What is an active force in orthodontics?

In orthodontics, an active force refers to a force that is intentionally applied to create movement in the teeth. This is a fundamental concept because the primary goal of orthodontic treatment is to properly align teeth within the dental arch and correct malocclusions. Active forces are employed through various appliances, such as braces or aligners, which transmit pressure to the teeth, encouraging them to move into desired positions.

This force is distinct from forces that resist movement or maintain current positions, which do not facilitate shifting the teeth but rather keep them stable where they currently reside. Active forces are essential for achieving effective tooth movement, contributing to the overall success of orthodontic therapy. Understanding the role of active forces is crucial for orthodontic treatment planning and achieving successful outcomes.