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Implants
Bonding to pmma
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<blockquote data-quote="2thm8kr" data-source="post: 330774" data-attributes="member: 1367"><p>We have stopped using anything except two part acrylic on long term immediate temps. Add some mechanical retention </p><p>and blast the intaglio surface of the temps. Clean the copings well. I avoid blasting the copings since it makes the temps look a bit grey in those areas. I soak the intaglio surface with monomer for several minutes before mixing the liquid and powder. </p><p></p><p>All the bonding agents seem to work for some time on PMMA, but eventually they let go. There is a lot at stake on these types of cases. Cross arch stabilization is just as important on the first day as it is throughout the duration of the restoration. Studies are showing that even one loose screw can compromise the longevity of a large implant case. Popping a ti base or coping loose from a temp puts a lot at risk.....</p></blockquote><p></p>
[QUOTE="2thm8kr, post: 330774, member: 1367"] We have stopped using anything except two part acrylic on long term immediate temps. Add some mechanical retention and blast the intaglio surface of the temps. Clean the copings well. I avoid blasting the copings since it makes the temps look a bit grey in those areas. I soak the intaglio surface with monomer for several minutes before mixing the liquid and powder. All the bonding agents seem to work for some time on PMMA, but eventually they let go. There is a lot at stake on these types of cases. Cross arch stabilization is just as important on the first day as it is throughout the duration of the restoration. Studies are showing that even one loose screw can compromise the longevity of a large implant case. Popping a ti base or coping loose from a temp puts a lot at risk..... [/QUOTE]
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Bonding to pmma
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