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KeyTray resin

Ref.: KPRINT-KEYTRAY-1000

244.40 €

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Approximate delivery date: Thursday 15 May - Monday 19 May

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The KeyTray precision dental resin from the KeyPrint line by KeyStone Industries is a light curing resin for the 3d printing of customized impression trays. It is indicated for intraoral use, biocompatible (class I) and BPA, MMA and phthalate free. More detailed safety data for this resin can be found in the Safety Datasheet in the Downloads Section.

A tray 3D printed with the KeyTray resin

Image 1: A tray 3D printed with the KeyTray resin. Source: KeyPrint.

KeyTray is strong and durable, intended to make dental trays capable of withstanding the forces of taking a patient impression and removing the tray from the oral cavity. The KeyTray resin is compatible with all types of impression material, making compound waxes and border molding materials adhere to the tray with no problem at all.

A traditional stone model

Image 2: A traditional stone model. Source: KeyPrint.

Like all KeyPrint resins, the KeyTray resin can be 3D printed on many resin 3D printers validated by KeyStone Industries. An example of a compatible 3D printer would be the Phrozen Sonic XL 4K 2022 3D printer. Some other compatible brands for this particular resin are Flashforge, Stratasys or Shining3D.

The KeyTray resin makes the fitting and impression making process much shorter and easier for both the patient and the orthodontic professional. This is due to the fact that KeyTray eliminates the need for preliminary casting or for making stone models, which also contributes to improved impression accuracy.

General information
Manufacturer	KeyStone Industries
Material	Photopolymer
Format	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) 26.4 %
Tensile strength	(ASTM D638) 62.1 MPa
Tensile modulus	(ASTM D638) 2056 MPa
Flexural strength	(ASTM D790) 84.7 MPa
Flexural modulus	(ASTM D790) 1913 MPa
Surface hardness	Shore 86.5 D

Thermal properties (uncured / cured)
Softening temperature	- ºC

Other
HS Code	2916.1
Lifetime (since manufacturing)	36 M

There are certain steps that need to be taken before use. The resin should be tempered to ambient temperature (20-25°C) prior to printing. The bottle should be shaken 1 hour prior to use in order to achieve consistency of the resin and to prevent bubbles. If bubbles are still present, they should be removed with a clean spatula. The KeyPrint resin should only be used in accordance with the product-specific predetermined settings for the user’s DLP 3D printer with a 385-405 nm UV light source. Any other equipment requires validation by the manufacturer.

Video 1: How to wash parts 3D printed with the KeyPrint resins. Source: KeyPrint.

The post processing of parts 3D printed with the KeyTray dental resin entails 3 easy steps.

The part should be cleaned with IPA alcohol (at least 97%) just like shown in video 1 and then dried with compressed air. Residual resin (visibly glossy) should be removed by repeating the washing and drying. The manufacturer highly discourages the use of denatured alcohol or ethanol for cleaning as it may diminish or degrade the quality of the finished parts.
The part should be placed in a curing machine (flat to prevent warping). The validated cure box settings can be consulted on the manufacturer’s website. Before the part is removed from the curing machine, it should be allowed to cool completely to prevent surface defects or warping.
Final processing such as polishing can be done now with the help of the KeyPolish kit. KeyPrint shows how to polish parts 3D printed with their resins in this video.

More information about the KeyTray resin can be found in the Downloads section. The KeyPrint KeyTray resin should be stored in a cool, dry place and away from light. Precautions should be taken at all times to ensure user safety. It is recommended to use protective gloves and garments, and a face screen to prevent burns caused by hot resin.