{Reference Type}: Case Reports {Title}: Thirteen-year-old female patient with class II division 2 and normodivergent mandibular retrognathia treated with a fixed buccal appliance. Clinical case No. 221052, Commission of Titularisation. European College of Orthodontics. {Author}: Mailly J; {Journal}: Int Orthod {Volume}: 21 {Issue}: 3 {Year}: 2023 09 7 暂无{DOI}: 10.1016/j.ortho.2023.100782 {Abstract}: Date of birth>09/06/2004; sex: female. Pre-treatment documents>13years 4months old: 07/07/2017. Diagnosis>Skeletal class II with mandibular retrusion, normodivergent facial pattern; class II division 2. Treatment planning>bimaxillary buccal fixed appliance. Duration of active treatment>29months. Post-treatment documents>15years 6months; 20/12/2019. Post-retention documents>16years 7months old; 04/01/2021. Retention period>2years 9months and still continued.