Emergency Care for Exposed Root Canal Filling and Crown Options - Dentistry

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Regarding the exposure of the cavity due to the dislodgment of root canal filling materials and subsequent management?


Hello, Doctor.
I would like to ask if there are any emergency measures needed if the filling falls out and exposes the cavity during root canal treatment? The treatment area is the lower molar in the back, and I plan to get a dental crown afterward.
I would like to know if all-ceramic crowns are more prone to fracture compared to all-metal crowns (I am currently considering an all-ceramic crown versus a palladium-silver alloy).
Will ceramic crowns cause wear on the opposing teeth? My teeth are misaligned, and I primarily chew with my molars.
Thank you.

Timson, 20~29 year old female. Ask Date: 2018/12/08

Dr. Zeng Guanghui reply Dentistry


1.
If the temporary filling falls out during root canal treatment and exposes the cavity, you should return for a re-treatment of the temporary filling.
2.
The flexibility of all-ceramic crowns is still not as good as that of all-metal crowns, but they have higher hardness.
If the occlusion is not properly adjusted, they can wear down easily; however, under normal occlusal conditions, they will not wear down.

Reply Date: 2018/12/08

More Info


When dealing with an exposed root canal filling, it is important to take immediate steps to protect the tooth and prevent any potential complications. If the filling has fallen out and the canal is exposed, you should consider the following emergency care measures:
1. Avoid Sensitivity and Infection: The exposed area can be sensitive to temperature changes and bacteria can easily enter the canal, leading to infection. Rinse your mouth gently with warm salt water to help cleanse the area and reduce the risk of infection.

2. Temporary Filling: If possible, you can use a temporary dental cement or over-the-counter dental wax to cover the exposed area until you can see your dentist. This will help protect the tooth from further irritation and contamination.

3. Pain Management: If you experience pain, over-the-counter pain relievers such as ibuprofen or acetaminophen can help manage discomfort until you receive professional care.

4. Seek Dental Care: It is crucial to contact your dentist as soon as possible. They will assess the situation and may need to re-treat the root canal or place a new filling.

Regarding your question about crown options, both all-ceramic and all-metal crowns have their advantages and disadvantages:
- All-Ceramic Crowns: These crowns are aesthetically pleasing and can closely match the color of your natural teeth. However, they can be more brittle than metal crowns, which means they may be more prone to fracture, especially in areas where there is significant biting force, such as the molars. If you have a history of grinding your teeth or if your bite is misaligned, this could increase the risk of fracture.

- All-Metal Crowns: Metal crowns, such as those made from gold or other alloys, are extremely durable and can withstand significant chewing forces. They are less likely to chip or break compared to ceramic crowns. However, they are not as aesthetically pleasing and may not blend in with your natural teeth.

- PFM Crowns (Porcelain-Fused-to-Metal): These crowns combine the strength of metal with the aesthetics of porcelain. They are a good compromise, offering durability while still providing a natural appearance.

Regarding wear on adjacent teeth, all-ceramic crowns can potentially cause more wear on opposing teeth, especially if they are harder than the natural enamel. If your bite is misaligned, this could exacerbate the issue. It is essential to have your dentist evaluate your bite and the fit of the crown to minimize any potential wear on surrounding teeth.

In summary, if your root canal filling has fallen out, take immediate steps to protect the tooth and seek dental care. When considering crowns, weigh the benefits and drawbacks of all-ceramic versus all-metal options, especially in relation to your specific dental needs and bite alignment. Always consult with your dentist for personalized advice tailored to your situation.

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