title: Authors' response.
authors.affiliation: Seoul, Korea.
authors.forename: Chooryung J
authors.initials: CJ
authors.lastname: Chung
authors.affiliation: Seoul, Korea.
authors.forename: Yoon Jeong
authors.initials: YJ
authors.lastname: Choi
authors.affiliation: Seoul, Korea.
authors.forename: Kyung-Ho
authors.initials: KH
authors.lastname: Kim
mesh_terms: D005260:Female; D006801:Humans; D007180:Incisor / Q000000981:diagnostic imaging*; D008437:Maxilla / Q000000981:diagnostic imaging*; D052280:Orthodontic Anchorage Procedures / Q000295:instrumentation*; D011859:Radiography; D014087:Tooth Movement Techniques / Q000295:instrumentation*; D014092:Tooth Root / Q000000981:diagnostic imaging*