Can multiple lab changes to porcelain crowns cause the porcelain to weaken and chip?
Doctor Answers 3
Normally porcelain veneers are sturdy once bonded but fragile before cementation. Expert labs and expert cosmetic dentists know how much it can be altered before it is redone. As a standard procedure in my office I would not send back work more than once for revision. Other wise I will have them redo the work.
Hope this helps.
Numerous changes to porcelain crowns can indeed weaken the porcelain, but often times when an edge chips, that can be due to an incorrect biting relationship from your upper crowns to the lower teeth. Even crowns that haven't been returned to the lab can chip when the bite isn't properly worked out.
Changes to porcelain crowns
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