Luis Huanca Ghislanzoni - Research Assistant, Department of Orthodontics, School of Dentistry, University of Geneva, Geneva, Switzerland;Visiting Professor, Department of Orthodontics, Vita Salute San Raffaele University, Milan, Italy;Unit of Dentistry, Di
Frederick Berardinelli - ۴Private Practice in Geneva and Bulle, Switzerland
Costanza Tagliatesta - Unit of Dentistry, Division of Orthodontics, Research area in Dentofacial Orthopedics and Orthodontics, IRCCS San Raffaele Scientific Institute, Milan, Italy;۵Resident, Department of Orthodontics, Vita Salute San Raffaele Universi
Alessandra Lucchese - Unit of Dentistry, Division of Orthodontics, Research area in Dentofacial Orthopedics and Orthodontics, IRCCS San Raffaele Scientific Institute, Milan, Italy;۶Aggregate Professor, Department of Orthodontics, Vita Salute San Raffae

Introduction Mesiodens is the most common type of supernumerary tooth with proportion of males: females of ۲: ۱. The etiology of this anomaly is various and includes both genetic and environmental factors, syndromic conditions and disturbances in dental development. Case Presentation A palatally positioned maxillary midline mesiodens was incidentally found during x-ray check-up in a ۱۴-year-old female. It was associated with major crowding and a huge upper midline shift. The oral surgeon did not deem prudent a surgical access due to crowding. Patient was treated with screw-borne active anchorage, all four first bicuspids extracted, braces bonded on both arches and consequent mesiodens surgery removal. After alignment a safe palatal surgical access was available. Satisfactory functional and esthetic results were achieved and stable at a ۲-year follow-up.

Mesiodens, Screw, Born Anchorage, Multidisciplinary Treatment