Introduction: The mouth is an essential feature of the human body since it is there that the breath and food of life pass. In addition, it bears witness to our emotions. Today, the smile has become a major means of communication and of “self-affirmation”. Objective: The first task of the orthodontist is to restore correct function while, obviously, also contributing to enhance the patient’s appearance. Materials and methods: In this article, we will present six cases to demonstrate that the leading mission of orthodontics is to restore the occlusion and function.