In daily life, we encounter friction. Orthodontics is also affected by friction. Friction is undesirable in many therapeutic circumstances. Therefore, reducing friction is necessary to reduce treatment duration and decrease any side effects. The vast array of sliding system appliance combinations makes it extremely difficult to create a force system that is ideal for tooth movement. Before making judgements, every clinician must weigh the benefits and drawbacks of friction mechanics and be aware of the underlying biomechanics.