[Biomechanical principles of Ricketts-Burstone sectional retraction].
Beszkin
E
E
Grinspon
G
G
Rizzuti
A
A
D006801:Humans; D008310:Malocclusion / Q000628:therapy; D009967:Orthodontic Appliances; D009971:Orthodontics, Corrective / Q000379:methods*
Principios biomecánicos de la retracción seccional Ricketts-Burstone.