Dental Arch Wires

Reducing friction at Bracket Wire interface

Dental arch wires play a crucial role in tooth alignment and movement, One of the major issues arising from utilizing arch wires is the friction between the bracket and wire interface. Reducing the friction between this interface can be achieved by utilizing one of our tough, biocompatible, PTFE coatings that are optimized for surface adhesion and durability. We provide our customers the ability to coat sensitive low temperature nitinol wire as well as standard stainless steel wire substrates by offering our 850g-1000 or 850g-1025 coatings that are designed to lower the coefficient of friction while maintaining strength and durability.

Wires Successfully Coated

• Nickel-Titanium (Ni-Ti) Wire

• Beta-Titanium Wire

• Stainless steel Wire


Coating Application & Recommendations

All Miller-Stephenson’s Fluoropolymer coatings can be applied via spray, dip or spool-to-spool methods. Proper post-application curing equipment is critical to guarantee performance and durability. Acceptable curing equipment includes high-temperature ovens which can safely maintain temperatures of 246 °C  (475 °F) or utilize IR ovens. This is to ensure proper sintering of the coatings onto the wire and promote the best surface characteristics that can be achieved.



ASTM 1894 Coefficient of Friction

ASTM D3359 Adhesion Test

ISO 7802 Wire Wrap Test

ISO 11070 Corrosion Resistance Test

• Coated smooth stainless steel panels passed Adhesion test, ASTM-3359

• Coated stainless steel catheter guidewires passed flexibility/adhesion tests, ISO 7802 Annex F wrapping test

• Coated stainless steel catheter guidewires passed corrosion resistance, ISO 11070 Annex B, saline soak test

**All Miller-Stephenson’s formulations generate very uniform thin films which exceed all ISO and ASTM requirements.



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