keysplint soft

  • Fully biocompatible 
  • 510K Cleared 
  • Health Canada Approved 
  • CE Marked (Class IIa) 
  • Excellent wear resistance 
  • Easy to clean & polish 

Potential applications:

  • Dental splints
  • Night guards
  • Bleaching trays
  • Orthodontic devices 


Material Description

KeySplint Soft®, developed by KeyPrint, is a biocompatible, strong, and flexible 3D printing photopolymer resin compatible with Stratasys Origin One Dental 3D printers. KeySplint Soft® is ideal for creating, mouthguards, nightguards, bite planes, snoring appliances, splints, repositioners and bleaching trays. KeySplint Soft has an excellent shelf life of three years and color stability. This material has proven to be highly durable and an effective solution for long term solutions where strength, flexibility, wear and/or stain resistance are required. Material pre & post processing guides are available.  

Color options for KeySplint Soft is clear. 




Light Violet, Translucent


1.0-1.1 g/cm 3


600-800 cP


Behavior and Use:


Hardness of LOCTITE® 3D MED413

shore D hardness

80 D

Elongation at Break of LOCTITE® 3D MED413

elongation at break


Water Sorption of KeySplint Soft 3D Printing Material

Water Sorption 

< 18 μg/mm3 

Tensile Yield Strength of LOCTITE® 3D MED413


45 MPa

Tensile Modulus of LOCTITE® 3D MED413

tensile modulus

1250 MPa

IZOD Impact of LOCTITE® 3D MED413

izod impact (notched)

47 J/m

Case Studies and data sheets

Finishing and Polishing Guide for KeySplint Soft Origin One Dental Material

This guide offers finishing and polishing recommendations for KeySplint Soft 3D printing material compatible with Stratasys Origin One Dental 3D printers. This guide includes step by step instructions for obtaining a high-shine or high-polish look for dental models, bleach trays, and night guards.  


KeySplint Soft Cleaning and Care Guide

Keystone Industries recommends cleaning your appliance daily before and after every use. Immediately after removal, use warm water (not to exceed 45°C/113°F) and soap to remove remaining saliva and debris from the device. For periodic removal of debris and maintenance, you can use any mild over-the-counter cleaning agents designed for oral devices.


KeySplint Soft Wear Study

A major concern in clinical practice is the wear resistance of resin materials used in dental materials. One clinical aspect of longevity for occlusal splint materials is the ability to resist masticatory forces and the resultant wear on the material. Two distinct kinds of wear have been described by Kawai & Leinfelder. One of these is wear initiated by generalized conditions and the other is wear generated under localized conditions.


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