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Some new Cerecs are composite, contain Bisphenol-A
 

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Published: 17 years ago
 

Some new Cerecs are composite, contain Bisphenol-A


For those looking into indirect Cerec fillings or are concerned with estrogenic composite materials, be aware of exactly what kind of Cerecs you are getting. Some new Cerecs are made of the same stuff that direct composite fillings are made of, bisphenol-A plastic. I hope this is fully disclosed by dentists, and patients are charged less than regular Cerecs. Why pay for expensive "Cerecs" if they are pretty much composites? Regardless of whether or not this product is any good, there may be potential abuse with full disclosure and how it is marketed by dentists:


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"The new resin-based block from 3M

The new 3M Paradigm block for CEREC is here! This has been a much-anticipated product introduction in the CEREC world because of 3M's reputation for excellence. Nevertheless, many in the CEREC community have been skeptical about a block made primarily from 3M's popular Z100 composite. After all, why use a composite based material when we have such excellent ceramics (VITA, ProCAD) at our disposal?
However, reading the flexural and compressive strength charts shows these "resin" blocks should hold up at least as well as our beloved ceramic blocks. Moreover, the block more closely resembles ceramic in it's physical description than resin. Read what 3M says:

"3M™ Paradigm™ MZ100 Block for CEREC® is made from 3M™ Z100™ Restorative Material. Paradigm MZ100 block material contains 85 wt% ultrafine zirconia-silica ceramic particles that reinforce a highly crosslinked polymeric matrix. The polymer matrix consists of bisGMA (Bisphenol A diglycidyl ether dimethacrylate) and TEGDMA (tri[ethylene glycol] dimethacrylate), and employs a patented ternary initiator system."




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For those looking into indirect Cerec fillings, be aware of exactly what kind you are getting. Some new Cerecs are made of the same stuff that direct composite fillings are made of, bisphenol-A. I hope this is fully disclosed by dentists, and is less expensive than regular Cerecs. Why pay for expensive "Cerecs" if they are pretty much composites?


--------------------------------------------------------------
The new 3M Paradigm block for CEREC is here! This has been a much-anticipated product introduction in the CEREC world because of 3M's reputation for excellence. Nevertheless, many in the CEREC community have been skeptical about a block made primarily from 3M's popular Z100 composite. After all, why use a composite based material when we have such excellent ceramics (VITA, ProCAD) at our disposal?
However, reading the flexural and compressive strength charts shows these "resin" blocks should hold up at least as well as our beloved ceramic blocks. Moreover, the block more closely resembles ceramic in it's physical description than resin. Read what 3M says:

The new resin-based block from 3M

"3M™ Paradigm™ MZ100 Block for CEREC® is made from 3M™ Z100™ Restorative Material. Paradigm MZ100 block material contains 85 wt% ultrafine zirconia-silica ceramic particles that reinforce a highly crosslinked polymeric matrix. The polymer matrix consists of bisGMA (Bisphenol A diglycidyl ether dimethacrylate) and TEGDMA (tri[ethylene glycol] dimethacrylate), and employs a patented ternary initiator system."

http://www.planetcerec.com/products/blocks.shtml

 

 
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