Unique properties of Wilcock wires • It is an ultra high tensile austenitic steel arch wire • Zero stress relaxation(allows the wire to maintain its force over a longer period of time, yet resists permanent deformation from elastic load) This wire forms backbone of Begg’s appliance. Color coding of the wires are as follows (Figure 2): • Regular-White Label • Regular Plus-Green Label • Special-Black Label • Special plus-Orange Label • Extra Special Plus-Blue Label • Premium-Purple Label • Premium Plus-Orange Label • Supreme-Yellow Label • Supreme Plus-Cream Label The wires are available in following dimensions and grades Regular/RegularPlus/Special/Special Plus/Extra Special Plus/ Premium-0.016”.0.018”, 0.020”, 0.022”. Premium Plus-0.010”0.012’, 0.014”, 0.016”, 0.018”. Supreme-0.008”,0.009”,0.010”,0.011”,0.012”. Premium wires To maintain arch forms. Premium Plus To fabricate up-righting and torquing springs. Supreme Ultra high tensile wires used for alignment in lingual Orthodontics, to fabricate reciprocal torquing springs,mini springs. Combination Arch Wires The wire is combination of two diameters. In the posterior segment diameter is 0.018” ovoid whereas anterior segment 0.018” x 0.022”. In Begg’s technique it can be used in St. III, which fills the bracket slot and avoids torque loss in anterior and lesser friction in posteriors during retraction/anchor loss. Respond Wires Respond is a strand, spiral wrap with a central core wire (coaxial) (Figure 2). Respond can deliver light, initial forces while filling the archwire slot for greater control.
Figure 2: Respond (Co-Axial).
D-rect (Braided Preformed and straight) D-Rect is an 8-stranded, inter-woven rectangular wire (Figure 3). Its high flexibility, together with 3-dimensional control and slot filling capabilities, make it ideally suited for multiple applications: 1. Initial torque control. 2. Picking up second molars later in treatment. IJO
3. A finishing arch wire, where torque control is desired yet resilient to permit inter-arch occlusal “settling” 4. Torque control with vertical and / or anterior box elastics. Force-9 Braided Preformed Force -9 (Figure 4) is a 9-strand, Inter-woven rectangular wire. Its high flexibility, together with 3 -dimensional control and slot filling capabilities make it ideally suited for multiple applications as D-Rect wires.Force-9 delivers about 50% more force than 8-stranded D-Rect.Its selection is based on similar applications where slightly more forces seems to be indicated.
Figure 3: D-Rect (Braided Rectangular Stainless Steel).
Figure 4: Force -9 (Braided Rectangular Stainless Steel).
Figure 5: Turbo Wire (Braided Rectangular Niti).
HT/Gold Heat Treated Stainless Steel Is a high temper stainless steel wire which provides higher force levels and greater spring back (working range) than traditional stainless steel wire. It should be considered in applications where resistance to deformation is a primary factor. The higher force levels and rigid nature of this wire make it an excellent choice for transverse arch form control. Menzanium (Non-nikel containing alloys) Is fabricated in a patented high pressure melting process where Manganese and Nitrogen replace allergic components of Ni. 1.Ideal for Ni sensitive patient. 2.Corrosion resistant and durable. Cobalt Chromium Alloys (Elgiloys) 1, 3, 12, 13 Developed by Elgin National Watch Company in the mid century. Main advantage of this wire over stainless steel is, it is easier to bend in its “as received state.” So it is preferred in techniques in which loops in arch wires are used. It can be heat 49