3Dresyn OD-Clear TF ULTP – Tough & Foldable Photopolymer for Professional Orthodontic Laboratory Workflows

Product description

3Dresyn® OD Align 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.

Application framework

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.

Typical applications

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

Measured mechanical properties

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

Measured physical properties

• Tack behaviour: ultra-low tack with reduced peel/separation forces
• Optical behaviour: excellent clarity and non-yellowing
• Water solubility: ≤1.6 µg/mm³ (ISO 20795-1 reference framework)
• Water sorption (ULWA): ≤32 µg/mm³ (ISO 20795-1 reference framework)
• Residual monomer: <0.1% when properly cured and post-processed
• Shrinkage: very low
• Resolution capability: up to 20 µm
• Viscosity of HV version: >1000 mPas at 23°C ± 2°C (ISO 3219)
• Viscosity of LV version: <1000 mPas at 23°C ± 2°C (ISO 3219)

Functional performance characteristics

• Ultra-low viscosity enabling stable printing without heating
• 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

Processing and handling performance

• Printing technologies: SLA, DLP and LCD
• Wavelength range: 385–405 nm
• Compatible with open-parameter vat photopolymerization systems
• Ultra-low viscosity enables printing without heating and improves resin flow
• 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

Chemical and safety characteristics

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

Biocompatibility framework

• 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

Testing & processing disclaimer

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.

Disclaimer

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.

Additional workflow resources

• 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.

Document reference: TDS-OD-ALIGN-ULTP-EN | Version: 2.0 | Last updated: March 2026