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Pro and Con: Cold & Thermoplastic Polymerization
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<blockquote data-quote="rhicks3302" data-source="post: 50585" data-attributes="member: 3061"><p>We've used Ivocap for 25 years. ( I bought my first system from Degussa). The pre-mixed capsules means that my technicians never have to handle/mix acrylic and the polymer/monomer ratio is consistent. Any closed-flask injection system virtually eliminates open bites. Ivocap is no different. </p><p></p><p>Ivocap cures in boiling water. The injector remains on the flask assembly during the curing cycle providing a constant 80psi on the acrylic capsule. As the acrylic cures, it shrinks, drawing new acrylic from the capsule, compensating for the shrinkage. I think this makes the finished product ultra-dense. If you get microcracks in an Ivocap denture, its waxed too thin. The cooling cycle is aprox 25 mins in tap water. </p><p></p><p>My boilout unit is from Kavo and it's about as automatic as a boilout system can be.</p><p></p><p>I don't begin to understand the chemistry involved here. My head was close to exploding reading some of the earlier posts<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> Bottom line:No denture cracks during divesting. I don't need to spot grind the occlusion after processing. Teeth don't pop off and my good docs(good impressions) think an Ivocap denture fits better. </p><p></p><p>I'm the kind of guy that if someone showed me a better processing sytem, I be on it like a cop on a donut. No one has yet. 25 years of success with Ivocap doesn't lie.</p></blockquote><p></p>
[QUOTE="rhicks3302, post: 50585, member: 3061"] We've used Ivocap for 25 years. ( I bought my first system from Degussa). The pre-mixed capsules means that my technicians never have to handle/mix acrylic and the polymer/monomer ratio is consistent. Any closed-flask injection system virtually eliminates open bites. Ivocap is no different. Ivocap cures in boiling water. The injector remains on the flask assembly during the curing cycle providing a constant 80psi on the acrylic capsule. As the acrylic cures, it shrinks, drawing new acrylic from the capsule, compensating for the shrinkage. I think this makes the finished product ultra-dense. If you get microcracks in an Ivocap denture, its waxed too thin. The cooling cycle is aprox 25 mins in tap water. My boilout unit is from Kavo and it's about as automatic as a boilout system can be. I don't begin to understand the chemistry involved here. My head was close to exploding reading some of the earlier posts:) Bottom line:No denture cracks during divesting. I don't need to spot grind the occlusion after processing. Teeth don't pop off and my good docs(good impressions) think an Ivocap denture fits better. I'm the kind of guy that if someone showed me a better processing sytem, I be on it like a cop on a donut. No one has yet. 25 years of success with Ivocap doesn't lie. [/QUOTE]
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Pro and Con: Cold & Thermoplastic Polymerization
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