Deep overbite correction is one of the difficulties in orthodontic treatment. If a patient is a vertical growth patter associated with long face or gummy smile, that need doctor to diagnosis carefully and chose a reasonable methods and equipment. Anterior teeth intrusion can treat such patients with deep overbite more effectively. There are some intrusive technologies such as: 3-pieces segment arch, utility arch, J-hook, mini-implant, and so on. The aim of this article was to review the intrusion technology, biomechanical mechanisms, clinical treatment evaluation and their impact on surrounding tissues.
