title: Authors' response.
authors.affiliation: Seoul, Korea.
authors.forename: MoonHee
authors.initials: M
authors.lastname: Kim
authors.affiliation: Seoul, Korea.
authors.forename: Minji
authors.initials: M
authors.lastname: Kim
authors.affiliation: Seoul, Korea.
authors.forename: Youn-Sic
authors.initials: YS
authors.lastname: Chun
mesh_terms: D003722:Dental Alloys; D005260:Female; D006801:Humans; D008297:Male; D008963:Molar; D009532:Nickel; D016382:Orthodontic Appliance Design / Q000379:methods*; D009969:Orthodontic Wires; D014025:Titanium; D014087:Tooth Movement Techniques / Q000295:instrumentation*
chemical_list: D003722:Dental Alloys; D009532:Nickel; D014025:Titanium