What is the washer in Passivity Plus, and why is it important?
The washer around the screw head is described by the inventor as 'the most important creative thing in all the patent' and 'the big game.'
The Problem: When any screw is tightened, the thread geometry naturally centers everything. Without intervention, these centering forces would negate the compensating adjustment achieved by the pivotable cap.
The Solution: The flexible washer allows the screw head to remain off-center (tilted) even when fully torqued. This means the adjusted/compensated position is maintained without stress transfer.
Visual confirmation: After full torque, the screw head may appear slightly tilted rather than perfectly centered - this is normal and indicates that the washer is functioning correctly.
Additional Resources
For more information concerning Passivity Plus:
Contact Information
For help implementing Passivity Plus to your next case, contact ROE Dental Laboratory:
- Phone: (216) 663-2233
- Email: info@roedentallab.com