Continuing his exploration of the Unitek™ Temporary Anchorage Device System, Dr. Moe Razavi describes the use of indirect anchorage to protract posterior dental segments in both the maxillary and mandibular arches. Specifically, he presents how to utilize a combined TransPalatal Arch (TPA) / TAD system to protract maxillary posterior segments in canine substitution cases, as well as protraction of mandibular molars using indirect anchorage to close the space of congenitally missing second premolar teeth.   ( disclaimer, bio and commercial disclosure )