Will My Teeth Turn Black After Replacing Silver Fillings with Resin? - Dentistry

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Silver amalgam dental restoration?


Hello, doctor: I would like to ask if my teeth will continue to darken after I replaced my old silver fillings with resin.
I have noticed that my teeth appear a bit darker now.
Is this due to the previous silver fillings?

ck, 20~29 year old female. Ask Date: 2019/05/10

Dr. Zeng Guanghui reply Dentistry


The previously placed silver amalgam may have corroded over time, leading to the discoloration of the tooth.
Removing the amalgam filling and replacing it with a resin composite should not cause staining to the surrounding tooth structure.

Reply Date: 2019/05/10

More Info


When it comes to dental fillings, particularly the transition from silver amalgam to resin composite, many patients express concerns about the potential for their teeth to discolor or turn black after the procedure. Your question about whether your teeth will turn black after replacing silver fillings with resin is quite common, and it’s important to understand the factors that contribute to tooth discoloration.

Firstly, silver fillings, which are primarily made of a mixture of metals including silver, mercury, and tin, can sometimes lead to a condition known as "amalgam tattoo." This occurs when particles of the amalgam become embedded in the gum tissue or tooth structure, leading to a gray or black discoloration. Over time, the surrounding tooth structure can also become stained due to the corrosion of the amalgam, which may contribute to a darker appearance of the tooth.

When you replace silver fillings with resin, the resin material itself is designed to be tooth-colored and is less likely to cause discoloration. However, if the tooth has been previously affected by the silver filling, there may be residual staining or damage to the tooth structure that could still be visible after the replacement. This is particularly true if there was any decay or structural compromise that was not fully addressed during the filling replacement.

It’s also worth noting that the appearance of your teeth can be influenced by various factors, including dietary habits, oral hygiene practices, and even the natural aging process. Foods and beverages that are high in pigments, such as coffee, tea, red wine, and certain fruits, can stain teeth over time. Additionally, poor oral hygiene can lead to plaque buildup and tartar, which can also contribute to discoloration.

If you are noticing that your teeth appear darker after the replacement of your silver fillings, it may not necessarily be due to the resin itself, but rather a combination of the factors mentioned above. It’s advisable to consult with your dentist to evaluate the condition of your teeth and gums. They can provide a thorough examination to determine if there are any underlying issues that need to be addressed, such as residual decay or staining.

In some cases, professional dental cleaning or whitening treatments may be recommended to help restore the natural color of your teeth. Your dentist can also discuss options for further cosmetic improvements if desired.

In summary, while replacing silver fillings with resin is generally a positive step towards improving the aesthetics of your smile, it is essential to maintain good oral hygiene and be mindful of dietary choices to prevent further discoloration. If you have concerns about the appearance of your teeth, don’t hesitate to reach out to your dental professional for personalized advice and treatment options.

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