The TADs were introduced into the orthodontic world to make it possible to treat patients lacking sufficient teeth for conventional anchorage. Later the TADs were used to avoid the effect of undesirable forces action on the reactive units, but it was especially the option of offering compliance free treatments that made the skeletal anchorage popular. Lately it has been demonstrated that TADs may have several other applications that just serving as an aid facilitating orthodontics. Transcortical insertion of TADs can be used as bone maintainers if the time for the insertion of e dental implant has to be postponed for various reasons, age or economy. The TADS may thus serve as an adjunct to prosthodontics. Finally the TADs can serve as handles when bony units have to be displaced in relation to distraction osteotomy of alveolar bone or when a rapid palatal expansion without loading of teeth is indicated. The lecture will demonstrate the different applications.