In stock

What you get

1 kg sealed bottle Genuine KeyPrint KeySplint Hard in your chosen shade.
Validated settings Nexa3D XiP print + post-cure profile and lot documentation.

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

Nexa3D KeySplint Hard Resin 1kg For XiP

Rigid. Cleared. Stain- and abrasion-resistant. KeySplint Hard prints hard occlusal splints on the Nexa3D XiP desktop printer for bruxism therapy and cases where tooth immobilization is the priority — FDA 510(k)-cleared and Class IIa biocompatible, with a 1500 MPa flexural modulus that holds form under heavy clenching load.

Choose your shade: Light Violet, Translucent or Translucent Clear. 1 kg bottle tuned for XiP, validated print and post-cure profile included.

$484

Available colors

Light Violet Translucent Translucent Clear

Technology

LSPc DLP XiP

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

1500 MPa flexural modulus

3 shades rigid, stain-resistant

1–2 days ships from US stock

What your dental lab actually checks

Rigid, cleared, repeatable

KeySplint Hard is FDA 510(k)-cleared and CE Class IIa, with flexural modulus 1500 MPa and Shore D 80 for hard splints that hold their shape. It is stain- and abrasion-resistant, and validated XiP exposure and post-cure profiles ship with the resin so parts print the same run to run.

A dental materials engineer on the line

Not sure whether Hard or Soft fits the case? Our engineers run these KeyPrint workflows in-house and will confirm the right resin, shade and cure — sub-4h reply, NDA standard.

About this product

KeySplint Hard is a rigid, FDA-cleared occlusal-splint resin for printing durable, stain- and abrasion-resistant hard splints on the Nexa3D XiP desktop printer. Class IIa biocompatible — for cases where bruxism therapy or tooth immobilization calls for a rigid device. Supplied in a 1 kg bottle tuned for XiP.

Why dental labs choose KeySplint Hard

A rigid occlusal material for hard splints that must hold their shape.

Rigid and durable

Flexural modulus 1500 MPa, flexural strength >50 MPa and Shore D 80 hold form under heavy bruxism load and resist deformation over months of wear.

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%.

Stain & abrasion resistant

Prints with high detail and precision, then polishes to a clear, hard surface that stays bright and resists wear in service.

Three clinical shades

Choose Light Violet, Translucent or Translucent Clear — the same validated print and cure profile applies to all three.

From file to finished splint

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

Step 01

Print on XiP

Run KeySplint Hard on your Nexa3D XiP (LSPc, 385–405 nm) using the resin’s validated XiP exposure profile for repeatable hard splints.

Step 02

Wash

Wash printed appliances in IPA, then air-dry. Inspect occlusal contacts and fit before curing.

Step 03

Post-cure & polish

Final-cure under a 250–390 nm unit to full biocompatibility and strength, then trim and polish to a clear, patient-ready finish.

Physical & mechanical properties

Property	Standard	Value
Flexural modulus	ASTM D790	1500 MPa
Flexural strength	ASTM D790	>50 MPa
Shore hardness (0s, 3s) D scale	ASTM D2240	80
HDT @ 0.45 MPa	ASTM D648	32 °C
Water sorption	ISO 20795-2	<32 μg/mm³
Solubility	ISO 20795-2	<5 μg/mm³
Free monomer extraction	—	<2.2%
Cytotoxicity / irritation / sensitization	ISO 10993	Pass

Values from the Keystone KeySplint Hard technical data sheet. Printed-part properties depend on correct exposure and post-cure.

Typical applications

Indicated for rigid orthodontic and dental appliances.

Hard occlusal splints

Rigid stabilization

Bruxism therapy

Heavy-clench cases

Tooth immobilization

Stabilizing splints

Deprogrammers

Anterior bite devices

Michigan splints

Full-arch stabilization

Retention devices

Rigid retainers

Rigid or flexible? Compare the family

Same validated KeyPrint workflow for XiP — pick the material by indication.

Need flexibleKeySplint SoftResilient nightguards and comfortable bite planes.Compare resin →
SurgicalKeyGuideStiff, autoclavable Class I resin for implant guides.Compare resin →
ModelsKeyModel UltraFast, accurate dental model resin for the XiP.Compare resin →

Not sure whether Hard or Soft fits the case? Tell us the indication and printer — a dental materials engineer will confirm the right resin, shade and cure profile before you order. Sub-4h reply, NDA standard.

Why source KeySplint Hard 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, Translucent Clear
Weight	1 kg
Country of origin	USA
Printing Materials	Resins
Platform	XiP
Technology	LSPc, DLP, XiP
Resin Type	Dental
Application	Dental, Manufacturing, Medical

Common questions

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

Which printer is KeySplint Hard for XiP compatible with?

KeySplint Hard for XiP is formulated for the Nexa3D XiP desktop printer (LSPc, 385–405 nm) and prints with Nexa3D's validated XiP exposure profile. This 1 kg bottle is the XiP version; a separate NX/NXE-tuned bottle is available for NXE-series printers. If you're unsure which version matches your machine, our dental materials engineer will confirm before you order.

How is KeySplint Hard different from KeySplint Soft?

KeySplint Hard is a rigid splint material (flexural modulus 1500 MPa, flexural strength >50 MPa) for cases needing a hard, non-flexing device — bruxism therapy and tooth immobilization. KeySplint Soft is flexible and resilient (110% elongation) for comfortable nightguards. Both are Class IIa biocompatible and share the same validated print and cure workflow.

Is KeySplint Hard biocompatible and FDA-cleared?

Yes. KeySplint Hard 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 colors does KeySplint Hard come in?

KeySplint Hard is available in Light Violet, Translucent and Translucent Clear. All three 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 Hard?

After printing on your Nexa3D XiP, 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 rigidity and biocompatibility, so follow the Keystone KeySplint Hard 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 Hard in its original sealed bottle away from light and heat, at room temperature, and re-seal after each pour to prevent premature curing. 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.

Can I order a trial bottle or volume/PO pricing?

Yes. Order a single 1 kg bottle to qualify KeySplint Hard in your workflow. For multi-bottle standing 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 Hard Resin 1kg For XiP direct, or talk to materials engineer

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