Root Canal Treatment and Dentures: Expert Advice for Your Dental Health - Dentistry

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Root canal. Dentures?


I have four front teeth on the upper jaw, two on the left and two on the right, which underwent root canal treatment over 20 years ago but did not receive crowns.
Visually, a significant portion of them has changed color, and it is evident that the filling material occupies more than half of the tooth.
I am currently seeking treatment and may need to undergo root canal therapy again.
I would like to know if it is advisable for the same dentist to perform both the root canal treatment and the prosthetic work.
If a post is needed, at what stage would it be placed? Additionally, if there is very little tooth structure remaining, is it possible that placing a post would be ineffective and that dental implants would be necessary? My teeth have noticeably changed color, possibly due to decay, and since I had a root canal, I have not felt any pain, but the discoloration of the filling is more pronounced.
Root canal treatment involves removing the old material, and it seems that all decay must also be removed.
I am concerned that if too much is removed, I may end up with very little tooth structure left.
What are the recommended options in such a case? The waiting period for treatment is quite long, and I find myself overthinking the situation.
I hope the dentist can provide some advice for reference.

Li Qiuqiu, 30~39 year old female. Ask Date: 2021/03/02

Dr. Lin Jiayong reply Dentistry


Hello: It is advisable for the dentist performing root canal treatment and the one placing the dental prosthesis to be in the same medical facility (either the same clinic or hospital).
After completing the root canal treatment, if there are no issues after about a month, you can proceed with the placement of the post.
It is recommended that you discuss the advantages and disadvantages of this treatment plan (such as insufficient tooth structure, potential for transitioning to dental implants, etc.) with the dentist who is actually performing the treatment.
Sincerely, Dr.
Lin Chia-Yung, Department of Dentistry, Taichung Hospital, Ministry of Health and Welfare.

Reply Date: 2021/03/02

More Info


When considering root canal treatment (RCT) and the potential need for dentures, it’s essential to understand the implications of both procedures, especially in the context of your dental health history. Given that your front teeth have undergone RCT over 20 years ago without crowns, it’s not uncommon for these teeth to show signs of discoloration and structural compromise over time.
Root canal treatment involves removing the infected or damaged pulp from inside the tooth, cleaning and disinfecting the root canals, and then filling them to prevent further infection. If a significant portion of the tooth structure is compromised, as you mentioned, the tooth may require additional support, such as a post (often referred to as a "pin" or "core") to retain a crown. This post is typically placed after the root canal procedure but before the crown is fitted. The post helps to anchor the crown securely to the remaining tooth structure.

In your case, if the tooth structure is severely diminished, the effectiveness of a post may be limited. If there isn’t enough tooth structure to support a post and crown, extraction and subsequent options like dental implants may be necessary. Dental implants are often preferred in cases where the remaining tooth structure is inadequate, as they provide a strong and stable foundation for replacement teeth.

Regarding your question about whether the same dentist should perform both the root canal and the denture work, it can be beneficial to have a consistent provider for your dental care. A dentist who specializes in endodontics (root canal treatment) may be more adept at handling complex cases, while a prosthodontist (who specializes in crowns, bridges, and dentures) can provide the necessary expertise for restoring your smile. However, many general dentists are skilled in both areas, so it’s essential to communicate your needs and concerns with your provider.

As for the discoloration of your teeth, it’s crucial to address any underlying issues, such as decay, before proceeding with cosmetic treatments. If the discoloration is due to decay, the affected areas will need to be removed during the RCT process. This may lead to a situation where there is insufficient tooth structure left, necessitating further intervention.

If you find yourself in a situation where the tooth structure is minimal after treatment, your dentist may discuss several options:
1. Crown Lengthening: This procedure involves reshaping the gum and bone to expose more of the tooth structure, allowing for better crown placement.

2. Dental Implants: If the tooth cannot be saved, an implant may be the best long-term solution.

3. Bridgework: If multiple teeth are affected, a dental bridge may be an option to replace missing teeth.

It’s understandable to feel anxious about the waiting period for treatment, especially when considering the potential outcomes. Open communication with your dentist about your concerns can help alleviate some of this anxiety. They can provide a clear treatment plan, including timelines and what to expect at each stage, which can help you feel more in control of your dental health journey.

In summary, the decision between root canal treatment and potential extraction leading to dentures or implants should be made based on a thorough evaluation of your dental condition. Consulting with specialists as needed and maintaining open communication with your dental care team will ensure that you receive the best possible treatment tailored to your needs.

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