title: Author's response.
authors.affiliation: Freiburg im Breisgau, Germany.
authors.forename: Mareike
authors.initials: M
authors.lastname: Simon
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*