Adolescent 1 American Board of Orthodontics 1 Discrepancy index 1 Female 1 Humans 1 Male 1 Malocclusion 1 Orthodontic Appliances, Fixed 1 Orthodontic treatment time 1 Orthodontics, Corrective 1 Retrospective Studies 1 Severity of Illness Index 1 Time Factors 1 adolescent 1 classification 1 female 1 human 1 male 1 malocclusion 1 orthodontics 1 procedures 1 retrospective study severity of illness index 1 standards 1 statistics and numerical data 1 time factor 1