Twin - Arch technique. Revival of the "edgewise -Technique"?

Abstract

The Twin – Arch Technique is based on concept of orthodontic treatments with two arch wires simultaneously, even with relatively low dimensions. This method allows you to achieve a good three dimensional control of tooth movements. The use of Twin – Arch Technique requires a bracket apt to accept two arch wires simultaneously. The new SNB – Bracket (- Swiss Non – Ligating Bracket) offers these features. It consists of PolyEetherEetherKetone ( Known as PEEK ) and has two slots arrayed vertically in a distance of 2 mm from each other. Two metal gliders hold wires in place. The low dimensions of slots ( 0.0016 x 0,0022 inch ) offer a – wire technique. Two arch wires inserted in appropriate slots, one in a distance of 2 mm vertically from other, can be compared to an equal broad metal band. This treatment technique can be used either lingual or labial. The PolyEetherEetherKetone from which SNB – bracket is fabricated has a Teflon – like surface which assists in reducing treatment time due to its low friction coefficient. This becomes evident especially in relapse cases, with crowding in anterior region. If torque is to be generated for a single tooth or a group of teeth, various solutions are at hand. The Twin – Arch Technique controls efficiently, the dreaded bowing effect in extraction cases. The SNB – Bracket brings a new dimension into orthodontic world which is most apparent in extraction cases. Its Teflon – like material has a very low friction coefficient thus, reducing treatment time considerably. Through use of low dimensioned arch wires, Twin – Arch Technique becomes a Light – wire system and simultaneously provides good anchorage and torque control.