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2018 Annual Session Conference

Preformed Archwires: Do They Match the Natural Diversity of the Dental Arch?

May 6, 2018 7:30am ‐ May 6, 2018 8:00am


How do you select preformed archwires for each individual patient? Recent randomized clinical trials that evaluated changes in mandibular dental arch form found significant arch expansion in the early stages of orthodontic treatment. These dimensional changes have been suggested to result from the inconsistency between the manufactured archwire forms and the natural diversity of the human dental arch form. This lecture presents an evaluation of the variation in form of mandibular preformed archwires based on a comparison of the dental arch form of Japanese and American subjects.

Learning Objectives:

  • Comprehend that individual variation is more important than ethnicity in terms of dental arch forms.¬†
  • ¬†Recognize that manufactured variation in the form of preadjusted archwires is not based on biological research.
  • ¬†Identify the differences between preadjusted archwire forms.


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