American Board of Orthodontics (ABO) Practice Exam 2026 – All-in-One Resource to Master Your Orthodontics Certification!

The placement torque of Temporary Anchorage Devices (TADs) is influenced by the density and quality of the bone in the area where the TAD is placed. In orthodontics, the mandible generally has denser bone compared to the maxilla and other regions, which contributes to a higher torque during placement.

When a TAD is inserted into the mandible, the cortical bone is typically thicker and more robust, providing greater resistance against rotation and, therefore, requiring more torque for placement. This is particularly important in orthodontic practice, where adequate torque is crucial for the stability and effectiveness of the anchorage.

In contrast, areas such as the maxilla or palate may not provide the same resistance due to differing bone density and anatomical characteristics. The anterior teeth region also has its own complexities in terms of bone type and morphology, which can further influence the placement torque but generally does not result in values as high as those achieved in the mandible.

Thus, the anatomical structure of the mandible makes it the location that yields higher placement torque for TADs.