L'estetica del sorriso e del volto: fattori determinanti, canoni di riferimento e cambiamenti con l'etÃ

Objectives. To illustrate some of the fundamental orthodontic guidelines for maintaining the harmony of the dento-periodontal unit and the face, which includes a dynamic component: the smile. Materials and methods. This dossier examines the golden ratio of dental to gingival components in the smile; the relationships between teeth, gums, and lips in the dynamic smile; the effects on the smile of excessively large buccal corridors and their relation to the position of the teeth within the dental arches; and the role of the smile the overall facial esthetics. It also reviews the modifications that will be produced by aging in the soft and hard tissues of the face, for the orthodontist must always evaluate the patients face prospectively: not only as it appears at the time of treatment, but also as it will appear after the passage of time. Results and conclusions. Esthetics is a relative concept, and it is difficult to establish rigid guidelines for producing a beautiful smile and a beautiful face. However, orthodontics has introduced some general rules that can help maintain the harmony of the face through the dynamic component of the smile.