This innovative nanoceramic is so versatile, it can be used for any permanent, adhesive, single-tooth restorations including crowns, crowns over implants, inlays, onlays and veneers.

When esthetic expectations are high and it is important that the restorations match surrounding natural dentition or other existing restorations.

Do not use hydrofluoric acid (HF) etching, and do not use phosphoric acid to clean the restoration.

1. Inspect the design of the restoration to verify a tight fit with minimal cement gap.
2. Clean the polished restoration in an ultrasonic cleaner or steam cleaner.
3. Blow dry the restoration gently with an air syringe.
4. Trial fit the restoration.
5. Adjust the restoration if needed.
6. Finish and polish the restoration.
7. Sandblast / air abrade the bonding surface with aluminum oxide
(Al203) <50μm at 2 bars (30 psi).

Clean the restoration with alcohol and dry. Verify that the surface is free of contamination, including milling debris, milling fluids, saliva, grease, acetone, fit checker, etc.

Bond the restoration to the tooth with a light or dual-cured adhesive resin cement. Depending on cement, apply the appropriate primer or bonding agents. If no primer is recommended, apply silane to the bonding surface of the restoration according to the instructions provided with the silane.

Always follow the instructions for resin-based materials provided with the cement selected. Light-curing should be used with thin veneers as dual-curing composites may cause a slight yellowing after curing. A microbrush glued to the veneer or a stick (adhesive) can be used as a retention tool. Fixing the veneer with a finger allows more uniform distribution of pressure during the adhesive cementation.

Adding-on to Restorations

Directions for Build-up or Adding-on to Restorations: You can make additions and repairs to Crystal® Ultra restorations with methacrylate-based light-cured restoratives. Restorations made from Crystal® Ultra must not be reworked with tungsten carbide tools as such instruments may damage the material. Use only diamond coated milling tools or special polishing tools desired for hybrid ceramic-resin materials. When reworking, use water and exert only slight pressure. This material should not be fired under any circumstances during processing, finishing or build-up/add-on.

Build-up or Add-on guidelines are as follows:

1. Extraorally: Roughen the site to be added to with a coarse diamond, stone, or air abrade (sandblast with 50μm aluminum oxide). Clean the restoration in an ultra-sonic cleaner with normal detergent.
2. Intraorally: Roughen site to be added to with a coarse diamond, stone or intraoral air abrasion unit. Rinse and clean the prepped site, then dry.
3. Brush on Scotchbond Universal Adhesive to the roughened area for 20 seconds and gently blow dry for 5 seconds.
4. Use a Light-cure adhesive for 10 seconds.
5. Apply methacrylate-based light-cured restorative and light-cure according to the instructions for use.
6. Shape and smooth the addition using a medium wheel or diamond impregnated rubber wheel such as Dialite™.
7. Polish using the appropriate steps in the Restorative Finishing section above.

Important Note: Since dust is formed when grinding dental ceramic products, always wear a face mask or grind when wet. Use an extraction unit in the laboratory.

• D2740 Crown – Porcelain/Ceramic Substrate
• D6245 Pontic Porcelain/Ceramic
• D6740 Abutment Crown Porcelain/Ceramic