J. Orthod.
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British Journal of Orthodontics, Vol 19, 221-225, Copyright © 1992 by British Orthodontic Society

ARTICLES

Bioprogressive brackets and pentamorphic arches

RG Oliver, ML Jones, NR Robertson and PT Nicolson
Department of Child Dental Health, Dental School, Heath Park, Cardiff.

The use of high torque values with no tip in preadjusted incisor brackets in the Bioprogressive system, in conjunction with narrow anterior rectangular archwires may produce crown spacing, root crowding and upright central incisors. The solution to these problems would seem either to reduce the time spent in rectangular wires or to change to a bracket with reduced torque, together with appropriate second order compensations in the archwire or the bracket.




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Copyright © 1992 British Orthodontic Society.