title: [Anterior tooth intrusion with the base arch: preactivation by tip-back bending or curvature?].
abstract: Burstone's intrusion mechanics has been found to be effective in the treatment of a deep bite due to intrusion of the anterior teeth. The pre-activation of the intrusion arch by a tip-back bending shows a shortening in the activation. Measurements objectified the extent of the shortening and the resulting horizontal forces for TMA arches of a dimension of 0.017 x 0.025 inch relating to different distances between molars and anterior teeth and pre-activation by means of tip-back bending or curvature. The change of the vertical force in connection with a simulated intrusion of 5 mm was also registered. Clinical consequences of the therapy are discussed.
authors.affiliation: Department für Kieferorthopädie, Universitätsklinik für Zahn-, Mund- und Kieferheilkunde Graz, Osterreich.
authors.forename: H P
authors.initials: HP
authors.lastname: Bantleon
authors.forename: F J
authors.initials: FJ
authors.lastname: Weiland
authors.forename: H
authors.initials: H
authors.lastname: Droschl
mesh_terms: D003481:Cuspid; D006801:Humans; D007180:Incisor; D008310:Malocclusion / Q000628:therapy; D008963:Molar; D009967:Orthodontic Appliances; D009969:Orthodontic Wires; D014087:Tooth Movement Techniques / Q000379:methods*
vernacular_title: Frontintrusion mit dem "Base-arch". Voraktivierung mittels Tip-back-Biegung oder Kurvatur?