Can a tooth rot under a crown?

Can a tooth rot under a crown? Yes, a tooth can absolutely rot under a crown and it happens more often than most people think. A dental crown is like a helmet for your tooth and it protects the part of the tooth you use to chew. But the tooth underneath is still real bone and tissue and it can still get cavities. Bacteria are very tiny and they only need a microscopic gap to get inside. Once they are under the crown they eat away at the tooth and you might not even see it. This is a serious problem because the rot can hide for a long time until the tooth breaks or starts to hurt. You must know the signs and the risks so you can save your smile before it is too late.

Is it possible for a tooth to get a cavity under a dental cap?

Yes, it is very possible for a tooth to decay under a cap because the crown does not cover the entire tooth all the way to the root. The most dangerous spot is the margin and that is where the edge of the crown meets your natural tooth. If your gums pull away or if the cement starts to wash out, bacteria will move in. Data from dental researchers shows that about ten percent of crowns develop new decay within the first ten years. This happens because plaque builds up at the edge of the crown and stays there. You cannot reach inside the crown with a toothbrush so once the rot starts it moves fast. If you do not clean that edge every day the bacteria will make acid and that acid burns a hole in your tooth under the porcelain. This is why many people think their crown is fine when the tooth underneath is actually turning soft and black.

What are the main signs my tooth is rotting under a crown?

The most common sign of rot under a crown is pain when you bite down or a strange smell when you floss. You might also see a dark line near your gum or feel the crown move slightly. If the tooth is rotting it becomes weak and it cannot hold the crown steady anymore. You should look for redness in your gums around that specific tooth because your body tries to fight the infection. Another big sign is sensitivity to cold water or hot coffee. If the decay reaches the nerve inside the tooth you will feel a sharp zap or a dull ache that does not go away. Research shows that fifty percent of patients with decay under a crown do not feel any pain until the rot is very deep. This means you cannot wait for pain to tell you there is a problem. You must look for these clues every day when you brush your teeth.

How does a dentist find decay that is hidden under a crown?

Dentists use x-rays and special metal tools to find decay that hides under your crown. An x-ray shows the density of the tooth and if the tooth looks dark or thin on the picture then it means the bone is rotting away. However, metal or zirconia crowns can sometimes block the x-ray beam and hide the rot. In those cases, the dentist uses a sharp explorer tool to feel the edge of the crown. If the tool catches on a soft spot or a hole then the dentist knows the tooth is decaying. They also look for gaps where the cement has disappeared. Evidence from clinical exams proves that regular checkups find decay six months to a year before it becomes a major emergency. If your dentist finds the rot early they can often save the tooth but if they find it late you might lose the whole tooth.

Why does a tooth start to rot after a crown is put on?

A tooth starts to rot under a crown because of poor cleaning or because the crown is old and the seal has broken. Every crown is held on by a special dental glue called cement and over many years this glue can crack or dissolve. When the glue fails it leaves a tiny door open for sugar and bacteria. If you eat a lot of sticky candy or drink soda the sugar gets stuck in that gap. Bacteria eat the sugar and turn it into acid. This acid is what causes the rot. Another reason is gum disease because when your gums shrink they show the natural tooth that was once hidden. That part of the tooth does not have the same hard enamel as the top part so it rots much faster. Statistics show that people who do not floss their crowns are four times more likely to get decay under them compared to people who floss every night. You must protect that margin if you want the crown to last for twenty years.

How much does it cost to fix a rotted tooth under a crown in Australia?

Fixing a rotted tooth under a crown costs between 1500 dollars and 6500 dollars in Australia depending on how bad the damage is. If the decay is small the dentist will remove the old crown and clean the tooth and put on a new crown. A new high quality porcelain crown usually costs between 1500 and 2500 dollars. If the rot reached the nerve you will also need a root canal. A root canal for a back tooth costs between 1200 and 2000 dollars. If the tooth is too rotten to save the dentist must pull it out. Replacing a missing tooth with a dental implant is the best long term choice. In cities like Melbourne a full dental implant procedure usually costs between 4000 and 6500 dollars. This includes the metal post and the new tooth on top. While this sounds expensive it is a permanent fix that cannot rot like a natural tooth can. You can learn more about these options by visiting dental implants Melbourne to see if you are a good candidate. It is always cheaper to fix a small hole than it is to replace a whole tooth.

Can a dentist fix the rot without removing the crown?

No, a dentist cannot fix rot under a crown without removing it because they need to see exactly how much damage the bacteria caused. If a dentist tries to patch a hole at the edge of a crown the decay will just keep spreading underneath. They must take the cap off to reach all the soft and rotten parts of the tooth. Once the crown is off the dentist cleans the tooth until only hard and healthy structure remains. If there is enough healthy tooth left they will build it back up and make a brand new crown. If they leave even a tiny bit of rot behind the new crown will fail in just a few months. Data shows that patching crowns has a very high failure rate and usually leads to a tooth extraction within two years. You should always choose to replace the crown properly rather than trying to save money on a temporary patch.

What happens if I ignore a tooth rotting under my crown?

If you ignore a tooth rotting under your crown the infection will spread into your jawbone and cause a painful abscess. An abscess is a pocket of pus that forms when bacteria kill the nerve of your tooth. This can cause your face to swell and it can even make you feel very sick with a fever. The rot will eventually eat so much of the tooth that the crown will simply fall off while you are eating. At that point there is usually not enough tooth left to hold a new crown. This leads to the tooth breaking off at the gum line. Once the tooth breaks you have to get surgery to remove the roots. Clinical evidence shows that untreated tooth infections can spread to other parts of the body and cause serious health problems. You must act quickly when you feel something is wrong with your crown to avoid these dangerous outcomes.

How can I prevent my tooth from rotting under a crown?

You can prevent rot under a crown by flossing every day and using a fluoride mouthwash to strengthen the tooth at the margin. You should use an electric toothbrush because it removes more plaque from the edges of the crown than a manual brush. You must also visit your dentist every six months for a professional cleaning and a checkup. During these visits the dentist will check the seal of your crown to make sure it is still tight. Another great tip is to avoid very sticky foods like gummy bears or toffee because they can pull on the crown and break the cement seal. If you grind your teeth at night you should wear a mouthguard. Grinding puts huge pressure on the crown and can cause tiny cracks in the cement. Following these steps will keep your tooth healthy and make your crown last a very long time.

Are dental implants better than crowns if my tooth keeps rotting?

Dental implants are better than crowns for many people because an implant is made of titanium and porcelain and it cannot rot. crown is still attached to a natural tooth that can get cavities but an implant is a total replacement. If you have had multiple crowns fail on the same tooth an implant is the smartest choice. It acts like a new root in your jaw and provides a strong base for a new tooth. Implants have a success rate of over 95 percent and they can last for the rest of your life if you take care of your gums. While the upfront cost of an implant is higher it often saves you money over time because you do not have to keep paying for new crowns or root canals every few years. If your natural tooth is weak or has a lot of decay it is better to move to an implant now rather than waiting for the tooth to break and cause an emergency.

Frequently Asked Questions

How long does a dental crown usually last?
A dental crown usually lasts between 10 and 15 years. If you clean it very well and visit the dentist often it can last for 20 years or more. However the glue will eventually get old and that is when the risk of rot goes up.

Does insurance cover the cost of a new crown if the tooth is rotting?
Most dental insurance plans in Australia will help pay for a new crown if the old one is failing due to decay. They usually cover about 50 percent of the cost but you must check your specific policy limits. You might have to wait for a specific period before they pay for a replacement.

Can I feel a cavity under a crown?
You might not feel anything at first because the crown covers the sensitive part of the tooth. You usually only feel it when the decay gets very close to the nerve or when the tooth becomes weak and starts to move. This is why regular x-rays are so important.

Is it an emergency if my crown falls off?
Yes it is a dental emergency because the tooth underneath is now unprotected and very sensitive. You should call your dentist immediately. Do not try to glue it back on yourself with superglue because you can damage the tooth and make it impossible for the dentist to fix.

What is the best material for a crown to prevent rot?
Zirconia and porcelain are great materials because they are very strong and bacteria do not stick to them easily. However the material of the crown matters less than how well the crown fits your tooth. A perfect fit is the best way to keep bacteria out.

Can I use a water flosser to clean under my crown?
Yes a water flosser is excellent for cleaning the margins of a crown. It uses a stream of water to blast away food and plaque that a regular toothbrush might miss. It is a very effective tool for preventing decay in hard to reach areas.

Why does my gum look purple or black around my crown?
This can happen for two reasons. Sometimes it is just the metal from the inside of the crown showing through the gum. But it can also be a sign of decay or gum disease. If the gum is swollen or bleeds when you brush you must have a dentist check it right away.

How do I know if I need dental implants instead of a new crown?
If the decay has gone below the gum line or if the tooth is cracked in half you will need an implant. Your dentist will take an x-ray to see how much healthy bone and tooth are left. If there is not enough to hold a crown an implant is the only way to restore your bite.

Does getting a new crown hurt?
No the dentist will numb the area with a local anesthetic so you will not feel any pain. After the procedure your gum might be a little sore for a day or two but you can take basic pain medicine to feel better. It is much less painful than leaving a rotting tooth in your mouth.

Can sugar go through the porcelain of a crown?
No sugar cannot go through porcelain because it is a solid and non-porous material. The sugar and bacteria can only get in through the edges where the crown meets the tooth. This is why keeping that specific line clean is the most important part of your daily routine.