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Doctor insights on: Cavity Under A Crown

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I have really bad taste in my mouth following dental work two days ago. Had a cavity under a crown. Now have temporary crown.?

I have really bad taste in my mouth following dental work two days ago. Had a cavity under a crown. Now have temporary crown.?

Bacteria/Debris: The bad taste could be from the temporary crown (acrylic), food trapping, remaining decay, or an infected tooth. Any pain? ...Read more

Dr. Heidi Fowler
6 Doctors shared insights

Crown (Definition)

The crown of a tooth is that part of the tooth on top of the root. The crown of the tooth is the part that is visible in the mouth. A crown restoration is a procedure that restores the crown of a tooth that is damaged by fracture or extensive decay by cementing a replica of the crown over a prepared tooth, and is one of the most common ...Read more


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Cavity under crown, root canal done twice! How do I stop my mouth from swelling?

Cavity under crown, root canal done twice! How do I stop my mouth from swelling?

Crown has to be out.: Any cavity or infection must be expose to air and drained, fast. A close space will lead to major problem. ...Read more

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My 3yrs old daughter fixing to have crowning for her cavities. My question is: would the crowning bother her and preventing her normal eating?

My 3yrs old daughter fixing to have crowning for her cavities. My question is: would the crowning bother her and preventing her normal eating?

No: The large cavities that she has now will bother her and prevent her from eating. Restoring this badly decayed teeth with crowns will help solve this problem and make it so she is comfortable and can eat better. To prevent future cavities you need to brush her teeth twice daily and make sure she eats healthy foods (no fruit roll ups, soda, etc.). ...Read more

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Is having 3 crowns and 8 filled cavities a lot?

Is having 3 crowns and 8 filled cavities a lot?

It is a lot: A current review of the available epidemiological data from many countries clearly indicates that there is a significant decrease in the tooth decay due to a public prevention measures. Brush first, then floss and rinse before going to bed every night, see your dentist 2 X per year. It will prevent your future dental problems. Good luck. ...Read more

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How effective is a crown for treating a cavity?

How effective is a crown for treating a cavity?

That depends: That depends on the size of the cavity. Crowns are a very effective way to treat large cavities where a lot of the tooth is missing because they cover over and protect the remaining natural tooth structure. Small to medium sized cavities do not require crowns. ...Read more

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Want to know do we normally get cavities in the hole where the crown is going?

Want to know do we normally get cavities in the hole where the crown is going?

HMMM: Not sure I understand the question however if the crown fits well and you brush and floss it can be there for decades. A crown protects a weakened tooth but does not make it impervious to decay. ...Read more

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Dental cavity crown-re;ated?

Indirectly, maybe: Question is too vague, but i'll address possibilities. If a crown is poorly designed with a gap in the fit on the tooth, a cavity could develop in gap. If cavity remains after tooth reduction for crown, it may continue to progress under crown. If a crown doesn't contact adjacent tooth well, food trap forms which creates a condition for a cavity to occur on adjacent tooth or at margin of crown. ...Read more

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Can any dentist explain if we normally get cavities in the hole where the crown is going?

Can any dentist explain if we normally get cavities in the hole where the crown is going?

No: A well fitted crown surrounds the remaining tooth structure and protects it. If you brush well and especially floss daily you reduce your risk of recurrent decay. Follow your Dentist's advice. ...Read more

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Pain in gums where crown is placed? Is that cavity or gingivitis?

Pain in gums where crown is placed? Is that cavity or gingivitis?

It is possible: A little more history about the onset and type of pain you are experiencing is necessary. If the crown has been in place for a long period of time, you could have recurrent decay in the tooth. You could also have a periodontal or gum problem. If the crown is a new crown, it could be related to irritation from the seating of the crown, possibly some residual cement, or your occlusion or bite. ...Read more

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How many cavities can one get on one tooth before having to get a crown?

How many cavities can one get on one tooth before having to get a crown?

Depends on Severity: The size and location of the cavity is the determining factor for diagnosing a crown. If your tooth is more filling than tooth, then a crown may be indicated. ...Read more

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If no dental insurance, should I put off exam for possible cavity/crown till I get it?

If no dental insurance, should I put off exam for possible cavity/crown till I get it?

Worse problems: If a person puts off having an exam they could end up having more problems with greater costs just by waiting. If a problem can be taken care of in its early state, this can decrease cost, and increase success of the restoration. ...Read more

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How long should the soreness last after a cavity filling and crown?

How long should the soreness last after a cavity filling and crown?

Depends: Fillings can be sensitive a couple of days depending upon how deep the cavity was and the type of material used. If still sensitive after 48 hours, contact your dentist. Your tooth should not be sensitive after a crown placement. The crown might be too 'high.'your dentist may need to adjust your bite and check the health of your tooth. ...Read more

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I have to replace a crown and get a filling for a cavity. Which one should I get done first?

I have to replace a crown and get a filling for a cavity. Which one should I get done first?

Both: The extent of the problem in each will determine which one is more important to do. Your own dentist can answer that question better than we can never having seen either tooth nor x-rays of them. If money is an issue consider at least having the crown removed to evaluate the tooth, and then temporized with a good fitting strong temporary crown. ...Read more

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What are the pros and cons to electively (no margin cavities) remove old porcelin fused to metal teeth crowns for new ones? Could a tooths root split?

What are the pros and cons to electively (no margin cavities) remove old porcelin fused to metal teeth crowns for new ones? Could a tooths root split?

Not likely: Of course, it's always a possibility, but root splitting is not likely, as long as when the crowns are being cut off, they are fully cut through, down to the tooth, before they are removed. Really, unless you have decay on the teeth, there is no need to remove the old crowns. Unless you don't like the look of them or the porcelain has chipped off. ...Read more

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I have two cavity holes in my front teeth, roughly how much would it cost to crown them? And what is the best natural crown type

I have two cavity holes in my front teeth, roughly how much would it cost to crown them? And what is the best natural crown type

Cavities: Without knowing the exact extent of the decay, it is hard to determine what treatment you need and what the total cost would be. Simple fillings are less expensive that root canals, posts, and crowns. That being said, since fees vary so widely from town to town and office to office, a fee quoted you over the internet is meaningless. Seek the advice of a local dentist who is going to treat you. ...Read more

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5 year old had cavity filled. Did not have to do pulpotomy, just put on a silver crown. Now his cheek is swelling. Should I be worried?

5 year old had cavity filled. Did not have to do pulpotomy, just put on a silver crown. Now his cheek is swelling. Should I be worried?

Recent work: If the work was done recently then he/she may have bit or chewed their cheek or trauma from the work. They have that tendency because they are not use to being numb. If the work was done a while ago and there is pain then you need to go back to the dentist and have it looked at. ...Read more

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13 year old has deep cavity... Dentist says she needs a root canal. Is that safe? She'd have to get a silver crown. Is it better to just pull it?

13 year old has deep cavity... Dentist says she needs a root canal. Is that safe? She'd have to get a silver crown. Is it better to just pull it?

No-no -no: If your finger was broken would you want it amputated? A root canal would preserve the tooth and keep all the other teeth in line and prevent crooked and shifting of other teeth. A missing tooth can cost more to replace than a root canal and crown. ...Read more

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Can dentist see on x-rays crowned tooth get cavity?

Can dentist see on x-rays crowned tooth get cavity?

Sometimes: If the decay is blocked by the crown, however, it will not be visible. There are other diagnostic tests available, including removing the crown, inspecting the tooth, and replacing the crown if everything is OK. If yu think you have a problem, do not delay. See your Dentist immediately before a small problem gets out of hand. ...Read more

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How far down must a tooth cavity be before a crown is no longer a proper treatment?

Near the pulp: If the cavity is in close proximity to the pulp of the tooth then in addition to a crown the tooth will likely need a root canal. If the tooth has developed a deep crack that extends below the pulp and into the root then the tooth will likely need to be extracted. ...Read more

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Not sure if you answer teeth questions but, I have a crown on my back left molar from a deep cavity. Last night it was very painful when teeth touched?

Not sure if you answer teeth questions but, I have a crown on my back left molar from a deep cavity. Last night it was very painful when teeth touched?

See dentist: It may be that you have trouble underneath the crown you are unable to see. It is possible you may have an abscess/infection or pain from a remaining nerve root. ...Read more

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Can a dentist do an onlay for a cavity close to or at the gum line (not below) with out crown lengthening? . Roots are fine though.

Can a dentist do an onlay for a cavity close to or at the gum line (not below) with out crown lengthening? . Roots are fine though.

Yes, but: The bone must not be at the same level as the tooth. Crown lengthening happens when the decay is very deep and the preparation is at the same level as the bone. Crown lengthening can also be performed to aesthetically place the gums at a better level. Sounds like you could be ok, but have your dentist show you your x-ray for clarification so you feel comfortable receiving treatment. ...Read more

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I have a small cavity under my gum line on a crowned molar & have been told that it must be extracted. Is this the only solution? Gill

Hard to say...: ... your dentist has examined the tooth and together with the help of a radiograph s/he has determined that the tooth is unrestorable. Without knowing the extent of the decay or the periodontal condition of the tooth, it is difficult to dispute the diagnosis. If you feel otherwise, then a second opinion from another dentist who can examine you would be wise. ...Read more

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Old root canal without crown now has cavity. Should I opt for crown lengthening with filling and crown or pull it and get an implant?

Old root canal without crown now has cavity. Should I opt for crown lengthening with filling and crown or pull it and get an implant?

Depends: It does depend on the strength of the tooth. Generally if a tooth has a root canal it had multiple fillings before this possibly a fracture -it is compromised already even after all the time and financial commitments of restoring, the chances of that tooth surviving 3 -5 years is not great. Then you are back to getting an implant. I try not to pay for things twice, but it is a decision between you. ...Read more

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Hot&cold sensitivity/painless throbbing on recent root canal/crowned tooth #14. Xrays taken & rc failure not indicated & no surrounding cavities! Why?

Hot&cold sensitivity/painless throbbing on recent root canal/crowned tooth #14. Xrays taken & rc failure not indicated & no surrounding cavities! Why?

Some possibilities: First, if the rct was completed and the canals were filled properly, there cannot be any cold or hot sensitivity with that tooth. One can still have throbbing if the tissues around the root of the tooth (periodontal ligament) are inflamed. 2d x-rays cannot show everything. A 3d (cbct) scan can possibly show another canal or pathology present. Sometimes these issues resolve on their own with time. ...Read more

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Assessed tooth just got pulled after 3 months of infection, my cheek is still puffy and my neck hurts, has infection spread? I had a cavity which turned into a crown, the tooth then cracked and was left open while we got the infection under control. Afte

Assessed tooth just got pulled after 3 months of infection, my cheek is still puffy and my neck hurts, has infection spread? I had a cavity which turned into a crown, the tooth then cracked and was left open while we got the infection under control. Afte

Considering: Considering how long you had the infection together with your underlying medical condition, it would suggest that you go back to the dentist who extracted the tooth. It just may be post operative swelling, but it could also be an infection that is spreading.

Please call at once. ...Read more

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How to treat a cavity under the gum line I have a small cavity under the gum, is there a way to treat this? My dentist is giving me confusing information. For example, he'll say "we cannot root canal it and set a crown" but then he'll say "we can root can

To root canal or not: In most cases a cavity under the gum line can be salvageable. Depending on how deep the cavity may go down the root under the gum line a root canal can be done. The only question will be if your dentist can be able to fit a crown on the tooth. Many dentist may suggest having a extra procedure done called "crown lengthening " which is done by a periodontist. ...Read more

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What to do about chronic sinus infections after root canal/crown. Dentist is dismissive of the problem. 2 years ago I cracked a tooth because of a deep cavity I was unaware of (that parts my responsibility) the tooth was also infected. I had a root canal

What to do about chronic sinus infections after root canal/crown. Dentist is dismissive of the problem. 2 years ago I cracked a tooth because of a deep cavity I was unaware of (that parts my responsibility) the tooth was also infected. I had a root canal

I: I would recommend getting an evaluation by a board certified oral and maxillofacial surgeon. Their training would enable them to determine if the 2 year history of sinus infections is directly related to your dental health. Obviously I am not in a position to examine you or review xrays of the teeth and sinuses, but 2 years seems a long time to have chronic sinus infections without significant oral findings other than decay. It is normal for the root tips of the upper back teeth to be close to the sinus, in fact, in many cases the roots actually protrude into the sinus. That is why these teeth can sometimes be symptomatic with sinusitis. The oms can give you an opinion as to whether the tooth should be removed or it there are other options for treatment. ...Read more

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What causes cavities?

What causes cavities?

Bacteria: Simply, bacteria in our mouths metablolize the carbohydrates that we eat (simple sugars are their favorites) and produce acid as a result of their activity. The acid dissolves the enamel, causing the decay. Eating the right foods, and brushing/flossing right afterwards, helps break the cycle. Go brush now! ...Read more

Dr. Sewa Legha
8 Doctors shared insights

Cavity (Definition)

Basically a cavity is a hole, or defect in the tooth structure. It is created by the demineralization and breakdown of tooth structure from the acid attack of ...Read more