Do Dentists Remove Silver Fillings Before Placing Crowns? - Dentistry

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Should the silver filling be removed before getting braces?


If a tooth has previously been filled with silver amalgam and is going to receive a crown, will the dentist remove all the amalgam before placing the crown, or could some of the amalgam remain under the crown? Is it possible that different dentists may have different approaches to this procedure?

Qǐngwèn, 40~49 year old female. Ask Date: 2013/07/30

Dr. Zeng Guanghui reply Dentistry


Hello: The need for a dental crown generally arises when there is excessive damage to the tooth structure that cannot be repaired with a filling, or when the tooth's nerve is inflamed, making it more fragile and in need of protection from a crown.
Before placing a crown, it is advisable to first restore the damaged tooth structure with silver amalgam or resin filling for optimal results.
Wishing you good health.

Reply Date: 2013/07/30

More Info


When it comes to dental crowns, the management of existing silver fillings (also known as amalgam fillings) is an important consideration. Dentists typically assess the condition of the tooth and the filling before proceeding with the crown placement.
In general, if a tooth has a significant amount of decay or if the existing silver filling is compromised, the dentist will likely remove the silver filling before placing the crown. This is because the crown needs a stable and clean surface to adhere properly, and any remaining amalgam could interfere with the fit and longevity of the crown. Additionally, if the tooth has undergone root canal treatment, the dentist may also need to remove any remnants of the filling to ensure that the crown can adequately seal the tooth and protect it from further decay.

However, there are instances where some of the silver filling may remain. For example, if the filling is intact and not contributing to any issues, the dentist might choose to leave it in place. This decision can vary based on the individual case, the dentist's judgment, and the specific circumstances surrounding the tooth's health.
It's also worth noting that different dentists may have different approaches to this situation. Some may prefer to remove all existing fillings to ensure a clean slate, while others may evaluate the filling's condition and decide that it can remain. This variability can be influenced by the dentist's training, experience, and the specific materials and techniques they prefer to use.

In terms of the materials used for crowns, dentists often recommend using high-quality materials that can withstand the forces of chewing and provide a good aesthetic appearance. Crowns can be made from various materials, including porcelain, ceramic, and metal alloys. The choice of material may also influence whether existing fillings are removed, as some materials bond better to clean tooth structure than to amalgam.

In conclusion, while it is common practice for dentists to remove silver fillings before placing crowns, the decision ultimately depends on the specific condition of the tooth and the dentist's professional judgment. If you have concerns about your treatment plan, it is always a good idea to discuss them with your dentist. They can provide you with detailed information about their approach and the rationale behind their decisions, ensuring that you feel comfortable and informed throughout the process.

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