3Dresyn OD-Clear TF ULTP Foldable Aligner Resin

3Dresyn® OD-Clear TF ULTP is an advanced photopolymer engineered for orthodontic aligner fabrication workflows requiring ultra-low viscosity and reduced peel forces.

The formulation is based on 4D Shape Memory Polymer (SMP) technology, enabling thermal shape recovery and controlled mechanical response depending on geometry and processing conditions.

It is specifically optimized for Ultra Low Temperature Printing (ULTP), improving process stability, flow behaviour and printing reliability across a wide range of SLA, DLP and LCD systems.

Intended for professional use in vat photopolymerization (SLA, DLP and LCD) additive manufacturing for dental laboratory workflows.

Final suitability of printed parts must be validated by the user according to the specific application, processing conditions and applicable regulatory requirements.

• Orthodontic aligners and teeth movement systems
• Indirect Bonding Trays (IBTs)
• Thin flexible dental copings
• Custom dental appliances requiring controlled flexibility

• Tensile strength: <30 MPa (ISO 527-1 / ISO 527-2)
• Flexural strength: <30 MPa (ISO 178 / ISO 20795-2)
• Young’s modulus: ~500–1000 MPa (ISO 527-1 / ISO 527-2)
• Elongation at break: <30% (ISO 527-1 / ISO 527-2)
• Impact resistance (Notched Izod): <70 J/m (ISO 180)
• Stress relaxation: <10% after 1 week at 2–20 MPa (internal method)
• Shore hardness: D60–70 (ISO 868)

• Density: 0.90–1.20 g/cm³, depending on formulation and, where applicable, selected version (ISO 1675)
• Water sorption (ULWA): ≤32 µg/mm³ (ISO 20795-2)
• Water solubility: ≤1.6 µg/mm³ (ISO 20795-2)
• Residual monomer: <0.1% when properly cured and post-processed (ISO 20795-2)
• Printing shrinkage: no measurable dimensional shrinkage after calibration under validated processing conditions
• Resolution capability: up to 20 µm
• Viscosity of HV version: >1000 mPas at 23°C ± 2°C (ISO 3219)
• Ultra-low viscosity enabling stable printing without heating
• Ultra-low viscosity enables printing without heating and improves resin flow
• Tack behaviour: ultra-low tack with reduced peel/separation forces

• Optical behaviour: excellent clarity and non-yellowing

• Reduced peel forces for improved print reliability
• Shape memory behaviour for advanced aligner performance
• Controlled balance of flexibility, stiffness and dimensional stability
• High optical clarity for transparent appliances
• Shape memory activation via thermal stimulus
• Optimized for ULTP processing: 10–20 °C and above

• Disclaimer for printing aligners
• Benefits of our 3D printed aligners
• Recommendations for printing aligners
• About certification of biomedical devices and food packaging

3Dresyns materials for aligner workflows are based on advanced polymer architectures designed to support more sustainable alternatives to conventional thermoforming disks.

• Printing technologies: SLA, DLP and LCD
• Wavelength range: 385–405 nm
• Compatible with open-parameter vat photopolymerization systems
• Reduced peel forces lower mechanical stress on parts and printers
• Excellent vertical printability without supports (geometry dependent)
• Suitable for thin structures down to 0.2–0.3 mm
• Rigid version: comparable to PETG thermoforming disks (0.5–0.8 mm)
• Flexible version: comparable to TPU disks (0.6–0.9 mm)
• IFU for 100% clarity & transparency
• Follow 3Dresyns IFU for exposure, washing and post-curing

• Organo-tin free formulation
• Ultra low water absorption (ULWA)

• Biocompatibility-related testing may be performed under controlled laboratory conditions depending on formulation and validated workflow
• Evaluation frameworks may include ISO 20795 and ISO 10993 methodologies
• Manufacturing aligned with ISO 13485 quality management systems
• Final biological performance depends on validated processing workflow

Material properties are measured on printed and post-processed specimens and may vary depending on material version, printer type, printing parameters, build orientation, post-curing conditions and workflow validation. Reported values are indicative and provided for reference only.

This material is supplied as a professional manufacturing material for dental laboratory workflows and is not marketed as a finished medical device. The regulatory classification, conformity assessment and validation of any final orthodontic appliance manufactured using this material remain the sole responsibility of the legal manufacturer in accordance with applicable regulations, including Regulation (EU) 2017/745.

This technical datasheet should be used together with the relevant processing, calibration, safety and workflow documentation available in the 3Dresyns® Resources section.

Access the 3Dresyns® Technical Resources (IFU, calibration, CRT, post-processing and troubleshooting)