title: [The direct bonding technique for brackets and related factors: Review of the literature]
authors.affiliation: Department of Orthodontics, Ninth People's Hospital, School of Stomatology,Shanghai Second Medical University. Shanghai 200011, China.
authors.forename: Z Q
authors.initials: ZQ
authors.lastname: Chen
authors.forename: S S
authors.initials: SS
authors.lastname: Peng