The 53rd Annual Scientific Congress of the Korean Association of Orthodontists PASSION FOR A LONG JOURNEY :
Nature vs Nurture

November 5(Thu) - 6(Fri), 2020
Precongress: November 1(Sun) / VOD: November 7(Sat) - 8(Sun)

Protrusion problem

Looking at bimaxillary protrusion from a different perspective
Dr. Flavia Artese
  • Associate Professor of Orthodontics, Rio de Janeiro State University; MSc and PhD in Orthodontics, Federal University of Rio de Janeiro; Diplomate of the Brazilian Board of Orthodontics, Member of the Angle Midwest Society, Editor in Chief of the Dental Press Journal of Orthodontics.

Bimaxillary protrusion has a significant influence on facial esthetics and orthodontics plays an important role in its correction, since incisor retrusion allows major lip changes. In contemporary orthodontics this can be achieved, in varying degrees, by three basic mechanisms: interproximal reduction, full arch distalization using skeletal anchorage, or premolar extractions. In premolar extraction cases it is not yet clear if there is a difference in anchorage loss and therefore in the amount of incisor retraction with two-step or en-masse retraction mechanics. Three dimensional aspects of cases treated with such mechanics will be presented regarding occlusal and facial effects. Although bimaxillary protrusion has been traditionally looked at in a profile view by our profession, it will be shown that this malocclusion is of greater impact in the frontal view, being associated with perioral muscular contraction, which can suggest unrested facial expressions. This presentation will demonstrate that 3D analysis and frontal perception of bimaxillary protrusion can shed light to a whole new perspective on this malocclusion.