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Chrome Cobalt Bonding Agent |
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Pre-opaque that allows porcelain to be fired onto chrome cobalt & non-precious alloys. |
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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.
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Instructions |
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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. |
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Troubleshooting |
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Cracks in the chrome cobalt bonding agent:
Consistency or layer too thick. Sand-blast and
reapply properly. |
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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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Technical
Support |
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Related Products |
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INSTRUCTIONS FOR USE
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CHROME COBALT BONDING AGENT
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| Before using this product, please read and follow these
instructions carefully. |
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1. Indication Range:
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| Chrome Cobalt Bonding Agent (CKB) is a ceramic material. It is
used to form a layer between all metals and ceramic. It compensates
for different expansion coefficients between metal and ceramic and
blocks escaping metal oxides. |
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2. Processing |
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2.1 Preparation of the object: |
| After finishing, blast the object with aluminum oxide. Clean it
carefully with distilled water in the ultrasonic unit or with a
steam-blasting unit. After this process, the metal surface must not
be touched any more. |
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2.2 Mixing: |
| Mix the Chrome Cobalt Bonding Agent with distilled water to
obtain a thin consistency. Other mixing liquids are not suitable. |
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2.3 Applying the Chrome Cobalt Bonding Agent:
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Use a staining brush to apply a single covering layer of the
mixed CKB onto the metal surface. A uniform, pink color should
result on the surface.
Please note: Once the CKB has dried, it must be mixed anew! |
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2.4 Firing on the Chrome Cobalt Bonding Agent in the ceramic furnace:
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| Firing of the CKB is started at 650º C and is continued up to a
temperature of 980º C. The rate is 55º C per minute. The firing time
amounts to 6 minutes. Firing is performed under vacuum. After
firing, the frame must be immediately taken out of the furnace. The
frame should have a golden-yellow to beige color after firing. |
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2.5 Opaque firing and further processing: |
| A covering layer of opaque - which corresponds to the tooth
shade - is applied onto the fire Chrome Cobalt Bonding. A washbake
is not required. Then continue according to the instructions of the
manufacturer of the ceramic material. |
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2.6 Sources of errors and how to eliminate them: |
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Chrome Cobalt Bonding Agent has been used in numerous
laboratories since the middle of 1992. To ensure
successful application, we recommend testing the desired
alloy with CKB. |
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2.6.1 Cracks in the Chrome Cobalt Bonding Agent: |
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Too much CKB has been applied! Blast the material and
apply anew according to the instructions. |
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2.6.2 Bubbles in the Chrome Cobalt Bonding Agent: |
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Degassing of the metal is required. Blast the material
and - prior to the firing CKB anew - degas the frame
under vacuum at 980º C. |
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2.6.3 Green and/or black stains in the Chrome Cobalt Bonding Agent: |
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CKB was mixed too thinly or the frame was moist or
greasy. Stains may also result if dried CKB has been
mixed anew. Blast CKB, clean the frame and then apply
CKB anew. |
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2.6.4 Cracks in the ceramic: |
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If the Chrome Cobalt Bonding Agent displays a rust-like
brown color after firing, the alloy is not suitable.
Please use a different alloy. Up until today the
following alloys have proved to be not suitable:
Crutanium by Krupp Austenal, Crystalloy by Shofy and
Ticonium. Cracks may also result, if dried CKB has been
mixed anew since it is not ensured that the different
expansion coefficients are compensated. |
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3. Safety recommendations and hazard warnings |
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3.1 Protective clothing |
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While processing Chrome Cobalt Bonding Agent, dust mask,
safety gloves, goggles and protective clothing must be
worn. |
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3.2 To ensure safe handling of this product, the formation of dust must be avoided. |
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3.3 After skin contact: |
Immediately wash off with water and soap and rinse
thoroughly.
Normally, this product does not irritate the skin.
After eye contact: Rinse eyes carefully with running
water with eyelid open.
After ingesting: If problems persist, seek medical
attention. |
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4. Storage and durability |
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4.1 This product must be sealed well and stored dry. If proper storage is ensured, this product has almost unlimited shelf life. |
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4.2 Proper disposal: |
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Product can be disposed of with household garbage. |
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5. Further information |
The information contained in these instructions for use
is always updated according to the latest knowledge and
experience. Therefore, we recommend that you read these
instructions again before using a new package.
These instructions refer to Chrome Cobalt Bonding Agent,
Item #s 520 003 20 and 520 003 21. |
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MATERIAL SAFETY DATA SHEET
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Product Name: CHROME COBALT BONDING AGENT
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Product Code: 520 003 20, 520 003 21
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| Before using this product, please read and follow these
instructions carefully. |
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1. Composition/Information on ingredients
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Product Description/use: Ceramic material with bonding agents
and pigments.
Hazardous Substances: Pentane.
Name: CAS-No. Content Hazard Symbol Hazard Codes
Titanium dioxide 13463-67 5 - 10% None |
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2. Hazard Identification |
Special hazard warning: R 34 Causes acid burning.
R 36/37/38 Irritant to eyes, respiratory organs and
skin. Harmful effects/symptoms: itching, burning skin. |
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3. First aid procedures: |
In general: Any articles of clothing contaminated with this
product must be removed immediately.
After skin contact: Immediately flush with water and soap and rinse
thoroughly. Normally, this product does not cause irritation of the
skin.
After eye contact: Rinse eyes with lid open with running water for
several minutes.
After ingestion: If problems persist, seek medical attention. |
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4. Fire fighting procedures: |
| Suitable extinguishing media: Not applicable. This product is
non flammable. |
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5. Accidental release procedures: |
Person-related procedures: No special procedures required.
Environmental protection procedures: No special procedures required.
Cleaning/removal procedures: Wipe off with a wet cloth and dispose
with household garbage. |
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6. Storage and handling: |
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Storage: Store in well-sealed containers under dry
conditions. Handling: Avoid formation of dust. |
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7. Exposure limit and personal protective equipment |
Ingredients with working-place related limits:
CAS No.: Description Type Value Unit
13463-67-7 Titanium dioxide TLV 6F mg/m3
Additional information: The lists that were valid during
the preparation of these data sheets served as reference
documents.
Personal protective equipment:
Respiratory protection: Mechanical filter respirator.
Hand protection: Protective gloves.
Eye protection: Safety glasses.
Protection of body: Protective clothing.
Protective & hygienic measures: The usual precautions
for the handling of chemicals have to be observed. |
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8. Physical and chemical properties: |
Appearance:
Form: Powder.
Color: Pink
Odor: Odorless.
Data relevant to safety:
pH (when supplied): Not applicable.
pH for 100 g/l H2O and 20º C: Approx. 7
Flash point (º C): Not applicable.
Melting point: Approx. 800
Solubility in water: Practically insoluble. |
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9. Stability and reactivity: |
Conditions to avoid: In case of proper use, no reaction.
Materials to avoid: With acids if possible.
Hazardous decomposition products: Up to 1200º C no
decomposition products known. |
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10. Toxicological information: |
LD50/LC50 components Type Value Species
Titanium dioxide Oral > 20,000 mg/kg Rat
Dermal > 10,000 mg/kg Rabbit
Inhalatory >6.8 mg/l 4h Rat
Irritating properties: On skin; no irritant effect on
eyes (if any, possibly due to mechanical influence -
dust).
Sensitization: No sensitizing effect known.
Carcinogenic, teratogenic or mutagenic effects: No such
effects known. |
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11. Ecological information: |
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General information: Must not reach waterways or sewage
system. |
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12. Disposal consideration: |
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Product/Soiled Container: Product and soiled container
must be disposed in a suitable container and in
agreement with local and national regulations. |
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13. Export regulation |
Material designation: Non hazardous material.
Air traffic: Non hazardous material.
Marine traffic: Non hazardous material. |
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14. Regulatory information: |
Hazard symbol & identification: Not applicable.
Hazardous substances:
Hazard codes: Not applicable.
Safety codes: Not applicable. |
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15. Other information |
Data sheet completed by: Research & Development Dept. -
Bredent (Germany).
This Material Safety Data Sheet is provided by way of
guide for the use of our product and is correct to the
best of our knowledge.
However, we can't offer any guarantee as to its accuracy
or exhaustiveness. All chemicals may present unforeseen
risks and should be used with caution.
We cannot guarantee that the risks referred above are
the only risks present. The final choice of the
application of a product is thus the sole responsibility
of the user. |
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Information Sheet
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