The course aims at the knowledge of odontostomatological diseases and in particular of all those malocclusions due to incorrect swallowing. During it there will be treated the prenatal and post-natal causes of malocclusions, paying particular attention to the correlation with the lingual posture, functional disorders, oral respiration, phonation disorders, atypical deglutition, muscular abnormalities and finally the spoiled habits. It will also be discussed the objective of the diagnosis in functional orthopedic -orthodontics and the importance of intercepting problems at an early age and identifying a priority of intervention. Within the course will be treated the importance of collaboration with other professionals (pediatrician, speech therapist, otolaryngologist, physiotherapist, physiatrist, etc.)