Sensitivity After Root Canal: Resin vs. Silver Fillings

Q: Sensitivity After Root Canal: Resin vs. Silver Fillings

Hello： If you wish to use silver powder for filling, you can directly ask your dentist to remove the resin and replace it with silver powder (the National Health Insurance covers silver powder fillings). <br>Additionally, periodontal issues are rarely caused solely by an allergy

Root canal treatment silver powder

When I was younger, my cavities were filled with silver amalgam, and now, after 20-30 years, I have undergone root canal treatment and had resin fillings.
After the fillings, I have been experiencing discomfort and a painful, acidic sensation.
The dentist has checked and said everything is fine, but it has been a long time, and I still haven't had a crown placed.
Currently, my dentist wants to perform periodontal treatment, which involves scaling.
Could this discomfort be due to an intolerance to the resin? My gums are very sensitive, and I'm unsure if resin is suitable for me.
Should I consider switching back to the original silver amalgam? I would greatly appreciate your guidance on this matter.

Jiaqi, 50~59 year old female. Ask Date: 2021/04/02

Dr. Lin Jiayong reply Dentistry

Hello: If you wish to use silver powder for filling, you can directly ask your dentist to remove the resin and replace it with silver powder (the National Health Insurance covers silver powder fillings).
Additionally, periodontal issues are rarely caused solely by an allergy to resin, so it is advisable not to overly associate or link the two; otherwise, the results of periodontal treatment may differ significantly from expectations.
This is a response from Dr.
Lin Chia-Yung, Department of Dentistry, Taichung Hospital, Ministry of Health and Welfare.

Reply Date: 2021/04/02

More Info

Understanding sensitivity after a root canal treatment can be quite complex, especially when comparing different filling materials like resin and silver fillings. It’s important to consider several factors that could contribute to your discomfort and sensitivity.

Firstly, it’s essential to understand that root canal treatment involves the removal of the nerve and pulp from the tooth, which can lead to changes in how the tooth responds to stimuli. After the procedure, it is not uncommon for patients to experience some level of sensitivity, especially to temperature changes. This sensitivity can be exacerbated by the type of filling material used.

Silver fillings, also known as amalgam, have been used for decades and are known for their durability and strength. However, they can expand and contract with temperature changes, which might lead to microfractures in the tooth structure over time. On the other hand, resin fillings are more aesthetic and bond well to the tooth structure, but they can sometimes lead to sensitivity, particularly if the tooth was not adequately sealed or if there is an underlying issue with the tooth or surrounding gum tissue.

In your case, the discomfort you are experiencing after the resin filling could be due to several reasons:
1. Material Reaction: Some individuals may have a sensitivity or allergic reaction to the materials used in resin fillings. If you suspect this might be the case, it’s worth discussing with your dentist the possibility of switching back to silver fillings, although this is less common nowadays due to aesthetic preferences and the potential for mercury exposure concerns.

2. Gum Health: You mentioned that your gums are sensitive. If there is gum disease or inflammation, this could contribute to the discomfort you feel. The proposed periodontal treatment (scaling and root planing) might help alleviate some of the sensitivity by addressing the underlying gum issues.

3. Incomplete Healing: After a root canal, the tooth and surrounding tissues may take time to heal. If the tooth was previously infected or had significant decay, it might take longer for it to stabilize after treatment.

4. Underlying Issues: If there are still issues with the tooth, such as a fracture or residual infection, this could lead to ongoing sensitivity. It’s crucial to have your dentist evaluate the tooth thoroughly, possibly with X-rays, to rule out any complications.

5. Temporary Crown: If you are waiting for a permanent crown, the temporary crown can sometimes lead to increased sensitivity, especially if it is not fitting well or if it is allowing bacteria to enter the tooth.

In conclusion, while it is possible that the resin filling is contributing to your discomfort, it is also essential to consider other factors such as gum health and the overall condition of the tooth. It would be advisable to have a detailed discussion with your dentist about your symptoms, the possibility of switching back to silver fillings, and the need for periodontal treatment. If your sensitivity persists, seeking a second opinion from another dental professional may also provide additional insights and treatment options.

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