Can Permanent Dental Bridges Alleviate Sensitivity from Tooth Grinding?

Can a fixed dental bridge help alleviate sensitivity caused by tooth grinding or other factors?

Hello Doctor: Recently, I have been preparing for a dental bridge between my lower left first molar and third molar, as my second molar is edentulous.
While wearing a temporary crown, I experience sensitivity and weakness in chewing with my third molar, along with pain and sensitivity to hot and cold stimuli.
During my follow-up visit, the doctor mentioned that the adhesive for the temporary bridge had come loose, which likely allowed moisture to seep in, causing the sensitivity and weakness.
I am currently trying on a permanent crown, but the issues persist.
The doctor indicated that if this continues, a root canal may be necessary.
I am concerned that the sensitivity might only be temporary.
I would like to know if the situation might improve with the permanent crown, or if a root canal is unavoidable.
Thank you!

Xiao Douzi, 40~49 year old female. Ask Date: 2022/03/11

Dr. Zeng Guanghui reply Dentistry

If temporary or permanent fixed dentures are placed after tooth grinding, but there are already symptoms of sensitivity and pain before cementation, it is advisable to perform root canal treatment first before placing the fixed dentures.
This approach helps to avoid inflammation of the dental nerve after the dentures are fixed, which would necessitate the removal of the dentures for root canal treatment later.
Dr.
Tseng Guang-Hui, Department of Dentistry, Nantou Hospital.

Reply Date: 2022/03/11

More Info

When considering whether permanent dental bridges can alleviate sensitivity resulting from tooth grinding, it's essential to understand the underlying causes of tooth sensitivity and the role of dental bridges in oral health.

Tooth sensitivity, especially in the context of grinding (bruxism), often arises from the wear and tear of enamel, exposure of dentin, or even damage to the pulp of the tooth. In your case, the sensitivity in your lower molars, particularly the third molar, could be attributed to several factors, including the loss of structural integrity due to grinding, the presence of a temporary crown, or even the condition of the adjacent teeth.

1. Understanding Tooth Sensitivity: Sensitivity can manifest as discomfort or pain when exposed to hot, cold, or sweet stimuli. This is often due to the exposure of dentin, which contains tiny tubules leading to the nerve endings in the tooth. When the enamel is worn down, these tubules become more accessible to external stimuli, leading to heightened sensitivity.

2. Role of Permanent Dental Bridges: Permanent dental bridges are designed to restore function and aesthetics by replacing missing teeth. They can provide support to the surrounding teeth and help distribute chewing forces more evenly. However, if the underlying issue of tooth sensitivity is due to pulp damage or significant enamel loss, simply placing a bridge may not resolve the sensitivity. In fact, if the tooth is already compromised, it may require additional treatment, such as root canal therapy, before a bridge can be successfully placed.

3. Temporary vs. Permanent Solutions: Temporary crowns can sometimes lead to sensitivity, especially if they are not well-fitted or if they allow moisture to penetrate, as you mentioned. If the temporary crown is causing discomfort, it may be a sign that the final bridge will also need to be carefully crafted to avoid similar issues. If the sensitivity persists even after transitioning to a permanent bridge, it may indicate that the tooth's nerve is affected, necessitating root canal treatment.

4. Consultation with Your Dentist: Given your ongoing sensitivity and the advice from your dentist regarding the potential need for a root canal, it is crucial to follow up with them. They can assess whether the sensitivity is likely to improve with the placement of a permanent bridge or if further intervention is necessary. If the tooth's pulp is inflamed or infected, root canal treatment may be the best course of action to alleviate pain and prevent further complications.

5. Preventive Measures: If bruxism is a contributing factor to your dental issues, it may be beneficial to discuss preventive measures with your dentist. This could include the use of a night guard to protect your teeth from grinding during sleep, which can help reduce sensitivity and prevent further damage.

In conclusion, while permanent dental bridges can restore function and aesthetics, they may not directly alleviate sensitivity caused by tooth grinding if the underlying dental health issues are not addressed. It's essential to work closely with your dental care provider to determine the best treatment plan tailored to your specific needs. They will be able to provide guidance on whether root canal therapy is necessary before placing a permanent bridge and how to manage your sensitivity effectively.

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