Crown Under Partial Technique (C.U.P.)
CROWN & BRIDGE TECHNIQUE
The C.U.P. technique is designed for the patient who does not want to be without their partial while the dental lab fabricates their new crown. We believe this technique is an excellent solution provided all the steps are closely followed.
FOR A PRINTABLE TECHNICAL BULLETIN ON THE C.U.P. TECHNIQUE click here.
FIGURE 1
Prepare the tooth for a crown. Without the partial in place, take an impression as you normally would.
FIGURE 2
Fabricate a thin light-cured coping (shown here in red) that will sit securely on the prep.
Spray tray adhesive on the coping and securely seat the coping on the prep.
FIGURE 3
Place the partial in the mouth, being sure that it is fully seated.
FIGURE 4
While holding the partial securely in place, inject blue mousse material
all around the clasp. Hold this until the material is set.
FIGURE 5
Remove the partial. The blue mousse material will be attached to the clasp.
Using a blade, carefully cut away the material around the clasp until it is exposed.
FIGURE 6
Remove the index from the partial by pushing in an apical direction.
Temporize the preparation and send the patient home wearing their partial denture.
FIGURE 7
Carefully wrap the original impression along with the impression shown here
and ship them to Johns Dental for crown fabrication.
Johns Dental guarantees the C.U.P. technique providing all steps are carefully followed.