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Removable
Dentist lacking in removable knowledge
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<blockquote data-quote="JMN" data-source="post: 334718" data-attributes="member: 8469"><p>If you know what I'm telling you, forgive me. I'd rather double up on things than overlook somethign that could help you.</p><p></p><p>For item 2 </p><p></p><p>The simple fact is these things are near never cleaned as they are supposed to be cleaned as frequently as they are to be cleaned. </p><p></p><p>Also, with flexibles there will always be an unsealed gap between the tooth and the base as the tooth will not chemically bond to Nylon (Valplast/TCS) or to Acetyl Resin (Snow Rock/Flexite). This lack of chemical bond means that anything which decides to move in at the thin gap between the base and the tooth can get there and stay there. This is the cause of the black line effect around denture teeth on flexibles and poorly maintained dentures. The black line is bacterial colonies, their dead, and the food they were shipped on board the SS Saliva.</p><p></p><p>With any flexible or poured prosthetic there are tiny little channels drilled through the teeth called 'diatorics' and the base material flows through that hole causing mechanical retention of the tooth.</p><p></p><p>This is also why the teeth will, after being worn down to or past the diatoric, just pop off of the base. In flexibles it is the only way to retain. In poured denture base material the technician can break the glaze of the denture tooth to get a mild chemical bond and assist retention.</p><p></p><p>Poured acrylic is generally a (MMA Methyl MethAcrylate) vs most non-poured being a PMMA (PolyMethylMthacrylate). MMAs have less bond and weaker bond to other materials where PMMA is what you generally think of which bonds to the teeth strongly enough they should never release without fracturing off.</p><p></p><p>There is a special cleaner that is a powder and wipes set available for these, but it's a specialty thing made by the flexible makers. If someone doesn't come up with the name of it off the top of their head, I'll go digging later.</p></blockquote><p></p>
[QUOTE="JMN, post: 334718, member: 8469"] If you know what I'm telling you, forgive me. I'd rather double up on things than overlook somethign that could help you. For item 2 The simple fact is these things are near never cleaned as they are supposed to be cleaned as frequently as they are to be cleaned. Also, with flexibles there will always be an unsealed gap between the tooth and the base as the tooth will not chemically bond to Nylon (Valplast/TCS) or to Acetyl Resin (Snow Rock/Flexite). This lack of chemical bond means that anything which decides to move in at the thin gap between the base and the tooth can get there and stay there. This is the cause of the black line effect around denture teeth on flexibles and poorly maintained dentures. The black line is bacterial colonies, their dead, and the food they were shipped on board the SS Saliva. With any flexible or poured prosthetic there are tiny little channels drilled through the teeth called 'diatorics' and the base material flows through that hole causing mechanical retention of the tooth. This is also why the teeth will, after being worn down to or past the diatoric, just pop off of the base. In flexibles it is the only way to retain. In poured denture base material the technician can break the glaze of the denture tooth to get a mild chemical bond and assist retention. Poured acrylic is generally a (MMA Methyl MethAcrylate) vs most non-poured being a PMMA (PolyMethylMthacrylate). MMAs have less bond and weaker bond to other materials where PMMA is what you generally think of which bonds to the teeth strongly enough they should never release without fracturing off. There is a special cleaner that is a powder and wipes set available for these, but it's a specialty thing made by the flexible makers. If someone doesn't come up with the name of it off the top of their head, I'll go digging later. [/QUOTE]
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