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<blockquote data-quote="denturist-student" data-source="post: 148585" data-attributes="member: 5492"><p>Appears to be some sort of external key style of precision attachment. Try and get the doc to do a reline impression using silicone. Then do a pickup impression using a high quality alginate such as hydrogum 5.. Pour the stone right into the pickup impression. Then using the existing framework redo the acrylic.You may be able to use the existing framework if it is still stable however this style of clasp doesn't have any stress breaking which is necessary for class I and II. I did one of these for a lady who had some custom milled crowns on the lower 7's with two stabilizing implants int he 3"s region. They had drifted a bit so had no retention. I had to remake the framework with a different style of clasp... long story short is that the framework may still be okay but likely won't survive processing afterward. Those precision attachments can be very finicky during a reline. Likely the doc is seeing if you can do it because nobody else will touch it. Good luck.</p></blockquote><p></p>
[QUOTE="denturist-student, post: 148585, member: 5492"] Appears to be some sort of external key style of precision attachment. Try and get the doc to do a reline impression using silicone. Then do a pickup impression using a high quality alginate such as hydrogum 5.. Pour the stone right into the pickup impression. Then using the existing framework redo the acrylic.You may be able to use the existing framework if it is still stable however this style of clasp doesn't have any stress breaking which is necessary for class I and II. I did one of these for a lady who had some custom milled crowns on the lower 7's with two stabilizing implants int he 3"s region. They had drifted a bit so had no retention. I had to remake the framework with a different style of clasp... long story short is that the framework may still be okay but likely won't survive processing afterward. Those precision attachments can be very finicky during a reline. Likely the doc is seeing if you can do it because nobody else will touch it. Good luck. [/QUOTE]
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