American Board of Orthodontics (ABO) Practice Exam 2025 – All-in-One Resource to Master Your Orthodontics Certification!

The maximum safe diameter for intraradicular placement of temporary anchorage devices (TADs) is crucial for maintaining the integrity of the tooth while achieving effective orthodontic treatment. When placing TADs, it is essential to ensure that the diameter does not exceed what the anatomical structures, particularly the roots, can accommodate without risking damage.

A diameter of 1.2-1.3 mm strikes a balance between providing sufficient strength for anchorage and reducing the risk of root perforation or damage. This range allows for adequate stability and support for orthodontic forces while minimizing the likelihood of complications associated with larger diameters.

Bigger diameters, such as those mentioned in other choices, might increase the risk of serious complications, including root fracture or damage due to insufficient space. Thus, adhering to the 1.2-1.3 mm guideline ensures a safer placement of TADs while still providing effective orthodontic support.