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Chrome Cobalt Bonding Agent
 
 
 Information Sheet
 MSDS
Pre-opaque that allows porcelain to be fired onto chrome cobalt & non-precious alloys.
Prevents metal oxides from chrome cobalt alloys, non-precious and semi-precious alloys.
Results in an excellent ceramic bond while retaining the original shade of the porcelain.
As it is a ceramic material, it bonds extremely well with opaques.
A layer of 10-20 microns is sufficient. No dark margins, even close to metal collars.
Compensates for discrepancies between the coefficients of expansion of porcelain and metal.
Can be applied without using any extra procedures or equipment.
 
 
Chrome Cobalt Bonding Agent
8 ml #52000321 $93.00
39 ml #52000320 $361.10
       

Low Cost
By bonding porcelain directly to chrome cobalt castings you can save 90% of the cost of your metal. No special preparation is necessary. Apply the microfine ceramic bonding agent directly to the clean sand-blasted surface of the casting.
New Possibilities
Chrome cobalt bonding agent enables you to bond directly onto your casting; it is therefore ideal for those areas which are most difficult to treat: bars, attachments and minor imperfections caused by abnormalities of the occlusion. For the first time it is possible to cast a framework in one piece complete with its attachments and then apply porcelain crowns & veneers.
Bonding
The microfine layer of bonding material ensures a perfect bond between the porcelain and chrome-cobalt. The agent effectively occludes any unwanted metallic oxides so there is no discoloration even after several firings.
Instructions
 
 
Chrome Cobalt Bonding Agent Instructions
1. Pre-treating the metal coping:
After trimming and finishing the coping, sandblast it. Following this, the coping should either be boiled for 10 minutes in distilled water or thoroughly steam cleaned. At this stage the coping should only be held with tweezers. The coping must be thoroughly dried before the chrome cobalt bonding agent is applied.
2. Applying the bonding agent
Mix the chrome cobalt bonding agent into a thin consistency using distilled water. Apply one masking coat of chrome cobalt bonding agent with a staining brush. While doing so, go over the metal/porcelain junctures to avoid discolorations in the border zones.
Important:
Chrome cobalt bonding agent can be mixed only once. Should the mix dry out, it is no longer suitable for use.
3. Firing the chrome cobalt bonding agent
May vary according to individual furnaces.
Recommended values:
Initial Temperature: 650ºC.
Final Temperature: 980ºC in vacuum.
Rate of Temperature increase: 55ºC per minute.
Once the final temperature has been reached, remove the coping from the furnace. The coping should now have a yellow or golden yellowish appearance. At this stage, the opaque can be applied, according to the porcelain manufacturer’s instructions.
Troubleshooting
 
 
Cracks in the chrome cobalt bonding agent:
Consistency or layer too thick. Sand-blast and reapply properly.
Blisters in the chrome cobalt bonding agent:
We recommend degassing the coping before the bonding agent is fired, by heating to 980ºC in vacuum and holding for 10 minutes.
Green/Black spots:
Either the bonding agent was mixed too thinly, the coping was moist or greasy or dried out material was re-used.
Microanalysis of the porcelain content
Since 1982, many dental laboratories have successfully worked with our chrome cobalt bonding system. Despite this, we recommend testing the bond on a sprue button made from your chrome cobalt alloy. Poorly processed alloys can also lead to defects. Often alloys are overheated and burnt during casting.
Cracks in the porcelain:
Can occur if the metal coping is disproportionately small in relation to the volume of the porcelain or if the metal connectors are defective. Should a reddish-brown layer appear instead of a yellow one, then the alloy is unsuitable. Simply use another commercially available chrome cobalt alloy.
To date, only three alloys have been proven unsuitable : Crutanium, Crystalloy and Ticonium.
 
 
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