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Evolution of Orthodontic Brackets

  • This was the next development for bringing about  efficient tooth rotation.
  • He soldered auxiliary rotation arm that abutted  against the bracket itself and thus offered a lever arm to deflect archwire and rotate the teeth.
  • Present day lewis bracket is a one piece bracket with rotational wings which is equivalent to original edgewise bracket with single width feature.
  • Counterbuccolingual tip- a slot sitting feature for maxillary molar that counteracts buccolingual tip during translation and then overcorrect.
  • Countermesiodistal tip –a slot siting feature that counteracts mesial or distal tipping during translation and then overcorrects.
  • Counterrotation – a slot siting feature that counteracts rotation during translation and then overcorrects ,

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