Key information: Temporary Anchorage Device, dental intrusion
Skeletal anchorage extends the range of orthodontic anchorage possibilities with Temporary Anchorage Devices (TADs), that can provide absolute anchorage for a short period of time.
TADs are now very often used in clinical orthodontic treatment for direct or indirect anchorage, with different objectives: expansion, open bite or class III correction, gummy smile treatment, preprosthetic treatment, full arches distalization/mesialization or retrusion of the upper incisors, etc.; they are commercially available in the screw diameter range of 1.2 – 2.7 mm and in length varying from 4 to 12 mm. The most common site for their placement is the interradicular bone between the teeth, but also extraradicular in palatal bone, infrazygomatic crest and mandibular buccal shelf, with less risk of damaging rooth and interfering with mesiodistal movement of teeth or groups of teeth and also with low failure percentage, if compared to the conventional miniimplants.
In this context, some clinical cases will be presented, showing different use of TADs in gummy smile and some preprosthetic treatments involving dental intrusions. The cases were treated successfully, functional and also aesthetic, showing that nowadays the TADs are the best useful tool in the modern practical orthodontics.