The increasing demand for complex rehabilitative dental treatments in the adult patient and in developmental age raises the need for multidisciplinary therapies. The book is intended to trace the orthodontic-periodontal relationships, analyzing how orthodontic procedures can enhance the periodontal treatment plan, increasing its predictability, integrating it, interacting in the surgical approach and, at the same time, how Periodontology increases the potential and predictability of orthodontic treatments, synergically completing them. The Authors describe how orthodontic therapy can also be an aid to implant therapy both as a prostheticrehabilitative treatment plan and as a tissue and bone regenerative treatment, obtaining an enhancement of results that can only be achieved with a combined regenerative orthodontic-periodontal intervention. Supported by the recent international literature, all ortho-perio treatments, the Authors& x02019; orthodontic and standardized surgical techniques, and biomechanics, are described with the help of photographs of clinical cases in vestibular and lingual orthodontic techniques.