Adorbond CV metal-ceramic alloy on the cobalt basis in form of circular blank, diameter 98.5mm, up from 12mm with step
ADORBOND CV Blank is a dental cobalt-based metal-ceramic alloy. ADORBOND CV Blank is free of nickel, cadmium, beryllium and lead and complies with EN ISO 22674 type 4 for applications with thin cross-sections which are vulnerable to very high pressure, e.g. removable partial dentures, clasps, thin veneered single crowns, fixed full-arch dentures or bridges with small cross-sections, webs, reinforcement and implant-supported superstructures.
User manual Bonding alloy
|Composition wi||Technical specifications (normative index, condition milled/bond)|
|Co||%||63,0||Density ϱ||g · cm-3||8,2|
|Cr||%||29,0||Vickers hardness||HV 10||330|
|Mo||%||5,8||Linear coefficient of thermal expansion α 25 - 500 °C||10-6·K-1||14,2|
|Fe,Nb,Mn||%||< 1||Linear coefficient of thermal expansion α 20 – 600 °C||10-6·K-1||14,4|
|Melting interval TS – TL||°C||1290-1370|
|Highest recommended bonding temperature TBr,max||°C||980|
|0,2-% Yield strength Rp 0,2||MPa||610|
|Elastic modulus E||GPa||200|
|Elongation at break A5||%||6,5|
The design is carried out with suitable CAD software, taking into account the standards of dental technology. Avoid wall thicknesses less than 0.35 mm for the CAD model. Increase the wall thickness at critical points. The connector is created as strong and high as possible (height: min. 3.5 mm, width: min. 2.5 mm).
Please use suitable tools and cutting data according to the manufacturer's instructions of the dental milling machine.
Firing the ceramic after framework production
The commercially available normal-fusing bonding ceramics for cobalt bonding alloys with a suitable coefficient of thermal expansion (CTE) can be used. Please observe the corresponding working instructions and the information provided by the ceramic manufacturer regarding the cooling rate after firing. After the framework is made:
1. Separate the connector and do the finishing work. Carbide cutters are recommended for this.
2. Blast the framework surface in a stylus sandblaster with 100 mm or 250 mm aluminium oxide.
3. Clean the framework either with distilled water in an ultrasonic cleaner or with degreasing agent ethyl acetate.
4. Oxide firing (optional for checking the surface) should be about 5 min at approx. 960 °C under vacuum. Always sandblast the oxide layer again after firing and degrease.
Note: cleanliness of the surface is the best protection against bubbles in the ceramic.
5. Apply a thin layer of Washbrand, fire only the second base coat for an even coverage.
Always let paste opaque dry for 5-10 minutes at 600°C before heating.
6. Ceramic firing and cooling according to the manufacturer’s instructions.
7. In case a long-term cooling is necessary, carry out a cooling phase to approx. 750 °C after each dentine, correction and glaze firing.
After firing the ceramic, rubberize unveneered framework parts and polish to a high gloss with a polishing paste for dental alloys or with rotating polishing tools.
Soldering and welding
Soldering before firing with the ADORBOND CC-Lot and high-temperature flux. The width of the solder gap should be 0.05-0.2 mm. Laser welding with the ADORBOND CC-Laserdraht.