On this basis, the volume deals with the correlations between orofacial functions, occlusion and posture to better understand the proper diagnostic and therapeutic procedures that can be followed toward issues of multidisciplinary relevance, involving physicians, dentists, orthodontists, speech therapists, myofunctional therapists and otolaryngologists. Therefore, the text analyze the therapy used in the treatment of so-called myofunctional disorders or changes in the mobility and tone of the orofacial musculature. The book also focuses on topics such as syndromes or specific pathologies apparently unrelated to the orthodontic field, but which a specialist in the craniofacial district must know, such as otitis media, obstructive sleep apnea syndrome, Down syndrome (also through the analysis of specific clinical cases). Speaking about occlusion, muscles and posture is always very difficult, especially when the discussion is held by specialists with different backgrounds, who base their intervention and procedures on their specific expertise and knowledge. As a matter of fact, the complex topic requires a multidisciplinary approach that describes the viewpoint of orthodontists, osteopaths, speech therapists and otorhinolaryngologists. Therefore, the volume, Myofunctional Therapy and Orthodontics is a set of reflections useful to clarify the validity of myofunctional therapy and to give a univocal address to the criteria of diagnostic assessment and treatment of problems that require the intervention of different professionals.