1 –The word "orthodontics". In 1841, Lefoulon suggested the term "orthodontosie," which the Americans simplified to "orthodontia" and, later, to "orthodontics". But the French resisted. A long struggle began between"orthopedics" and "orthodontics, " which wound up in 2007 with "orthognathodontics". Have we reached a truce?

2 – The word "malocclusion". E. Angle decided that the word "irregularity" employed in the 19th century was inappropriate. He proposed the term "malocclusion", which the French for a long time denigrated only to begin to employ it recently. But beneath new vocables new concepts are hidden.