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How does the screw design of Passivity Plus prevent screw loosening?

The Passivity Plus™ features a conical screw design that creates a 'cold welding' effect:

  • Taper angle: 5 degrees per side (10 degrees total)
  • Mechanism: Conical screw engages matching internal taper under torque
  • Result: Friction-locked connection that virtually eliminates screw loosening

This is comparable to the cold-welding principle used in other dental and non-dental applications: it occurs between the screw body and the internal base walls rather than at the implant-abutment interface.

Additional Resources

For more information concerning Passivity Plus:

 

Contact Information

For help implementing Passivity Plus to your next case, contact ROE Dental Laboratory: