Prof. Wiechmann received the recognition as a specialist in orthodontics in 1997. He has been in private practice since 1998 in Bad Essen, Germany, which is actually the biggest lingual practice in the world with about 1000 lingual patients in active treatment. In 2011 he received his Phd in orthodontics. Since his appointment in 2013 he is professor of orthodontics at the Hannover Medical School. In 2016 he received the Doctor Honoris Causa from the University of Montpellier, France. Prof. Wiechmann has written mare than a hundred scientific papers mostly on quality of treatment outcome and has received several prices and honours for his scientific work in the field of lingual orthodontics. Among them the Honorary price of the French Federation of Orthodontics. The focus of his scientific activity is lingual orthodontics.