Dental 3Dresyn IJ OD Clear TF has these features and benefits:
- printable with most commercial and professional Inkjet 3D printers
- Stratasys: Objet Eden 260V, 260VS, 333, 350, 350V, 500, 500V, 1000 Plus, J750, Objet Connex 260, 350 and 500 series
- 3D Systems: ProJet MJP 2500, 2500+, 3500, 3510 and 3600 Plastic series
- tough and foldable for teeth aligners without damaging the periodontal ligament, semirigid, pliable under pressure at low thickness, with good memory until regains its original shape
- safe and biocompatible: only mild skin irritant before curing and cleansing
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available in two versions: rigid and flexible versions for printing aligners:
- rigid version: similar properties to PETG disk
- rigid version: ideal for 0.5-0.8 mm
- flexible version: similar properties to TPU disk
- flexible version: ideal for 0.6-0.9 mm
- suitable for printing flexible thin copings or Indirect Bonding Trays IBTs at 0.2-0.3 mm for placing attachments
- Shore hardness D60-70 range
- <10% stress relaxation after 1 week at 2, 10 and 20 MPa initial stress
- excellent clarity and non yellowing
- flexural strength <20 MPa
- elongation <30%
- high impact and shattering resistance (Notched Izod <70 J/m)
- tensile strength <20 MPa
- rigid and flexible versions with medium rigidity (Young modulus <500-1000 MPa)
- rigid version closer to 1000 MPa for thickness <0.6 mm
- flexible version closer to 500 MPa for thickness > 0.6 mm
- durable, non yellowing
- high resolution up to 20 micron
- very low shrinkage
- organo tin free
- inkjet viscosity (<20 mPas at 70ºC and <15 mPas at 80ºC) for excellent inkjet printability
- water solubility: ≤ 1,6 µg/mm3
- hydrophobic, ultra low water sorption ULWA≤ 32 µg/mm3
- residual monomer <0.1%
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fully compliant with the Quality requirements of ISO 20795-1 and ISO 10993-1
Note: direct printing of aligners requires detailed integration of aligners specifications and control of the overall workflow and process variables (software, aligner thickness, resin design, inkjet printer specifications such as, print head temperature, power and wavelength, print settings such as exposure time and z layer thickness, postcuring and cleansing protocols, types of cleaning fluids used, cleaning time and temperature, light anf thermal postcuring temperature, light power and wavelength, etc. All the mentioned variables affect and determine final aligner mechanical properties and biocompatibility: such as its hardness, rigidity, stress relaxation resistance during usage, color, resistance, durabibility and safety. Different printer and printing settings and specifications and cleaning and postcuring settings in practice provide differences in mechanical properties and biocompatibility for any 3D photoreactive resin. These starting point Inkjet 3Dresyns for printing aligners can be taylored to maximise their mechanical properties in inkjet printers working with printing heads over 80-90ºC since improved mechanical properties and durability can be designed with these settings.
