Arch-width changes in extraction vs non-extraction treatments - Published in the AJO-DO in April 2017

Highlights

• Discriminant analysis identified borderline extraction and nonextraction patients.
• Perimeter curves were drawn on a constructed occlusal plane.
• Extractions led to a transverse dental arch decrease posteriorly.
• Nonextraction dental arches showed an increase of all arch-width measurements.
• Perimeter curves decreased in extraction and were maintained in nonextraction patients.