Dealing with a Fallen Dental Filling: What to Do Next? - Dentistry

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The dental filling came out because I used dental floss?


Hello Doctor,
Dental Condition: The tooth in question is the lower left first molar.
This tooth had a filling done in 2016 due to a chip (natural fracture) between it and the second molar.
The filling done in 2016 was a standard composite resin, covering about 1/10 of the entire molar, but it was quite deep.
At that time, the dentist warned that if it were to fracture again, I might face issues requiring root canal treatment.
Recently, I started using a water flosser along with regular dental floss, so I haven't been using dental floss daily.
However, two days ago, while using the floss, a small piece of the filling came off (compared to my memory of the fracture, it seems to be just a portion of the resin that fell off).
Since the piece fell out while I was using the floss, I was able to find the fallen resin and attempted to push it back in, which I successfully did, and it is now wedged against the adjacent tooth (it won't fall out, but I am currently hesitant to use dental floss).

I am currently studying abroad and had originally planned to return to Taiwan in August, but due to the COVID-19 pandemic, I have decided to postpone my trip.
I am uncertain about how to appropriately handle this tooth.
Currently, there is no pain or sensitivity.
I am considering visiting a nearby dental clinic for an X-ray, but since the filling has been pushed back in, I am unsure if the dentist will take an X-ray.

My main question is: if the repair process ultimately leads to the need for root canal treatment, would it be better to wait for sensitivity to develop before considering treatment? Or would it be better to wait until December to address it when I return to Taiwan (communication is difficult here, and I am considering paying out of pocket for an inlay if possible)? The reason for my concern is that I have already undergone root canal treatment on two teeth, both of which had exposed nerves after the dentist drilled during the repair (there were no issues, pain, or sensitivity before the repairs).

Thank you for taking the time to respond.

SHU, 20~29 year old female. Ask Date: 2020/07/27

Dr. Huang Tingfang reply Dentistry


Dear Miss SHU: Hello! Actually, you take great care of your teeth! It's impressive that you were able to put the fallen resin back in! Basically, you should get it refilled as soon as possible; otherwise, the cavity will get bigger and affect the nerves.
Take care! Wishing you peace and smoothness in everything! Sincerely, Dr.
Huang Ting-Fang, Dentistry.
You will need root canal treatment soon!

Reply Date: 2020/07/27

More Info


Dealing with a fallen dental filling can be concerning, especially when you are away from home and unable to see your regular dentist. Here’s a comprehensive guide on how to manage this situation based on your description and general dental knowledge.

First and foremost, it’s important to maintain good oral hygiene. Since you’ve already experienced a filling falling out, it’s crucial to keep the area clean to prevent any potential infection. Continue brushing your teeth gently, especially around the affected area, and consider using an antibacterial mouthwash to help reduce bacteria in your mouth. Avoid using the affected tooth for chewing until you can see a dentist, as this could exacerbate the situation.

You mentioned that you successfully placed the fallen filling back into the cavity. While this is a temporary fix, it’s not a long-term solution. Dental materials used for fillings are designed to bond with the tooth structure, and simply placing it back may not provide the necessary seal to prevent bacteria from entering. Therefore, it’s advisable to avoid using dental floss in that area for now, as it could dislodge the filling again.

Regarding your question about whether to wait for sensitivity to arise before seeking treatment, it’s generally not advisable to wait until you experience pain or sensitivity. The fact that you have a history of root canal treatments due to previous fillings failing suggests that the tooth may be at risk for further complications. If the filling has fallen out, it could expose the underlying tooth structure to decay, which may lead to more severe issues, including the need for a root canal.

If you are considering waiting until December to return to Taiwan for treatment, keep in mind that dental issues can progress quickly. If you can find a local dentist, even if there is a language barrier, it may be worth seeking an evaluation. Many dental offices have staff who can assist with translation, or you might find a dentist who speaks English. An X-ray can help determine the extent of any damage and whether a root canal is necessary.

In terms of treatment options, if the tooth is still structurally sound and there is no infection, your dentist may recommend redoing the filling or placing an inlay or onlay, which are more durable than traditional fillings. If the tooth has significant decay or damage, a crown may be necessary to restore its function and protect it from further damage.

Lastly, since you have expressed concerns about the quality of the dental work and the potential for needing a root canal, it’s essential to communicate these concerns with your dentist when you do seek treatment. They can provide you with a treatment plan that addresses your specific needs and helps prevent further complications.

In summary, while it may be tempting to wait until you return home for treatment, it’s generally best to seek dental care sooner rather than later to avoid complications. Maintaining good oral hygiene and avoiding the use of the affected tooth will help manage the situation until you can see a professional. If you can find a local dentist, even for a temporary fix, it may save you from more extensive treatment down the line.

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