With and Without Torque
Intermediate Course
Purpose:
- To learn how to fabricate broad archwire forms from a straight piece of archwire
- To attain torque in an archwire to reposition the roots/crowns of multiple teeth
- When closing anterior space or retracting anterior teeth to prevent the teeth from torquing in an undesirable manner.
Instruments & Materials Needed (Prior to Start of Class):
- Heavy Duty Wire Cutter
- Ribbon Tweed Arch Forming Plier (x2)
- Torquing Turret
Materials Provided:
- .018 x .025 Stainless Steel Straightwire
Directions:
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- Torquing Turret – For an .018 x .025 wire and can place 0⁰ to 16⁰ torque in an archwire.
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- 0⁰ Archwire: By placing the archwire in the 1st slot this is designated as 0⁰.
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- Slide the lower half of the turret up where the metal bar goes over the wire in the slot, holding it in place.
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- Twist the lower half of the turret to the right WHILE holding the wire with the thumb.
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- Keep twisting until the wires cross as shown. KEEP HOLDING the wire with your thumb and fingers. Rotate the opposite directions.
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- Shown is a finished archwire with no torque.
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- Place the fabricated archwire over the template to assure an accurate arch form.
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- Repeat the process for the lower archwire. Start by placing the wire in the 0° slot.
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- Shown are the upper and lower fabricated archwires placed on a template for arch symmetry.
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- Using an Arch Marker, make a mark at the end of the template.
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- Cut the excess off the archwire.
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- Shown is accurate fabricated archwire over a template showing consistency in the two.
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- 10° Torqued Archwire: Place the wire in the 3rd slot down which will make a 10° torque in the wire.
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- Slide the lower half of the turret up making sure the metal bar is over the wire.
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- While holding the wire with your thumb, twist the metal bar all the way around until the wires cross and back again.
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- Remove the wire from the turret and place on a template showing accuracy.
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- By using a Ribbon Arch Plier, it is easy to see the torque that has been placed in the ENTIRE archwire.
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- Place the fabricated wire over the template and measure to cut the excess off.
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- Cut the excess from the distal ends.
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- Just as in ANY rectangular archwire that torque has been added, it MUST be removed in the posterior.
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- Use the two Ribbon Arch Pliers, as shown, to de-torque the posterior legs to remove the lingual root torque.
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- Repeat the process to fabricate an upper archwire with 10° torque.
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- Again, use the Ribbon Arch Plier to check the torque place in the ENTIRE archwire.
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- De-torque the posterior legs of the archwire to remove the lingual root torque that was created.
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- Twisting buccally will add buccal root torque required by Andrews Six Keys to Occlusion.
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- Completed exercise Fabrication of Archwires.
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