendura materials against comparable commercially available products. Testing was conducted under defined conditions. The underlying datasets and supporting technical documentation are maintained on file by Bay Materials and are available upon reasonable request, subject to applicable confidentiality restrictions. These claims do not relate to clinical outcomes.
Essix is a trademark of Dentsply Sirona.
