PRIMERO® know-how transfer bid



After Cyrtina produced 45.000 Primero crown-, bridge- and implant-units with her proprietary CAD/CAM system and Primero® porcelain and zirconia, she discontinued her activities, making her comprehensive and complete know-how available for interested parties, as an exclusive worldwide know-how bid, offered by DENTALXS.COM (Dr. Jef van der Zel, t. +31(0)620687031), the primary owner of all intellectual properties. The opening bid for the complete Primero® know-how is:

€ 175.000

The bid has a closure date of 01-01-2021.

This exclusive worldwide Primero® know-how transfer bid includes:


  • Clearly written C++ Builder software sources: CAD, Demo, HelpDesk, Messenger, Server, STL, Update, Upload, MailReader, FloorManager, MailOrder, PathBuilder, PathMill, PathViewer, PCInfo, PCKey, PhotoRenamer, ScanManager, Smallprint, TestDocking, TrayCalender, WorkManager, KeyManager
  • Documentation: Software requirement specifications, software change requests, flow diagrams

Production of PRIMERO® porcelain including recipes and production know-how:

  • Glass frit formulations
  • Milling, screening and mixing procedures
  • Coloring formulations, pigment pre-concentrates
  • Paste formulation and production know-how

Production of recyclable PRIMERO® zirconia blanks:

  • Vertical pressing and isostatic pressing procedures
  • Zirconia powder preparation and color recipes
  • Recycling and re-use of zirconia from processed zirconia blanks

PRIMERO® CAD/CAM production method:

  • Patented production method with air-bubble-free, low-shrinkage, thixotropic paste
  • Patent (US 8,828,287) and new patent application
  • Scan-body library for most commercially available implants

Extensive documentation:

  • Quality manuals and product dossiers (including CE certification)
  • Quality plans and procedures, work instructions

Two year consultancy by dr. Jef van der Zel:

  • Instruction of personnel
  • Software modification guidance
  • Quality procedures (CE) and registrations


  • Van der Zel JM. Primero: Six Years of High-Performance: Cognitive Production of Crowns and Bridges. Int J Dent Oral Health 2018;4(5):135-139.
  • Van der Zel JM. High-Strength Porcelain Veneering of Zirconia Prosthetic Mimetic Restorations (PRIMERO) by Cognitive Design and Manufacturing. J Dents Dent Med 2019;2(2):1-4.