Dentsply Sirona TPH Spectra ST Instrucciones De Uso página 14

Refer to adhesive and/or luting cement manufacturer's directions for
base/liner/pulp protection requirements.
3.2.3 Impression, Master Cast Fabrication
1. Make an accurate impression of the preparation.
2. Prepare master cast and articulate opposing cast per usual tech-
nique.
3.2.4 Restoration Fabrication
1. Block out any preparation undercuts present. Apply separating
medium and/or die spacer to separated die. In most cases, the
restoration may be fabricated in no more than 3 increments, each
up to 2 mm depth.
2. Apply first increment/shade, creating restoration body. Adapt to
die, staying short of margins. Recommended light curing is ac-
complished by placing in Triad
for 2 minutes. Apply second, body layer, allowing cut-back for oc-
clusal anatomy and final proximal contour. Repeat Triad
Curing. Prior to final "enamel" shade placement, custom stain-
ing with appropriate compatible stains may be accomplished per
manufacturer's instructions. Apply final layer, slightly overfilling and
covering all margins. Replace die into articulated model. Establish
all external, proximal and occlusal contacts and anatomy. Slight
lubrication of adjacent and opposing model teeth is recommended.
Cure briefly (10 seconds) with hand-held visible curing light unit to
fix contours. Remove die with restoration, place in Triad
final 2 minute curing.
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K102110-00 TPH Spectra ST +Effects_MV03.indd 12
Light Curing Unit (Dentsply Sirona)
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Light
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Unit for
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3. When removing restoration from die, it may be necessary to scrape
die stone away from restoration margins, to prevent accidental
chipping of restoration. Clean any residual die stone from restora-
tion. Carefully trim away visible flash beyond preparation margins
with acrylic bur.
4. Gently sandblast the internal surfaces with 50 µm alumina abra-
sive. Remove visibly undercut material.
5. Seat restoration onto preparation of uncut master cast, making
adjustments as needed. Check for marginal integrity and overall
fit and contour. Additional increments may be added if needed by
roughening surface and applying compatible adhesive per manu-
facturer's instructions, followed by placement and light curing as
outlined above.
3.2.5 Finishing and Polishing (laboratory)
Complete as outlined in the above Finishing and Polishing Section for
Direct Restorations.
3.2.6 Cementation
Recommended cementation technique is bonding using a resin ce-
ment. Follow adhesive and/or cement manufacturer's instructions for
prepared tooth and restoration surface pretreatments.
3.2.7 Adjusting, Finishing and Polishing (clinically)
Following cementation, make all necessary occlusal adjustments and
polish any clinically adjusted surfaces as outlined in the above Finish-
ing and Polishing Section for Direct Restorations.
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