There are times when bracketing teeth for anchorage is either in-appropriate or not possible. For example, placing brackets on porcelain veneers or crowns is not recommended, as the bonding process can damage the finish. Some patients simply do not have enough teeth to be the sole method of anchorage. When this is the case, a removable appliance allows you to use the soft tissue, along with remaining teeth for anchorage. Appliance designs can be very flexible and creative. In some cases, you may be able to use a patient’s existing partial by simply adding a hook over the tooth needing eruption. In the example shown here, a simple acrylic orthodontic appliance with an activating spring arm can be used. This type of appliance works by simply engaging the spring over the direct bonded attachment bracket.