TY - BOOK AU - Al Mohammed,Ahmed Fareed AU - Al Mangoury,Nagwa Helmy AU - El Sayed,Hend Salah TI - Evalution Of Extrnal Root Resorption During Maxillary and Mandibular Retraction at 2.4.6 and 8Weeks: Reactivation Intervals using power chain in 1 st Permolars Extraction Cases : Randomized Controlled Trial U1 - 617.643 21 PY - 2019/// KW - Orthodontics, Corrective KW - Oral Surgery N1 - Supervisors: Nagwa Helmy Al Mangoury, Hend Salah El Sayed; Thesis (M.Sc.)-Future University,faculty of oral and dental medicine, 2019 UR - http://repository.fue.edu.eg/xmlui/handle/123456789/5229 ER -