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Prismatik ThinPress™
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Introduction
Prismatik ThinPress Technique
Figure #1 Pour master impression and block out undercuts or voids. Carefully remove stone to expose the margins and mark with red pencil.
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Figure #2
Die spacer is only utilized on sharp line angles. Paint the teeth with die lube and use prefabricated anterior shells or hand waxing to contour the veneer.
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Figure #3
After waxing to full contour, remove the wax-up to ensure that no areas are less than 0.3 mm. Handle the wax-up carefully to avoid distortion or open margins.
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Figure #4
Apply a small amount of sticky wax to the end of a round sprue and attach it to the incisal as shown. Ideal sprue length is 8 mm.
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Figure #5
The veneers should angle toward the outside of the ring with the margins directed toward the outer walls. Mark the ingot shade on the sprue former and invest.
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Figure #6
After burnout is complete, add the ThinPress ingots and plunger into the sprue hole and place the investment ring into a pressing oven.
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Figure #7
After cooling, remove the top half of the investment and sandblast with 25-micron glass beads to eliminate all investment from the veneers.
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Figure #8
Cut veneers from sprue, keeping the area wet to avoid heat fractures. Fit the veneers and carefully sandblast all surfaces to remove surface contaminants.
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Figure #9
Situations such as voids, open contacts and under-contoured areas can be repaired using the appropriate ThinPress Correction Powders.
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Figure #10
When the veneers require more incisal translucency and have adequate space, opal incisal layering powders can be used after cutback. Using the prescribed stump shade, examine the veneer alongside the requested shade tab. If staining is indicated, apply stain as needed to match the shade tab.
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Figure #11
When the final esthetics are achieved, they can be polished and should be etched with a ceramic etching gel for effective bonding results.
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