KeySplint Soft – Flexible Biocompatible Resin for Nightguards and Splints
Deliver comfort without compromise with KeySplint Soft, a cutting-edge, biocompatible 3D printing resin designed for flexible dental appliances. Ideal for nightguards, bite splints, mouthguards, snoring devices, and repositioners, this medical-grade material combines softness, toughness, and clarity for outstanding intraoral performance.
Engineered for DLP 3D printers (385–405 nm), KeySplint Soft offers superb impact resistance, flexibility, and elongation – all while maintaining long-term shape retention and wear resistance. Its translucent light violet color enhances aesthetics, while low sorption and solubility values ensure a hygienic and durable final product.
Key Features:
- Color: Light Violet, Translucent
- Manufactured by Keystone Industries
- Biocompatible and FDA-cleared
- Flexible and impact-resistant (45–48 J/m)
- Over 110% elongation at break for lasting comfort
- Resistant to sorption, solubility, and wear
Whether you’re printing nightguards or custom-fit bite appliances, KeySplint Soft delivers the comfort patients demand and the reliability professionals require.
| Property | Standard | Value |
| Flexural Strength | ASTM D790 | 44–47 MPa |
| Flexural Modulus | ASTM D790 | 1,100–1,400 MPa |
| Elongation at Break | ASTM D638 | >110% |
| Shore D Hardness | ASTM D2240 | 80–85 |
| Impact Resistance (Notched) | ASTM D256 | 45–48 J/m |
| Ultimate Flexural Strength | ISO 20795-2 | 2.6–4.4 MPa |
| Flexural Modulus | ISO 20795-2 | 135–200 MPa |
| Sorption | ISO 20795-2 | < 18 µg/mm³ |
| Solubility | ISO 20795-2 | < 4.8 µg/mm³ |
| Free Monomer Extraction | ISO 20795-2 | < 2.2% (PASS) |
| Biocompatibility (Cytotox, etc) | ISO 10993 | PASS |
