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Cold cure techniques for relines, RPDs, and night guards
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<blockquote data-quote="denturist-student" data-source="post: 249606" data-attributes="member: 5492"><p>Well I do understand that in a pinch a cold cured reline can work....And you are right when you say the impression is an important part of the reline. I have done a lot of direct relines usually using something like a Tokoyama hard reline material....I just opened up a new clinic and likely will do some cold cured relines in a hurry. But for now will tray and stick with the rebased type of reline to replace the whole denture base....especially if the occlusion is still intact....Similar to what Kraver described in another posting. But for someone in a hurry yes perhaps a cc reline might work out well...They are advertised a lot up here....My experience with cold cured things is that people can often have an after taste that lasts quite a while with cold cured acrylic. I am certain it is because of the monomer powder ratio used... Maybe there are better acrylics than I am using. I am using Ivoclars Probase cold for now...I am also migrating away from the quickly cured heat cured...1 hour boiled...using the Diamond D acrylics to the slow cured processes at 165 degrees for eight hours mainly because a few cases I have done have turned out requiring another reline...again perhaps my technique is at fault here....Microwaved cases are the same for me....I may be doing something wrong....But there appears to be too much shrinkage in the buccal flange regions which prevents full seating at insert.....not on every case but enough to try something different....but I guess like everyone else we use the process for us that works out the best....I am still using a pvs material for reline and final impressions after hollowing out the denture intaglio by the recommended 2 mm. That is required for proper flow of material....</p></blockquote><p></p>
[QUOTE="denturist-student, post: 249606, member: 5492"] Well I do understand that in a pinch a cold cured reline can work....And you are right when you say the impression is an important part of the reline. I have done a lot of direct relines usually using something like a Tokoyama hard reline material....I just opened up a new clinic and likely will do some cold cured relines in a hurry. But for now will tray and stick with the rebased type of reline to replace the whole denture base....especially if the occlusion is still intact....Similar to what Kraver described in another posting. But for someone in a hurry yes perhaps a cc reline might work out well...They are advertised a lot up here....My experience with cold cured things is that people can often have an after taste that lasts quite a while with cold cured acrylic. I am certain it is because of the monomer powder ratio used... Maybe there are better acrylics than I am using. I am using Ivoclars Probase cold for now...I am also migrating away from the quickly cured heat cured...1 hour boiled...using the Diamond D acrylics to the slow cured processes at 165 degrees for eight hours mainly because a few cases I have done have turned out requiring another reline...again perhaps my technique is at fault here....Microwaved cases are the same for me....I may be doing something wrong....But there appears to be too much shrinkage in the buccal flange regions which prevents full seating at insert.....not on every case but enough to try something different....but I guess like everyone else we use the process for us that works out the best....I am still using a pvs material for reline and final impressions after hollowing out the denture intaglio by the recommended 2 mm. That is required for proper flow of material.... [/QUOTE]
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