Malocclusion is incorrect relation between the upper and lower teeth. This can be of a skeletal or dental origins, or a mix of both. According to the World Health Organization, malocclusion is a disease that includes: crowding, diastema, spacing and rotations of teeth. (K07.2-3; ICD-10 Version:2015).
Correcting malocclusion is necessary to maintain the health of teeth and gums.