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Lab talk, the good, the bad, and the ugly
Zirconium
Zirconia degrading in the oral environment
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<blockquote data-quote="Patrick Coon" data-source="post: 248861" data-attributes="member: 11366"><p>He is referring to Low Temperature Degradation (LTD). This was a phenomenon with older (1st gen) zirconias that when exposed to a warm, wet environment they would break down over time.</p><p></p><p>Newer zirconias have been developed to reduce this effect. Can it still happen, yes, but is much less likely. </p><p></p><p>The other thing to consider is, how long do you consider the the lifespan of a restoration? I believe for insurance purposes it is 5 years. I personally would consider it longer (10 years) depending on the patient's oral hygiene. In these cases the 5-10 gear span would be acceptable anyways. But this is not necessarily the case.</p></blockquote><p></p>
[QUOTE="Patrick Coon, post: 248861, member: 11366"] He is referring to Low Temperature Degradation (LTD). This was a phenomenon with older (1st gen) zirconias that when exposed to a warm, wet environment they would break down over time. Newer zirconias have been developed to reduce this effect. Can it still happen, yes, but is much less likely. The other thing to consider is, how long do you consider the the lifespan of a restoration? I believe for insurance purposes it is 5 years. I personally would consider it longer (10 years) depending on the patient's oral hygiene. In these cases the 5-10 gear span would be acceptable anyways. But this is not necessarily the case. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Zirconium
Zirconia degrading in the oral environment
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