American Board of Orthodontics (ABO) Practice Exam

The clinically acceptable immediate loading force for temporary anchorage devices (TADs) typically falls within the range of 100-200 grams. This range is supported by various studies and clinical guidelines that emphasize the importance of balancing effective anchorage with the biological response of the surrounding periodontal tissues. When loading TADs within this force range, orthodontists can achieve desired tooth movement while minimizing the risk of implant failure or the resorption of surrounding bone.

For instance, loading forces that are too low may not sufficiently stabilize the TAD, leading to inadequate anchorage during treatment. Conversely, if the forces exceed this range, there is a heightened risk of affecting the stability of the TAD, causing discomfort to the patient, or potentially leading to implant failure. Therefore, choosing the immediate loading force between 100-200 grams strikes a crucial balance for optimal clinical outcomes.