Esthetics is one of the major goals in orthodontic treatment Lingual orthodontics is the only orthodontic technique which is really invisible and permits the patient to have a beautiful smile not only after, but also during treatment and allowing a realistic control of the results.This article reviews the development, advantages and disadvantages, bonding techniques, biomechanics, and treatment procedures of the lingual appliance The aim of this article is to give a broad view of Lingual Orthodontics concepts and treatment in a simplified way, to encourage the orthodontist to use this important treatment modality regularly in their practice.