Sekundärer Engstand - aktuelle Präventions- und Therapiestrategien
摘要
In contrast to primary and tertiary crowding, secondary crowding is an acquired loss of space in the dental arch, which is usually due to early childhood caries and premature loss of deciduous teeth. In addition to functional restrictions, the following are associated with secondary crowding: tooth migration, midline shifts, ectopic tooth eruptions, and impactions. Preventive strategies include early recall systems, conservative treatment measures and the insertion of space maintainers and primarily serve to counteract orofacial maldevelopment and specifically target at-risk groups. Orthodontic treatment options for secondary crowding include the distalization of posterior teeth and dental arch expansion. If there is pronounced secondary crowding, premolar extraction (e.g., premolars) may be necessary in order to achieve functional occlusion.