Bracketless Lingual Orthodontics, first published by Professor Aldo Macchi, evolved from the need to treat relapsed anterior tooth malpositions without patients undergoing further multibracket therapy. In a landscape characterized by increased demand for treatment by adult patients, and the need for invisible therapies in order to overcome issues of anxiety and embarrassment, the scope of its application has subsequently expanded to include increasingly complex malocclusions.The aim of this book is to describe this new therapeutic procedure. Chapter by chapter we will present the technique, covering materials used, clinical procedure in forming appliances, bonding to dental surfaces, and subsequent monitoring. Detailed analysis will be provided of the forming, activation, and bonding of appliances in the control of specific tooth movements. Particular attention is paid to movements in the horizontal and vertical planes, tip and torque control, derotation and root movement. Finally, the treatment of a series of clinical cases is illustrated, increasing in complexity, from Class I malocclusions to the correction of class relationships. Where extraction cases are concerned, the management and use of provisional restorations is presented. Methods of achieving bone regeneration by means of orthodontic movement are also described.