1. Adjust water temperature between 165° and 170°F (73°-77°C).
2. Set baseplate on treatment table with suitable head and neck support.
3. Identify which holes on the frame fit your base for easier fitting for when the thermoplastic is ready.
4. Position patient on table.
5. Place the U-Frame in heated water until thermoplastic becomes completely transparent (about 2-3 minutes).
6. At about 30 seconds after transparency, lift U-Frame from water and quickly shake off excess water. Feel thermoplastic to be sure it is not too hot.
7. Center the U-Frame over the patient's face. Tilting slightly downwards at the chin, gently and steadily press the thermoplastic down, over the patient's face, until the outer frame touches the base. Align frame holes to pins in the base and lock in position with swivel clamps.
8. With your fingers, gently and quickly mold the thermoplastic to the contours of the patient's face (nose, lips, cheeks, etc.), advising patient to keep eyes closed. Mold gently and a little loosely to allow for shrinkage.
9. As thermoplastic cools, it becomes rigid and returns to its original white color. Do not remove U-Frame until it cools completely and rests on the patient for at least 15 minutes. Thermoplastic will shrink slightly during cooling process. Removing frame too soon may result in excess shrinkage and patient discomfort when refitting.
10. If desired, treatment portals can be cut after the U-Frame has hardened. Use heavy shears or a cast cutter.
