Dental crown needs replaced after 1 year...is this usual?

Why would there be bad decay and need to replace a crown after 1-1 1/2 years? Would you just have it pulled and deal with the chewing problem? I have a dull tooth ache. Three back teeth are bad. Two had crowns in 2005 and the very back one has to be pulled. No dental insurance.

Dental crown needs replaced after 1 year...is this usual?
HELLO,


THE SIMPLE TRUTH IS THAT A CROWN SHOULD LAST LONGER THAN THAT. WITH PROPER CARE, A CROWN CAN LAST MANY DECADES.


I'VE HAD SOME PATIENTS TELL ME THEY'VE HAD A PARTICULAR CROWN FOR 25 OR 30 YEARS.


FLOSSING IS A KEY BECAUSE THE EDGE, AKA MARGIN, CAN DEVELOP DECAY UNDERNEATH IF NOT KEPT CLEAN.


THEN MAYBE THE CROWN WAS INADEQUATELY MADE AND CEMENTED WITH AN OPEN MARGIN?
Reply:they don't have to be replaced if you don't want to or can't afford it ===also have you tried a dental school?
Reply:it is possible that some moisture got underneath the crown causing decay, due to improper sealing. Its better to have a crown in place so it helps your other teeth stay in place. when there is too much spacing, your teeth can move around and make you even more prone to decay.





but, if you cant afford it?.....
Reply:If you are correct and there is bad decay under and around the crown, and it is only 1 1/2 years old, then I would question the dentist who placed the crown as to why. Highly unusual for this to happen with a properly made crown.


Extraction is an alternative if you can't afford to restore the teeth. You might consider getting a prosthetic to replace the teeth, though.
Reply:Crowns


A crown can make your tooth stronger and improve its appearance.


It can cover and support a tooth with a large filling when there isn't enough tooth left. It can be used to attach a bridge, protect a weak tooth from breaking or restore one that's already broken. A crown is a good way to cover teeth that are discolored or badly shaped. It's also used to cover a dental implant.


If your dentist recommends a crown, it's probably to correct one of these conditions. Your dentist's primary concern, like yours, is helping you keep your teeth healthy and your smile bright -- literally, your crowning glory.


Crowns are usually composed of porcelain. All-porcelain (ceramic) restorations are particularly desirable because their color and translucency mimic natural tooth enamel.








All-porcelain restorations require a minimum of two visits and possibly more. The restorations are prone to fracture when placed under tension or on impact. The strength of this type of restoration depends on an adequate thickness of porcelain and the ability to be bonded to the underlying tooth. They are highly resistant to wear but the porcelain can quickly wear opposing teeth if the porcelain surface becomes rough.


Another type of restoration is porcelain-fused-to-metal, which provides strength to a crown or bridge. These restorations are very strong and durable.


The combination of porcelain bonded to a supporting structure of metal creates a stronger restoration than porcelain used alone. More of the existing tooth must be removed to accommodate the restoration. Although they are highly resistant to wear, porcelain restorations can wear opposing natural teeth if the porcelain becomes rough. There may be some initial discomfort to hot and cold. While porcelain-fused-to-metal restorations are highly biocompatible, some patients may show an allergic sensitivity to some types of metals used in the restoration.


You may wish to read a good article called "Fillings Get Smaller…and Smaller" you can find it at:


http://www.san-diego-dentist.us/san-dieg...





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Reply:It is VERY unusual....mark that... RARE for a crown to be decayed after such a very short time unless you have atrocious dental hygiene. I might question as to whether they were correctly done in the first place if you have been taking care of your mouth. If the margins of the crowns weren't sealed or were faulty, or perhaps caries [decay] was not removed initially, they would decay like this You really should get a second opinion on this for sure as I've been practicing a very long time and have never seen anything like what you describe unless one of the above took place [in another office....not mine].