Many dental patients wonder if it is possible to get a cavity in a tooth that already has a filling. The answer is yes, it is possible for a tooth that already has a filling to get a cavity.
This can happen for a few reasons. First, the filling may not have been placed properly and there may be gaps around the edges of the filling where bacteria can enter. Second, the filling may simply be wearing down over time and no longer providing adequate protection against cavities. Third, the type of filling material may not be ideal for the tooth in question and may not provide adequate protection against cavities.
If a tooth with a filling does develop a cavity, it will need to be treated just like any other cavity. This usually involves drilling out the decay and then placing a new filling. In some cases, a crown or other type of dental restoration may be necessary.
How Does A Cavity Form Under A Filling?
Cavities form when bacteria in the mouth produce acids that eat away at the tooth enamel. This process is called demineralization. The bacteria that cause cavities are found in plaque, a sticky film that forms on teeth. Plaque is made up of food debris, saliva, and bacteria. When you eat or drink sugary or starchy foods, the bacteria in plaque produce acids. These acids can demineralize your tooth enamel, causing a cavity.
This explains why a tooth with a filling can form another cavity. Either the filling was not done properly at first allowing this bacteria to get under the tooth, or the filling has worn down over time causing it to crack and allow bacteria to enter.
How Do You Know If You Have a Cavity Under A Filling?
There are a few ways that you can suspect there is a cavity under a filling in one of your teeth. The first would be any pain in the suspected tooth when chewing or biting down. If there is any sharp pain or temperature sensitivity, this may be a sign of a cavity.
Another reason to suspect a cavity would be any changes in the color of the tooth. A change in color or opacity may be a sign that a cavity is present under the filling.
Lastly, If you see any visible cracks or damage in a filling, this can be a sign of a cavity, especially if you are experiencing other signs as well.
If you think you have a cavity under your filling, it is important to see a dentist right away so the issue does not worsen. The dentist will be the only one to ensure that you are dealing with a cavity or not. The dentist will take an X-Ray of your teeth to spot the cavity and replace the filling.
Can All Types of Fillings Get Cavities?
Fillings come in a variety of materials, such as amalgam (silver), composite resin, gold, and porcelain. While all types of fillings can potentially develop cavities around or underneath them, some materials may wear down faster than others. Composite fillings, for instance, tend to wear down more quickly than gold or porcelain, and this can lead to small gaps forming between the filling and the tooth. Amalgam fillings, though durable, can expand and contract over time, causing similar issues.
Regardless of the type of filling, it’s crucial to maintain good oral hygiene, as cavities can form when bacteria are allowed to accumulate around weakened areas of the tooth or filling material.
Can Poor Oral Hygiene Cause Cavities Around Fillings?
Even if a filling is perfectly placed, poor oral hygiene habits can increase the risk of developing cavities around the filled area. Cavities form when plaque builds up, especially around the edges of fillings. Brushing twice a day and flossing regularly is essential to prevent bacteria from forming cavities. Regular dental cleanings also play a key role in keeping your teeth, including those with fillings, healthy and cavity-free. Without proper care, bacteria and food particles can slip into the small spaces around the filling, leading to decay.
What is a Recurrent Cavity?
A recurrent cavity refers to a new cavity that forms around or under a previously placed filling. This happens when the seal between the tooth and filling material is compromised, allowing bacteria to enter. Recurrent cavities can be particularly problematic because the decay occurs under the surface, and you might not notice it until it has caused significant damage to the tooth. That’s why routine dental check-ups and X-rays are important — they can detect issues like recurrent cavities before they become painful or require more extensive treatment.
How Can You Prevent Cavities After Getting a Filling?
Preventing cavities in a tooth that already has a filling starts with excellent dental hygiene. Brushing and flossing are key to keeping decay-causing bacteria at bay. Fluoride toothpaste can help strengthen the enamel and reduce the chances of cavities forming around a filling. In addition to regular cleanings, your dentist might recommend dental sealants or fluoride treatments, which can provide extra protection. Avoiding excessive sugar and starches in your diet is another way to reduce the risk of cavities.
What Happens if a Recurrent Cavity Goes Untreated?
If a cavity forms under a filling and goes untreated, it can lead to more serious dental problems. The decay can continue to spread deeper into the tooth, eventually reaching the root and nerve. At this point, a simple filling may no longer be sufficient, and more intensive procedures like a root canal or crown may be necessary. If left untreated for too long, it could even lead to tooth loss, which could require more complex treatments such as implants or bridges. This is why addressing any potential issues early is so important.
Can Fillings Last Forever?
No, fillings do not last forever. Over time, fillings can wear down, crack, or become loose. The lifespan of a filling depends on the material used, your dental habits, and the location of the filling in your mouth. On average, composite fillings may last 5-7 years, while amalgam fillings can last 10-15 years or longer with proper care. Regular dental check-ups are essential for monitoring the condition of your fillings. Your dentist can assess whether the filling needs to be replaced before any decay or damage occurs.
Should You Replace Old Fillings Even if There’s No Cavity?
If your dentist notices that a filling is cracked, worn down, or no longer providing a good seal, they may recommend replacing it, even if there isn’t yet a cavity underneath. This can help prevent future issues before they arise. Replacing old or damaged fillings is a proactive way to avoid more serious problems like recurrent cavities or infection. If the filling material is outdated or has deteriorated, modern alternatives like composite or porcelain may offer better durability and aesthetic results.
Contact Family Tree Dental To Have A Dental X-Ray
If you suspect that you have a cavity under a filling, you should visit a qualified dentist like Family Tree Dental to have an X-Ray taken. This is the only way to ensure that you do have a cavity and not something else. Once the cavity is confirmed, the dentist will be able to replace the filling and prevent further damage to your tooth.
At Family Tree Dental, we are committed to providing our patients with the best possible dental care. We are located in Ohio and West Virginia. Our offices are located in Marietta, Belpre, and Parkersburg.
