In stock

What you get

5 kg sealed bottle Genuine KeyPrint KeySplint Soft in your chosen shade.
Validated settings Nexa3D LSPc print + post-cure profile and lot documentation.

Materials, Dental, DLP 3D Printing Materials, Engineering, Medical, Resin 3D Printing Materials · LSPc, DLP, XiP

Nexa3D KeySplint Soft Resin 5kg For NX

Name: Nexa3D KeySplint Soft Resin 5kg For NX
SKU: 50524_01
Price: 2291 USD
Availability: InStock

Flexible. Cleared. Bought by the bottle, not the gram. KeySplint Soft prints resilient nightguards, bite planes and repositioners on Nexa3D NXE-series LSPc printers — FDA 510(k)-cleared and Class IIa biocompatible, with 110% elongation at break. This is the 5 kg bulk format for labs printing splints every week.

Choose your shade: Light Violet or Translucent. 5 kg bottle, validated print and post-cure profile included.

$2,291

Prices follow supplier cost and stock availability and are updated regularly. The price you see is today's price — once you order, it's held for 7 days.

NDA standard Ships in 1–2 business days

Class IIa FDA 510(k) cleared

110% elongation at break

5 kg bulk — lower $/gram

1–2 days ships from US stock

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 exposure and post-cure profiles ship with the resin, so arches print the same run to run — at 5 kg you get the same material at a lower cost per gram.

A dental materials engineer on the line

Questions on shade, exposure or post-cure for your printer? Our engineers run these KeyPrint workflows in-house — sub-4h reply, NDA standard.

About this product

KeySplint Soft is a flexible, FDA-cleared occlusal-splint resin for printing resilient nightguards, bite planes, and repositioners on Nexa3D LSPc printers. This is the 5 kg bulk bottle for the NXE 400 / NXE 400 Pro — the same Class IIa biocompatible material at a lower cost per gram for high-volume labs.

Nexa3D KeySplint Soft dental resin – 3D printed clear occlusal splint for night guards — Occlusal splint printed in KeySplint Soft — flexible and clear after post-cure.

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.

Lower cost per gram

The 5 kg format cuts cost per arch versus 1 kg bottles — sized for labs printing splints in volume every week.

From file to finished splint

Validated print and cure profiles ship with the resin — no parameter guesswork.

Step 01

Print on LSPc

Run KeySplint Soft on your Nexa3D NXE-series printer (LSPc, 385–405 nm) using the resin’s validated exposure profile for repeatable arches.

Step 02

Wash

Wash printed appliances in IPA, then air-dry. Inspect for full clearance around occlusal contacts before curing.

Step 03

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.

Nightguards

Resilient bruxism protection

Bite planes

Occlusal stabilization

Occlusal splints

TMJ / bruxism therapy

Mouthguards

Sport and protective

Snoring appliances

Mandibular repositioners

Repositioners

Orthodontic retention

Not sure KeySplint Soft is the right resin?

Compare the KeyPrint dental family — same validated workflow, different indication.

Smaller sizeKeySplint Soft 1 kgSame resin in a 1 kg bottle for lower-volume labs.View 1 kg →
Need rigidKeySplint HardRigid splints for bruxism and tooth immobilization.Compare resin →
SurgicalKeyGuideStiff, autoclavable Class I resin for implant guides.Compare resin →

Buying KeySplint Soft by the 5 kg for a busy lab? A dental materials engineer will confirm shade, exposure profile and post-cure, and set up standing lot supply so you never run dry mid-case. Sub-4h reply, NDA standard.

Why source KeySplint Soft through Additive Plus

Genuine Keystone KeyPrint resin, matched to Nexa3D LSPc 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	5 kg
Country of origin	USA
Printing Materials	Resins
Platform	NX
Technology	LSPc, DLP, XiP
Resin Type	Dental, Flexible
Application	Dental, Engineering, Medical

Common questions

Don't see yours? Email [email protected] — NDA standard, typical reply within 4 hours.

Which printers is this 5 kg KeySplint Soft for NX compatible with?

This 5 kg bulk bottle of KeySplint Soft is the NX/NXE version, formulated for Nexa3D NXE-series LSPc printers using UV wavelengths of 385–405 nm with Nexa3D's validated exposure profile. A 1 kg bottle and a separate XiP-tuned version are also available. If you're unsure which matches your machine, our dental materials engineer will confirm before you order.

Is KeySplint Soft biocompatible and FDA-cleared?

Yes. KeySplint Soft is an FDA 510(k)-cleared Class IIa medical device, Health Canada listed and CE-marked. It passes ISO 10993 cytotoxicity, irritation and sensitization testing, with free-monomer extraction below 2.2%. Correct wash and post-cure are required to reach full biocompatibility — follow the Keystone protocol supplied with the resin.

What appliances can I make with KeySplint Soft?

KeySplint Soft is indicated for flexible orthodontic and dental appliances: nightguards, bite planes, occlusal splints, mouthguards, snoring appliances and repositioners. Its resilient finish (110% elongation, Shore D 80) suits bruxism protection where the patient needs a comfortable, shock-absorbing device rather than a rigid one.

What colors does KeySplint Soft come in?

KeySplint Soft is available in Light Violet and Translucent. Both shades share the same validated print and post-cure profile and the same mechanical and biocompatibility properties — the choice is cosmetic and workflow preference. Select your shade at checkout.

How do I wash and post-cure KeySplint Soft?

After printing on your Nexa3D LSPc printer, wash the appliance in IPA and air-dry, then final-cure in a post-cure unit using 250–390 nm UV. Proper post-cure develops full mechanical strength and biocompatibility, so follow the Keystone KeySplint Soft time and temperature guidance rather than under-curing to save time.

How should I store the resin and what is its shelf life?

Store KeySplint Soft in its original sealed bottle away from light and heat, at room temperature, and re-seal after each pour to prevent premature curing. The 5 kg format is ideal for labs that will use it steadily; refer to the bottle label and Keystone data sheet for the exact expiration date. We rotate stock so you receive bottles with usable shelf life.

Is 5 kg the most economical option, and can I get PO pricing?

For labs printing splints in volume, the 5 kg bottle lowers cost per gram versus buying 1 kg bottles. For standing multi-bottle orders or an official purchase order, use the volume-quote button and our team will set up pricing and lot supply for your lab or DSO group.

Place your order, or talk to an engineer first

Order Nexa3D KeySplint Soft Resin 5kg For NX direct, or talk to materials engineer

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