Wires and expansion screw on model.

Acrylized model. Be sure to leave about 3-4mm of wire free at edges of acrylic.

Once acrylized, the Nance portion should be trimmed so that there are no sharp edges. Cut off any excess wire from the spring arms and make sure they intersect the mesial sides of the molar sheaths.

Make final adjustments in the Pendulum Appliance. The appliance is fabricated so that it is passive. If the bands with lingual sheaths are on the model, the activation can be completed in the laboratory.

When the appliance is ready to be placed before activation, a final bend is placed on the end of each spring where the wire will insert into the lingual sheath. This bend should be made with a round-edged plier.

Anterior retention of the Nance button should be in four locations (two mesial and two distal) to prevent the button from lifting anteriorly with the activation of the TMA Pendulum Springs. The entire appliance is usually occlusally bonded on either the permanent or deciduous teeth. For greater stability, the first bicuspid can be banded and the retention wire soldered to the band. We have had great success with only one span of wire being inserted into the lingual sheath instead of employing the double-back bend previously used. This greatly simplifies insertion and removal of the spring arms.