GDC T. Burnisher – Double Ended – 1 (Tb2)

Before making a primary impression, palpate the palatal tissues anterior to the proposed posterior border of the prosthesis using a “T” burnisher to determine
their compressibility in width and depth.
Make a primary impression using irreversible hydrocolloid impression material.
Delineate the proposed posterior palatal seal area in the mouth using an indelible pencil and transfer it onto the primary cast.
Use the “nose blowing method” to determine the anterior vibrating line and the “phonation technique” for the posterior vibrating line.
Fabricate a customized tray by using chemically polymerized clear acrylic resin (DPI-RR cold cure; with a 1.5 mm wax spacer.
Fabricate the tray in such a way that it contacts the displaceable tissues at the proposed posterior palatal seal area.
Verify the tray extension intraorally. Modify and correct the tray extension at the proposed posterior palatal seal area by careful inspection through the clear acrylic resin tray.
Trim the posterior border to flush with the posterior vibrating line. Perform border molding in the labial and buccal borders using low fusing modeling plastic compound
Mold posterior palatal seal area using dental impression wax.
Seat the border-molded special tray in the mouth for not less than 8 min to allow adequate time for the material to flow
Make a secondary impression with zinc oxide eugenol impression paste