Dentsply Sirona TPH Spectra ST Mode D'emploi page 10

Insufficient curing.
Inadequate polymerization.
1. Check compatibility of curing light.
2. Check curing cycle.
3. Check minimum irradiance.
4. Cure each area of each increment for the recommended curing time.
5. Check distance to surface to be cured.
3.1.7 Finishing and polishing
1. Contour the restoration using finishing burs or diamonds.
2. Use Enhance
®
3. Prior to polishing, check that surface is smooth and free of defects.
4. For achieving a very high luster of the restoration, we recommend Enhance
and polishing instruments or Prisma
For contouring, finishing, and/or polishing, follow the manufacturer's Directions for Use.
All shades of TPH Spectra
a 1 mm radio-opacity equivalent to 2.0 mm radio-opacity of aluminum. Aluminum has a radio-
opacity equivalent to that of dentin. Thus 1 mm of material having a radio-opacity equivalent to
1 mm of aluminum has a radio-opacity equivalent to that of dentin.
3.2 Indirect restoration: Inlay, onlay or veneer
3.2.1 Shade Selection
Final desired shade selection should be accomplished prior to tooth preparation. Refer to the Shade
Selection section above.
3.2.2 Preparation
Design requirements are essentially a conventional preparation. Rounding of internal angles and re-
finement of the cavo-surface margin for enhancement of enamel bonding and finishing procedures is
recommended. 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 technique.
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 accomplished by placing in Triad
Sirona) for 2 minutes. Apply second, body layer, allowing cut-back for occlusal anatomy and
final proximal contour. Repeat Triad
custom staining 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
for final 2 minute curing.
finishing devices for additional finishing.
®
ST and TPH Spectra
®
Gloss™ Regular and Extrafine polishing paste.
ST Effects restorative are radio-opaque, with
®
Light Curing. Prior to final "enamel" shade placement,
®
PoGo , finishing
® ®
Light Curing Unit (Dentsply
®
Unit
®
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