Sometimes when you need a dental crown , complications can occur. The most common time for problems is while you’re wearing a temporary crown and waiting for the permanent crown to be made by the lab. But crown complications can occur even after the permanent crown has been finished and cemented in place.
The most common problems with temporary crowns are sensitivity and sometimes pain when chewing. An ill-fitting temporary crown can cause this, but some sensitivity, especially to cold more than heat, is natural. Temporary crowns are not as thick as permanent ones, so the cold can penetrate more easily.
If the pain persists, you should talk to your dentist. It could be that the temporary crown doesn’t fit properly and is putting pressure on the tooth beneath where it shouldn’t. If the crown feels loose when you chew or even comes off, you should see your dentist immediately so that he can adjust the crown and/or cement it back into place to protect the underlying tooth.
The good news is that any problems with a temporary crown should be resolved when the permanent crown is put in place.
The most common permanent crown complications once the crowns are in place are sensitivity to heat and cold, and discomfort. This won’t happen if you’ve had a root canal in which the nerves and pulp were removed, but if the crown was put on a tooth that still has a nerve, this sensitivity can occur. Very often, the sensitivity fades after a little while, and it can help to use toothpaste like Sensodyne or other brands that are designed to lessen tooth sensitivity.
Pain when chewing with the crown is an indication that it doesn’t fit properly or that it’s mounted too high or too low (so that it’s irritating the gums). Let your dentist know if you have extreme sensitivity or pain when chewing, as there are ways he or she can correct these problems.
Dental crowns can chip or break. This is most common with the least expensive crown material, resin, but ceramic or porcelain crowns are also more prone to chipping that porcelain over metal or metal alloys. Small chips can usually just be repaired, but large chips, cracks or breaks may require the crown to be replaced.
Another possible crown complication is a loose crown . If it feels loose, you do need to see your dentist. This means that the cement holding the crown in place has somehow been at least partially washed away, and since bacteria can now get into the loose spaces it could decay the remaining tooth. If the crown comes off, the dentist must put it back on.
With porcelain-fused-to-metal crowns , a dark line can appear above the gum where the metal shows. When the crowns are on the back molars and don’t show when you smile, this is less of an issue. While these lines aren’t really crown complications, they do bother some people enough that they have all porcelain crowns made to replace the porcelain over metal variety on their front teeth.