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Testing Standards

The typical properties of our made to order 3Dresyns are tested with the following standards:

 Engineering 3D resins testings 

  • Tensile strength ISO 527-2
  • Young´s modulus ISO 527-2
  • % Elongation at yield ISO 527-2
  • Flexural strength ISO 178
  • Shore hardness ISO 868
  • Deflection Temperature HDT@45 ISO 75

Orthodontics and Dental 3D resins testings

  • Ultimate flexural strength ISO 20795-1
  • Flexural modulus ISO 20795-1
  • Sorption  ISO 20795-1
  • Solubility ISO 20795-1
  • Residual monomer ISO 20795-1
  • Biocompatibility: cytotoxicity ISO 10993-1
  • Biocompatibility: mutagenicity ISO 10993-1
  • Biocompatibility: erythema or edema reactions ISO 10993-1
  • Biocompatibility: sensitizer ISO 10993-1
  • Biocompatibility: systemic toxicity ISO 10993-1

Photopolymer 3D resins are  a photoreactive resin systems, which depending on their cure (% conversion from monomer to polymer) under uv and/or visible light during the 3D printing and postcuring process, can have improved or worse mechanical properties and biocompatibility since they can vary significantly from printer to printer since printing, postcuring and post processing conditions (specifications) affect their overall performance. 

Photopolymer 3D resins cannot be considered finished materials, such as conventional plastics or polymers, because their functionality "performance" and biocompatibility depend greatly on the degree of cure and cleansing of any residuals and reaction byproducts, which depend significantly on the printer, postcuring, cleansing and post processing specifications and implemented protocols. Learn more about our Instructions for Use IFU.

Different printers have different specifications, such as light wavelength (365, 385 and the most commonly used 405 nm) and light power across the resin tank, which can range from 0.3 to 50 mW/cm2 or even higher depending on the SLA, DLP or LCD printer. 

Our made to order 3D resins require different dosages of our Fine Tuners for different printers to cure and print them at fast and productive printing times and maximum print definition or detail (resolution).

Due to the mentioned printing specifications variability and required adjustments, our made to order 3Dresyns for different printers may have some viscosity and mechanical properties variability for each particular product reference. This is the reason for not disclosing all the properties specifications as fixed values, such as the viscosity of our 3Dresyns (Rheology of our 3Dresyns) since the Fine Tuners dosages affect the viscosity as well as other properties, such as light fastness (yellowing), biocompatibility and mechanical properties.

3D resins just need to flow to ensure that the resin tank or vat is covered by resin during printing. On the other hand, the typical property values of our 3Dresyns are shown in value ranges or with values above ">" or below "<" certain x units since our published data reflects typical properties which can obtained with different SLA, DLP and LCP printers, postcuring  and postprocessing conditions , such as:

  • low power printers, such as LCD printers, which commonly provide improved resolution and mechanical properties but inferior biocompatibility and light fastness
  • high power printers, such as laser SLA printers (eg Form 2 & 3) and high power DLP printers provide improved biocompatibility and light fastness but often inferior mechanical properties (brittleness)

FYI:

    Contact us to consult about our Services and 3Dresyns at: info@3Dresyns.com