Tooth Decay After Getting Dental Crowns: What You Need to Know - Dentistry

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After getting braces, there is a ring of cavities between the teeth and gums?


Hello! About 10 years ago, I had crowns placed on the second-to-last teeth on both sides of my lower jaw (the nerves were already treated).
After the crowns were placed, I noticed a grayish area between my gums and teeth.
I inquired about this at the Banqiao Jiepin Dental Clinic, where I received the response that it is normal for the gums to appear slightly black or gray after getting crowns (both sides where I had the crowns placed exhibited the same condition).
I have been regularly returning to the same clinic for dental cleanings, check-ups, and cavity fillings (but I did not see the same dentist each time due to their high volume of patients).
However, during my cleaning yesterday, the dentist informed me that the black areas between my gums and teeth on those two teeth are actually deep cavities.
I was surprised that previous dentists did not notice this, especially since I have been consistently getting cleanings.
Now that the warranty period has expired after two years, I would need to pay the full amount again for any necessary procedures.
I would like to ask Dr.
Zhang about my current situation: 1.
For the teeth that had the nerves treated and were crowned, if I do not address this issue immediately, will the entire tooth deteriorate? (I was surprised they told me I could go home and think about it and decide during my next cleaning.) 2.
The right side was not switched to a permanent adhesive because the temporary adhesive was too strong to remove (they said to wait until it falls off to replace it).
Could this be a reason for the more severe decay compared to the left side? 3.
Should I choose to redo the crowns or consider dental implants? I hope you can provide your professional opinion.
Thank you!

bark, 20~29 year old female. Ask Date: 2015/08/18

Dr. Zhang Xiangyuan reply Dentistry


Dear online user: Based on your description, it is advisable to have a dentist evaluate the decayed tooth as soon as possible to determine whether it can be filled or if the crown needs to be removed for further assessment.
If the tooth can be preserved, please have the dentist treat and retain it.
Dental implants are considered a treatment option only when the tooth cannot be saved and must be extracted.
If the temporarily bonded tooth is functioning normally, it is recommended to have the dentist secure the bonding.
Thank you for your inquiry.

Reply Date: 2015/08/18

More Info


Tooth decay after getting dental crowns can be a significant concern, especially when it involves previously treated teeth, such as those that have undergone root canal therapy. Your situation raises several important points that need to be addressed to ensure your oral health is maintained.

1. Risk of Tooth Loss: If you have deep decay between the crown and the gum line, it is crucial to address it promptly. Ignoring this issue can lead to further decay, which may compromise the structural integrity of the tooth. In severe cases, this could result in the need for extraction. The fact that your dentist suggested you could "think about it" before making a decision is concerning, as it may indicate a lack of urgency in addressing a potentially serious issue. It is advisable to seek a second opinion from another dental professional who can assess the situation more critically.

2. Temporary Adhesive Concerns: The use of a temporary adhesive instead of a permanent one can indeed contribute to the problem. Temporary adhesives are designed for short-term use and may not provide the same level of sealing as permanent materials. This can allow bacteria to infiltrate the margins of the crown, leading to decay. If the temporary adhesive failed to hold the crown securely, it could have created a space for food particles and bacteria to accumulate, exacerbating the decay process. This is particularly relevant if the right side of your mouth has experienced more severe decay compared to the left.

3. Treatment Options: Given your current situation, you have a couple of options to consider. If the decay is not too extensive and the tooth structure is still sound, it may be possible to remove the existing crown, treat the decay, and then place a new crown. However, if the decay is extensive and has compromised the tooth significantly, dental implants might be a more suitable long-term solution. Implants provide a stable foundation for replacement teeth and do not rely on the remaining tooth structure, which can be beneficial if the tooth is at risk of further decay or fracture.


Additional Considerations
- Regular Dental Visits: It’s essential to maintain regular dental check-ups, especially after receiving crowns or other restorative work. This allows for early detection of potential issues before they escalate into more significant problems.

- Oral Hygiene Practices: After getting crowns, it is vital to maintain excellent oral hygiene. This includes brushing twice a day with fluoride toothpaste, flossing daily, and possibly using an antibacterial mouthwash to reduce plaque buildup around the crown margins.

- Dietary Choices: Be mindful of your diet, as sugary and acidic foods can contribute to tooth decay. Opt for a balanced diet rich in vitamins and minerals that support dental health.

- Communication with Your Dentist: If you feel uncertain about the treatment plan or the advice given, do not hesitate to ask questions or seek clarification. A good dentist will be willing to explain the rationale behind their recommendations and help you understand your options.

In conclusion, it is crucial to address the decay around your crowns as soon as possible to prevent further complications. Whether you choose to redo the crowns or consider implants, ensure that you are comfortable with your decision and that it aligns with your long-term dental health goals. Seeking a second opinion may provide you with additional insights and options for your treatment.

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