A 9-year-old patient referred to orthodontics service of Hospital Sant Joan de Déu de Barcelona due to 2.1’s retention due to the presence of two mesiodens. Second phase mixed teething, 2.1 absence, skeletal class I. Extraction of erupted mesiodens and watchful waiting kept for the second mesiodens, which was finally exodontiated in the operating room. Afterwards, 2.1 orthodontic traction carried out by a utilitarian arch (2 × 4).
(Rev Esp Ortod. 2020;50(2):2-075-082)