Custom Impression Tray Fabrication for Upper Dentures Application

Prepare a preliminary model of the edentulous arch.

Soften Easy Tray wafer in thermal unit/hot pot by immersing in water for at least 30 seconds. Water temperature must be 170°F (77°C) or hotter.

Optional step: If space for impression material is desired, spacer material of proper thickness, i.e., base plate wax, should be adapted to preliminary model while Easy Tray is softening in water bath.

Deep undercuts should be waxed out.

Using tongs, remove Easy Tray wafer from water bath and firmly adapt to preliminary model.  Start at the posterior and work toward the anterior on both sides. Roll excess material back into the tray and push to the peripheral border.

Pinch excess tray material anteriorly to form a handle.

If the Easy Tray material begins to set before adaptation has been completed, simply remove the Easy Tray material from the model and immerse in hot water bath for a few seconds. Remove and reform tray material to the model.

Place custom tray, while still in place on the study model, under cold tap water until hard about 30-60 seconds.

Easy Tray is now dimensionally stable and ready to use.

Remove tray from model.  Rough edges can be removed by shaving lightly with an acrylic bur, or by heating edges of tray in hot water bath and smoothing with a finger.

NOTE: The tray is now ready to border mold.