CROWNTEC (Saremco) for NextDent — 3D Dental Resin – 500 g

SAREMCO print CROWNTEC photopolymerizable resin for 3D dental restorations with high biocompatibility; formulated for permanent crowns, inlays/onlays, veneers, artificial teeth, and temporaries, valid for DLP/LCD systems at 385–405 nm.

SAREMCO print CROWNTEC is a liquid resin based on methacrylic esters, designed for 3D printing of both permanent and temporary dental restorations. The material is single-phase, of medium viscosity, and ensures aesthetics conforming to VITA® standards (A1, A2, A3, B1, and SW/bleach), with opacity specially calibrated for highly aesthetic restorations.saremco+1
Crowntec offers high mechanical strength and dimensional stability after post-curing: elastic modulus > 4000 MPa, Barcol hardness > 40, and typical flexural strength > 130 MPa (declared and measured values according to DIN EN ISO 4049). The product is classified as a Class IIa medical device in Europe and Class II in the USA, and is supplied in 500 g bottles.

Areas of Use and Indications

• Production of definitive crowns (anterior and posterior), inlays, onlays, and veneers.
• Production of temporary crowns and bridges, temporary inlays/onlays, and veneers.
• Fabrication of artificial teeth for insertion into denture bases.

Contraindications and Usage Limitations

• Not indicated for Maryland bridges or inlay-bridges, for cantilever bridges, or in patients with bruxism; do not use for more than one pontic per fixed bridge.
• Do not use in case of known allergy to ingredients (contains methacrylates; risk of sensitization).

Printer and Light Compatibility
Approved and validated for numerous DLP/LCD systems at 385 or 405 nm, including NextDent 5100, Asiga MAX UV & PRO 4K, Rapid Shape D20/D30/D40/D10/D20+/D30+/D50+, SprintRay K55/K95, Phrozen Sonic 4K/XL 4K, Accuretta Sol & Dentic. Printing must be performed with parameters and profiles recommended by the printer and software manufacturer (recommended slice 50 µm unless otherwise indicated for some models).

Printing and Post-processing Instructions (Summary)

• Shake the bottle briefly, filter if necessary (190 µm), and pour into the vat; set the CROWNTEC profile/material file in the printer software. Avoid contamination of the reservoir.
• Recommended layer thickness: 50 µm (some Ackuretta models: 70 µm). Optimal orientation: occlusal towards the platform/build platform (0° tilt recommended). Maintain environmental conditions and temperature required for the specific printer (e.g., Asiga: 35 °C operating).
• Cleaning: remove parts from the platform, remove residues with alcohol (96%), dry with an air syringe; wear nitrile gloves and protective eyewear during all stages until post-curing.
• Post-curing: mandatory for mechanical properties and biocompatibility; times and protocols depend on the unit (e.g., Otoflash G171: 2 x 2000 flashes with rotation; Signum HiLite: 2 x 180 s; NextDent LC-3DPrintbox: 30 min), always follow the instructions of the post-curing unit. Post-curing reduces residual monomers and optimizes final properties.

Finishing and Cementation

• Grind/trim with diamond burs (40 μ and 12 μ), polish with discs/pastes or silicone polishers to desired gloss; use suction and cooling during polishing.
• Definitive bonding: micro-sandblast (Al2O3 110 μm) the internal surface, then cement with recommended adhesive composite cements (e.g., Panavia V5, Variolink); phosphate or glass-ionomer cements have limited advantages due to opacity. For temporaries, use commercial temporary cements.

Safety, Storage, and Warnings

• For dental laboratory/dental use only; avoid contact with skin and eyes with unpolymerized material; use nitrile gloves (common medical gloves may not protect against methacrylates). In case of contact: rinse with water and consult a doctor if necessary.
• Storage: store away from light and heat sources, recommended temperature 4–28 °C; close container after use. Do not mix different batches. Shelf life: 3–4 years depending on the document (TDS/IFU) — check expiration date on the bottle.
• Danger: contains ethoxylated Bisphenol A dimethacrylate; may cause skin/eye irritation and sensitization. Follow the P-statements indicated in IFU and SDS.

Practical Use Example
Rapid printing of a permanent monolithic crown: import STL, set CROWNTEC profile in 3D Sprint/Composer/Rayware, slice 50 µm, occlusal-towards-platform orientation, generate supports on the occlusal, print → wash with 96% alcohol → dry → remove supports → post-curing according to unit (e.g., 2 x 180 s Signum) → sandblast internal and cement with recommended adhesive composite.

Table: Technical Specifications 

Legal notes and documentation
All technical data is taken from the Saremco Technical Data Sheet / IFU and official manufacturer documents; for detailed printing protocols, parameters, and certifications, please consult the official IFU and SDS provided by Saremco. Clinical indications and patient use require the professional responsibility of the operator according to IFU.