ARCH

(redirected from Arch wire)
Also found in: Dictionary, Thesaurus, Medical, Legal, Encyclopedia, Wikipedia.

ARCH

Autoregressive Conditional Heteroskedasticity

A statistical measure of the average error between a best fit line and actual data that uses past data to predict future performance. General Autoaggressive Conditional Heteroskedasticity is the most common way of doing this. See also: Fractal Distribution.
References in periodicals archive ?
Effects of composition and cross section on the elastic properties of orthodontic arch wires.
Sandrik, A comparative study of frictional forces between orthodontic brackets and arch wires, Am J Orthod Dentofacial Orthop,100(6),513-522(1991).
Force for intrusion is achieved in the arch form by including the anchor bends or reverse curve of spee which become activated when the arch wire is pinned to the teeth i.
Clarity Mechanical lock base, Translucent twin brackets, APC II, Bidirectional canine and premolar hooks, Torque in the base, Metal lined slot, Tie wings for easy ligation like metal brackets, Rounded contour and dome shaped profile for patient comfort, Have prominent recessed ID dot, Twin design, Base flange for easier placement and adhesive flash clean-up, Stress concentration allows for metal like debonding, Debracketing by squeezing the mesial and distal wings of the metal arch wire slot with How or Weingart plier.
amp; l) (pack of 10 each),stainless steel arch wire blanks- 0.
The company's first products are the patented translucent arch wires and retainer wires for the aesthetic orthodontic treatment market.
Invisalign has long been the preferred treatment with the convenience of removable aligners and no bracket or arch wires.
Align and Ormco have also agreed upon an exclusive collaboration over the next seven years to develop and market an orthodontic product that combines the Invisalign system with Ormco's Insignia orthodontic brackets and arch wires system to treat the most complex cases.