The fixed edgewise appliance provides precise control over tooth movement, allowing for effective bodily movement of incisors. This appliance uses brackets and archwires that generate controlled forces to move the entire tooth, including the root, rather than just tipping the crown. It enables three-dimensional control, which is essential for achieving bodily movement. In contrast, removable appliances and elastics primarily produce tipping or limited tooth movement, and functional appliances mainly influence jaw growth rather than specific tooth positioning. Therefore, the fixed edgewise appliance is the most reliable for controlled, bodily movement of incisors.

Reference: Contemporary Orthodontics, 6th Edition.