Display Nav Left

Language:

Compare

You must be logged in to manage your wishlist.

KeySplint Soft resin

Ref.: KPRINT-KEYSPLINT-SOFT-PURPL-500

265.00 €

Tax excl.

Format

Colour

Quantity

In stock 1 units available for immediate shipping.
units available for shipping in 1 - 3 days Available for shipment within 1 - 3 days

Product temporarily out of stock with these characteristics. Select another combination.

We notify you when it will be available:

Approximate delivery date: Friday 19 December

Returns

Ask about this product

In 2018, KeyStone Industries launched the KeyPrint 3D printing materials line, and since then numerous high-quality KeyPrint dental resins have entered the market. One of these materials is KeySplint Soft resin, designed for 3D printing flexible night guards, mouthguards, splints, repositioners, and whitening trays. It combines the strength needed to protect teeth from conditions such as bruxism with enhanced flexibility for improved patient comfort. It ensures quicker and easier replacement, can be heated in water for easier placement and minor in-office adjustments, and requires only a simple cleaning procedure (see the Care Guide in the downloads section).

Video 1: Introduction to KeySplint Soft resin. Source: KeyPrint.

Like all KeyPrint dental resins, KeySplint Soft is fully biocompatible (cytotoxicity, irritation, and sensitization), offers a guaranteed 3-year shelf life, color stability, and validation for multiple open-source printers thanks to its wide range of compatible wavelengths (385–405 nm). Some examples of compatible resin 3D printers include the UniZ Slash 2 and the Phrozen Sonic XL 4K 2022, and a complete list of validated equipment is available in the downloads section. KeySplint Soft resin contains no BPA, MMA, or phthalates, is FDA-cleared in the U.S. (510K), holds a medical license in Canada, and carries the CE mark (class IIa).

KeySplint Soft resin is available in pink, purple, and clear. In addition, it is also available in clear and translucent colors, compatible with the A2D HD printer from HeyGears. Moreover, each resin includes an RFID card that allows the printer to automatically identify the resin type, ensuring a precise and efficient printing process.

A batch of 3D-printed splints using KeySplint Soft resin

Image 1: A batch of 3D-printed splints using KeySplint Soft resin. Source: KeyPrint.

Just like KeySplint Hard resin, KeySplint Soft is strong and durable enough to withstand damage caused by bruxism, showing excellent resistance to abrasion and fracture. Unlike the Hard version, KeySplint Soft remains flexible with elastic memory, allowing the splint or guard to fit the patient’s teeth comfortably and ensuring long-term wear comfort. A wear study on KeySplint Soft resin can be found in the downloads section.

A splint before and after polishing with the KeyPolish kit

Image 2: A splint before and after polishing with the KeyPolish kit. Source: KeyPrint.

A common practice to improve the surface finish of splints and guards is polishing. The edges and occlusal surfaces of 3D-printed KeySplint Soft splints can be polished using the KeyPolish polishing kit. Polishing the intaglio surface is not recommended, as it may negatively affect the fit of the printed device. A complete polishing guide for this resin can be found in the downloads section, and a tutorial video is available in the usage tips section.

KeyPrint’s KeySplint Soft precision dental resin is the result of more than one hundred years of experience that KeyStone Industries has accumulated in the polymer and dental sectors. KeySplint Soft resin delivers biocompatible and reliable orthodontic devices that help many end users minimize the damaging effects of bruxism and ensure ease of use for both patients and orthodontic specialists thanks to its flexibility and compatibility with many 3D printing and post-processing workflows.

General information
Manufacturer	KeyStone Industries
Material	Photopolymer
Format	0.5 kg / 1 kg
Density	- g/cm³
Technology	DLP/LCD
Wavelength	385 - 405 nm

Printing properties
Layer height	- µm
Layer exposure time	-
Layer off time	-
Bottom layer exposure	-
Bottom layer count	-

Curing and washing properties
Washing time	15 - 30 s / 2 - 3 min
Curing time	- min
Curing temperature	- ºC

Mechanical properties (uncured / cured)
Izod impact strength	- KJ/m²
Charpy impact strength	- KJ/m²
Elongation at break	(ASTM D638) 110 %
Tensile strength	- MPa
Tensile modulus	- MPa
Flexural strength	(ASTM D790) 44 - 47 MPa / (ISO 20795-2) 2.6 - 4.4 MPa
Flexural modulus	(ASTM D790) 1100 - 1400 MPa / (ISO 20795-2) 135 - 200 MPa
Surface hardness	(ASTM D2240) Shore 80 - 85 D

Thermal properties (uncured / cured)
Softening temperature	- ºC

Other
HS Code	2916.1
Lifetime (since manufacturing)	36 M

Before using the resin, the user should thoroughly study the product instructions, as well as the safety and technical datasheets available in the Downloads section. It must be remembered that dedicated accessories (resin tank, build platform, curing station) must be used for the KeySplint Soft resin (Downloads section). The dedicated accessories must not mix with any other resins to ensure the biocompatibility of the parts 3D printed with the KeySplint Soft resin.

The KeySplint Soft resin should always be stored in a cool, dry place (15-30 °C) and away from light, as it may cause curing of the resin and failed prints. In order to ensure successful prints, the bottle should be well shaken 1 hour before use and the resin should be tempered to around 23 ºC. If bubbles are present in the resin, they should be removed with a clean spatula prior to printing. It is a good practice to filter resin that has been in the tank for a while in order to avoid failed prints. Proper personal protective equipment should be worn at all times when handling the KeySplint Soft resin and uncured printed parts to avoid burns and other injuries. Protective gloves and garments as well as face protection should be used.

Video 1: How to wash parts 3D printed with the KeySplint Soft resin. Source: KeyPrint.

Parts 3D printed with the KeySplint Soft resin require washing and curing in order to perform their function. The parts should be washed twice in a clean IPA alcohol (>97% purity) bath just like shown in video 1, and then dried with compressed air. Any residual resin will be highly noticeable and it will not dry under the compressed air. This residue should be removed completely by repeating the bath and drying process. The total IPA alcohol exposure should not exceed 5 minutes as the parts may start to degrade. As far as curing, the recommended curing parameters can be consulted on the manufacturer’s website.

Video 2: How to polish parts 3D printed with the KeySplint Soft resin. Source: KeyPrint.

In order for the orthodontic device 3D printed with the KeySplint Soft resin to have an aesthetically pleasing surface finish, polishing should be done just like shown in video 2. A complete polishing guide can be found in the Downloads section.

In case the 3D printed parts are going to be used as tooth whitening/bleaching trays, additional post-processing steps must be performed. For further instructions please consult the Instructions document in the Downloads section. The finished medical device resulting from following this validated post-processing workflow is safe, biocompatible, and effective for its intended use.