Can Wisdom Teeth Really Replace Extracted Molars? A Dental Dilemma

Is it true that removing original teeth can leave space for wisdom teeth to fill?

I just went to the dentist and mentioned that brushing the area near the last tooth on the right side hurts.
The dentist said it was fine, but the second-to-last tooth on the top has a deeper cavity, and there’s an ugly wisdom tooth behind it.
She suggested extracting the second-to-last tooth to allow for the wisdom tooth to fill the space later.
I looked at the X-ray, and the wisdom tooth is growing vertically, not horizontally.
After the extraction, I came home and now have a slight headache and some pain in my teeth, possibly from clenching too tightly.
The dentist advised me to eat cold food for at least an hour and not to eat anything hot, so I just had a lunch box.

I read online that usually, wisdom teeth are extracted, so I'm confused about whether the wisdom tooth can really fill the space.
The dentist didn’t ask if I wanted dentures; she just said it would be filled directly.
However, online sources suggest that after an extraction, it’s advisable to get dentures.
The dentist scheduled my next appointment for a filling, but I’m uncertain about whether I need dentures.
Is it really okay to leave the wisdom tooth after removing the original tooth? Will it fill the space? I'm worried that the dentist didn’t explain things clearly and that I might end up spending money on dentures later.

Xiao Jie, 20~29 year old female. Ask Date: 2016/07/21

Dr. Huang Tingfang reply Dentistry

Dear a2435687a,
Hello! Regarding your situation, extracting the severely decayed tooth is actually acceptable, as the decay is too deep, making it difficult to restore and increasing the risk of periodontal disease.
As for whether the wisdom tooth will be directly restored, that will need to be monitored.
The fundamental consideration is to remove the bad tooth while preserving the healthy ones.
This is also a principle of treatment, which will minimize your discomfort.
Please make sure to have regular follow-up appointments.
Thank you! Wishing you well!
Sincerely,
Dr.
Huang Ting-Fang, Dentistry

Reply Date: 2016/07/21

More Info

When it comes to the question of whether wisdom teeth can effectively replace extracted molars, there are several important factors to consider. Wisdom teeth, or third molars, are often the last teeth to erupt in the mouth, typically appearing in late adolescence or early adulthood. While they can sometimes fill the gap left by an extracted molar, this is not always a straightforward solution.

Firstly, it is essential to understand the positioning and health of the wisdom teeth. In your case, you mentioned that your wisdom tooth is vertically positioned, which is generally a more favorable orientation than horizontal impaction. However, even if a wisdom tooth is positioned correctly, it may not have the same functionality or strength as a fully developed molar. Molars are designed to withstand significant chewing forces, and wisdom teeth may not be as robust, especially if they are not fully erupted or if they have been impacted.

Moreover, the decision to extract a molar and rely on a wisdom tooth to fill that space should be made with caution. While some dentists may suggest that a wisdom tooth can serve as a replacement, it is crucial to consider the long-term implications. Wisdom teeth often have a higher risk of developing cavities or periodontal disease due to their location at the back of the mouth, where cleaning can be more challenging. If the wisdom tooth is not healthy or if it has a history of dental issues, it may not be a reliable substitute for a molar.

In your situation, the dentist's recommendation to extract the second-to-last molar and potentially rely on the wisdom tooth for filling that space raises some concerns. It is not uncommon for dentists to suggest this approach, but it is essential to have a comprehensive understanding of your dental health and the potential risks involved. If the wisdom tooth is healthy and positioned well, it might serve as a temporary solution, but it is advisable to have a backup plan, such as considering a dental implant or bridge if the wisdom tooth does not perform as expected.

Regarding the need for dentures or other forms of prosthetic teeth, this decision should be based on your overall dental health and the condition of your remaining teeth. If the wisdom tooth does not adequately replace the extracted molar or if it develops issues in the future, you may indeed need to consider options like dental implants or bridges to restore function and aesthetics to your smile.

It is also worth noting that after any tooth extraction, it is common to experience discomfort, swelling, or even headaches, especially if you are clenching your jaw due to anxiety about the situation. Following your dentist's post-operative care instructions, such as avoiding hot foods and maintaining good oral hygiene, is crucial for a smooth recovery.

In summary, while wisdom teeth can sometimes fill the gap left by extracted molars, they are not always a reliable or ideal solution. It is essential to have a thorough discussion with your dentist about the health of your wisdom teeth, the potential need for additional dental work, and the best long-term plan for your oral health. If you have concerns about the clarity of the information provided by your dentist, seeking a second opinion from another dental professional may also be beneficial.

Similar Q&A

Can Wisdom Teeth Replace Problematic Molars? A Dental Dilemma

The doctor mentioned that there is a high probability that the wisdom tooth will not erupt, which has led to inflammation of the gums around my lower left second molar. Therefore, the doctor recommended extracting the wisdom tooth. However, since the second molar has undergone ro...

Dr. Lin Jiayong reply Dentistry
Hello, It is advisable to discuss with an orthodontist first. Sometimes, the position of the wisdom teeth is very deep, and even if the second molar is extracted, it may not be easy to bring the wisdom teeth out. Additionally, the shape of the wisdom teeth may not necessarily m...

Can Wisdom Teeth Be Transplanted to Replace Molars?

I have been told since middle school that my molars need to be extracted due to severe decay. I recently learned about a technique that involves transplanting healthy wisdom teeth to the position of the molars, which can save on the cost of dental implants. I would like to ask th...

Dr. Zeng Guanghui reply Dentistry
The molar is severely decayed and needs to be extracted. There is a plan to use a healthy wisdom tooth to replace the extracted molar. It is necessary to wait until the wisdom tooth has fully erupted or partially emerged before it can be transplanted to the extraction site. It is...

Understanding Molars Cavities: Extraction vs. Filling Options

Hello, I would like to ask the doctor a question. Today, I went to a clinic near my home for a dental cleaning and X-rays. The dentist mentioned that I need to have my molar extracted due to decay to prevent it from affecting other teeth. I have previously been advised by other d...

Dr. Lin Jiayong reply Dentistry
Hello: The physician may suggest extracting the molars to allow the wisdom teeth to emerge and replace the missing teeth. However, orthodontic treatment may still be necessary to position the teeth appropriately. It is advisable to have a detailed discussion with the physician be...

Can Wisdom Teeth Replace Missing Molars? Exploring Dental Options

Hello, Doctor: I have had my lower right first molar extracted, and now there is a gap. The dentist who performed the extraction suggested either a dental implant or a bridge. However, I still have a wisdom tooth on the lower right that is horizontally impacted. I would like to k...

Dr. Huang Zhicheng reply Dentistry
Dear Winnie, Hello. It is difficult to extract the horizontally impacted wisdom tooth and transplant it to the space of the first molar, as the wisdom tooth needs to be reshaped and damaged for extraction, making it unsuitable for transplantation. Options for the edentulous area...