Is it normal for a permanent crown to require “recementing”?

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It is amazing to me that everyone accepts that it is “normal” for permanent crowns to fall out and require periodic “re-cementing”.  It is not normal!  Crowns that can fall out can leak and decay.  This can result in tooth loss.  In patients who are already susceptible to decay, a tooth with a crown that repeatedly falls out will almost certainly decay.

Why do crowns fall out?  The answer lies in how the crowns were made.  The vast majority of dentists ...

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