
modified spring Hawley
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RETAINERS
The Spring Hawley Retainer is effective for correcting minor rotations and crowding of up 1-1/2mm from cuspid to cuspid in the teeth. It is important to note that the Spring Hawley is not intended to increase arch width or length; instead, the necessary space for addressing crowding is achieved through careful interproximal recontouring in the anterior area only.Before creating the retainer, the lab will separate the rotated and crowded anterior teeth from the stone cast and reposition them in an ideal alignment. The appliance is then crafted based on this corrected positioning and returned to you for delivery. On the delivery day, perform the required interproximal recontouring before placing the appliance. When in use, the spring action of the cus wires applies a gentle labial-lingual force to help align the teeth. As the appliance is designed for the "ideal" position, it may not fit perfectly in the patient's mouth until the teeth adjust. Once the teeth are aligned, the appliance can as a final retainer. Note: Adequate vertical dimension is crucial since tooth movement occurs in a labial-lingual direction. If the patient has a closed vertical and the upper and lower anteriors are already in contact, movement will not take place.
