In stock
- 1 kg sealed bottle Genuine KeyPrint KeySplint Soft in your chosen shade.
- Validated settings Nexa3D XiP print + post-cure profile and lot documentation.
Nexa3D KeySplint Soft Resin 1kg For XiP
Flexible. Cleared. Comfortable in the mouth. KeySplint Soft prints resilient nightguards, bite planes, splints and repositioners on the Nexa3D XiP desktop printer — FDA 510(k)-cleared and Class IIa biocompatible, with 110% elongation at break so appliances absorb clenching load instead of cracking. Polishes to a clear, patient-ready finish.
Choose your shade: Light Violet or Translucent. 1 kg bottle tuned for XiP, validated print and post-cure profile included.
$474
What your dental lab actually checks
Cleared, resilient, repeatable
KeySplint Soft is FDA 510(k)-cleared and CE Class IIa, with 110% elongation at break and Shore D 80 for comfortable, crack-resistant nightguards. Validated XiP exposure and post-cure profiles ship with the resin, so arches print the same run to run.
A dental materials engineer on the line
Questions on shade, exposure or post-cure for your XiP? Our engineers run these KeyPrint workflows in-house — sub-4h reply, NDA standard.
KeySplint Soft is a flexible, FDA-cleared occlusal-splint resin for printing resilient nightguards, bite planes, and repositioners on the Nexa3D XiP desktop printer. Class IIa biocompatible, easy to polish to a clear finish, and comfortable against soft tissue — supplied in a 1 kg bottle tuned for XiP.
Why dental labs choose KeySplint Soft
A resilient occlusal material validated for the appliances your lab prints every week.
Comfort under clenching load
A resilient, flexible finish (110% elongation at break, Shore D 80) absorbs bite force, so nightguards seat comfortably and resist cracking in service.
Cleared for the mouth
FDA 510(k)-cleared, Health Canada listed and CE-marked (Class IIa). ISO 10993 cytotoxicity, irritation and sensitization all pass; free monomer <2.2%.
Fast to finish
Polishes to a clear, glossy surface and is easily cleaned. Low water sorption (<18 μg/mm³) and solubility (<4.8 μg/mm³) keep appliances stable in the mouth.
Two clinical shades
Choose Light Violet or Translucent to match your lab workflow and patient preference — the same validated print and cure profile applies to both.
From file to finished splint
Validated print and cure profiles ship with the resin — no parameter guesswork.
Print on XiP
Run KeySplint Soft on your Nexa3D XiP (LSPc, 385–405 nm) using the resin’s validated exposure profile for repeatable arches.
Wash
Wash printed appliances in IPA, then air-dry. Inspect for full clearance around occlusal contacts before curing.
Post-cure & polish
Final-cure under a 250–390 nm unit to full biocompatibility, then trim and polish to a clear, patient-ready finish.
Physical & mechanical properties
| Property | Standard | Value |
|---|---|---|
| Elongation at break | ASTM D638 | 110% |
| Flexural modulus | ASTM D790 | 1100 MPa |
| Flexural strength | ASTM D790 | 44 MPa |
| Shore hardness (0s, 3s) D scale | ASTM D2240 | 80 |
| HDT @ 0.45 MPa | ASTM D648 | 32 °C |
| Water sorption | ISO 20795-2 | <18 μg/mm³ |
| Solubility | ISO 20795-2 | <4.8 μg/mm³ |
| Free monomer extraction | — | <2.2% |
| Cytotoxicity / irritation / sensitization | ISO 10993 | Pass |
Values from the Keystone KeySplint Soft technical data sheet. Printed-part properties depend on correct exposure and post-cure.
Typical applications
Indicated for orthodontic and dental appliances that flex with the patient.
Not sure KeySplint Soft is the right resin?
Compare the KeyPrint dental family for XiP — same validated workflow, different indication.
SurgicalKeyGuideCompare resin →
ModelsKeyModel UltraCompare resin →
Why source KeySplint Soft through Additive Plus
- Genuine Keystone KeyPrint resin, tuned to Nexa3D XiP print and cure profiles — not a re-labeled substitute.
- In-stock at our US facility; ships in 1–2 business days with lot documentation.
- Application engineers who run these dental workflows in-house — shade, exposure and post-cure support, sub-4h reply.
- Volume pricing and official purchase orders handled for multi-bottle and lab-group orders.
| Brand | Nexa3D |
| Available colors | Light Violet, Translucent |
| Weight | 1 kg |
| Country of origin | USA |
| Printing Materials | Resins |
| Platform | XiP |
| Technology | LSPc, DLP, XiP |
| Resin Type | Dental, Flexible |
| Application | Dental, Engineering, Medical |
Tell us your monthly arch count and printer fleet — we'll set up standing lot supply, volume pricing and PO terms so you never run dry mid-case.
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In stock
· Ships in 1–2 business daysCommon questions
Don't see yours? Email [email protected] — NDA standard, typical reply within 4 hours.
Which printer is KeySplint Soft for XiP compatible with?
Is KeySplint Soft biocompatible and FDA-cleared?
What appliances can I make with KeySplint Soft?
What colors does KeySplint Soft come in?
How do I wash and post-cure KeySplint Soft?
How should I store the resin and what is its shelf life?
Can I order a trial bottle or volume/PO pricing?
Place your order, or talk to an engineer first
Order Nexa3D KeySplint Soft Resin 1kg For XiP direct, or talk to materials engineer