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Related Experiment Videos

Bioprogressive brackets and pentamorphic arches.

R G Oliver1, M L Jones, N R Robertson

  • 1Department of Child Dental Health, Dental School, Heath Park, Cardiff.

British Journal of Orthodontics
|August 1, 1992
PubMed
Summary
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High torque in Bioprogressive orthodontics can cause incisor spacing and crowding. Reducing rectangular wire time or using low-torque brackets with compensations can resolve these issues.

Area of Science:

  • Orthodontics
  • Bioprogressive therapy
  • Dental biomechanics

Background:

  • Preadjusted incisor brackets in the Bioprogressive system often utilize high torque.
  • Narrow anterior rectangular archwires are commonly used in conjunction with these brackets.

Purpose of the Study:

  • To identify potential adverse effects of high torque and narrow rectangular archwires in Bioprogressive orthodontics.
  • To propose solutions for managing incisor spacing, root crowding, and uprighting of central incisors.

Main Methods:

  • Clinical observation of incisor bracket and archwire interactions.
  • Analysis of biomechanical principles in orthodontic tooth movement.

Main Results:

  • High torque values combined with narrow rectangular archwires can lead to undesirable crown spacing and root crowding.

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  • Central incisors may become excessively uprighted.

    • Conclusions:

    • Modifying treatment duration with rectangular wires is a potential solution.
    • Utilizing brackets with reduced torque, complemented by archwire or bracket-based second-order compensations, can mitigate adverse effects.