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BRACKETS IN ORTHO..

  • Joining together of two edgewise brackets
  • “SIAMESE TWIN BRACKET”
  • The space between two brackets was approx 0.050
  • Initially for upper central incisors and molars.
  • Terminology was changed to -“TWIN BRACKET”.
  • 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.

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