title: Can we extract useful and scientifically sound information from retrospective nonrandomized trials to be applied in orthodontic evidence-based practice treatments?
authors.forename: Carlos
authors.initials: C
authors.lastname: Flores-Mir
mesh_terms: D002986:Clinical Trials as Topic / Q000379:methods*; D018865:Dental Research / Q000379:methods*; D019317:Evidence-Based Medicine; D006801:Humans; D009971:Orthodontics, Corrective; D012107:Research Design; D012189:Retrospective Studies