Hidden Dental Issues: X-Ray Reveals Cavities Without Symptoms - Dentistry

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Teeth appear normal on the surface with no cavities, but X-rays reveal underlying issues?


Hello Doctor, I have no discomfort in my teeth, but during a routine check-up and X-ray, it was discovered that my lower right first molar has a cavity-like space (not at the root) that resembles a cavity.
It feels like it may be affecting the nerve, but I currently have no symptoms, and there has been no history of trauma.
The doctor tested with instruments and found that there is still sensation, indicating that the nerve is not necrotic.
The X-ray shows that the enamel of the tooth is intact, which surprised the doctor as well.
The examining dentist provided two suggestions: (1) return in 3-6 months for follow-up X-rays to decide on further action, or (2) open the tooth to see what is happening inside.

1.
What recommendations do you have for this situation?
2.
What factors should be considered when deciding between the two options of opening the tooth or not?
3.
If the cavity has indeed been absorbed, how would it typically be managed? If it is cleaned up temporarily, will it absorb again? Would a root canal still be necessary?
4.
Is there any correlation between this condition and the brain? I have been experiencing frequent pressure and pain in the back of my head recently.
Thank you, Doctor!

Feifei, 40~49 year old female. Ask Date: 2022/02/17

Dr. Lin Jiayong reply Dentistry


Hello: 1.
It is recommended to proceed cautiously (since there are currently no discomforts, after invasive or irreversible treatments, the subjective comparison before and after may be lacking, leading to overtreatment).
2.
After excavation, consideration should be given to restoring the shape and function of the tooth.
However, if the excavation goes too deep or there is significant structural loss, it may become impossible to reconstruct and finalize the treatment.
3.
If there is indeed internal or external resorption of the tooth root, it is advisable to discuss with an endodontic specialist before deciding whether to proceed with root canal treatment.
4.
Consider obtaining a CT scan of the head and neck to confirm whether there are any lesions beyond the teeth.
Sincerely, Lin Chia-Yung, Department of Dentistry, Taichung Hospital, Ministry of Health and Welfare.

Reply Date: 2022/02/17

More Info


When it comes to dental health, X-rays can reveal issues that may not be immediately apparent through physical examination alone. In your case, the discovery of a cavity-like space in your lower right first molar, despite the absence of symptoms, raises several important considerations.

1. Understanding the Situation: It's not uncommon for cavities to develop without causing immediate discomfort. The enamel may appear intact on the X-ray, but decay can still occur beneath the surface, potentially affecting the dentin or even approaching the pulp, which houses the nerves and blood vessels. The fact that your dentist tested the tooth and found it responsive indicates that the nerve is still alive, which is a positive sign. However, the presence of a cavity-like space suggests that there is some form of decay or structural compromise that needs monitoring.

2. Options for Management: The two options presented by your dentist—monitoring the tooth with follow-up X-rays or performing an exploratory procedure—each have their pros and cons.
- Monitoring: This approach allows for observation of any changes over time. If the cavity remains stable and does not progress, it may be possible to avoid invasive treatment. However, the downside is that if the decay progresses unnoticed, it could lead to more serious issues, including the need for root canal treatment or extraction.


- Exploratory Procedure: This option involves drilling into the tooth to directly assess the condition of the interior. This can provide immediate information about the extent of decay and allow for treatment if necessary. However, it is invasive and may lead to further complications if the tooth structure is compromised or if the decay is more extensive than anticipated.

3. If Decay is Found: Should the exploratory procedure reveal significant decay, the treatment will depend on the extent of the damage. If the decay has reached the pulp, a root canal may be necessary to remove the infected tissue and save the tooth. If the decay is limited, it may simply require filling.
- Regarding the possibility of the tooth "self-healing," it is important to note that while early-stage decay can sometimes be remineralized through good oral hygiene and fluoride treatments, once decay has progressed to a certain point, it cannot reverse itself. Therefore, if the decay is significant, intervention will be necessary.

4. Connection to Other Symptoms: Your mention of experiencing headaches or a feeling of pressure in the back of your head raises a separate concern. While dental issues can sometimes lead to referred pain or discomfort in other areas, such as the jaw or head, it is crucial to consider other potential causes for your headaches. These could range from tension headaches to sinus issues or even neurological concerns. It would be wise to discuss these symptoms with your healthcare provider to rule out any serious conditions.

In summary, the best course of action depends on your comfort level with the risks and benefits of each option. If you choose to monitor, ensure that you maintain regular dental check-ups and communicate any changes in symptoms. If you opt for the exploratory procedure, be prepared for the possibility of further treatment based on the findings. Additionally, do not hesitate to seek further evaluation for your headaches, as they may or may not be related to your dental health. Regular communication with your dentist and healthcare provider is key to managing your overall health effectively.

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