title: Authors' response.
authors.affiliation: Freiburg and Bonn, Germany.
authors.forename: Mareike
authors.initials: M
authors.lastname: Simon
authors.affiliation: Cologne, Germany.
authors.forename: Jörg
authors.initials: J
authors.lastname: Schwarze
authors.affiliation: Freiburg, Germany.
authors.forename: Britta A
authors.initials: BA
authors.lastname: Jung
authors.affiliation: Bonn, Germany.
authors.forename: Ludger
authors.initials: L
authors.lastname: Keilig
authors.affiliation: Bonn, Germany.
authors.forename: Christoph
authors.initials: C
authors.lastname: Bourauel
mesh_terms: D001641:Bicuspid / Q000473:pathology*; D005260:Female; D006801:Humans; D007180:Incisor / Q000473:pathology*; D008297:Male; D008963:Molar / Q000473:pathology*; D016382:Orthodontic Appliance Design; D009968:Orthodontic Appliances, Removable; D014087:Tooth Movement Techniques / Q000295:instrumentation*