Can Dental Fillings on Front Teeth Change Shape Over Time?

Q: Can Dental Fillings on Front Teeth Change Shape Over Time?

Hello： Because resin itself is a polymer that is softer than the original structure of the teeth, it may deform and discolor over time, which is a normal phenomenon. <br>It is recommended to use it carefully and to have regular check-ups!

Will the filling for a chipped incisor deform or expand?

Hello, Doctor.
At the end of August, I bit down on something hard and noticed a crack on the surface of my front tooth, along with a small hole.
I later went for a consultation, and the dentist filled it in.
However, I recently noticed that the shape of the filling has changed from just a small white dot to two additional streaks extending from it (it feels like the resin has changed shape?).
It seems like the filling area has expanded.
Is this possible? (I have a habit of taking pictures every few days.)

Lin, 20~29 year old female. Ask Date: 2022/10/01

Dr. Lin Jiayong reply Dentistry

Hello: Because resin itself is a polymer that is softer than the original structure of the teeth, it may deform and discolor over time, which is a normal phenomenon.
It is recommended to use it carefully and to have regular check-ups!

Reply Date: 2022/10/01

More Info

Yes, dental fillings, especially those made from composite resin, can change shape or appearance over time due to various factors. When you have a filling placed, the dentist shapes it to fit the cavity and blend with the natural tooth structure. However, several reasons can lead to changes in the shape or size of the filling:
1. Wear and Tear: Over time, fillings can wear down due to the forces of chewing and grinding. This is especially true for fillings in areas that experience significant pressure, such as the front teeth. If you frequently bite down on hard objects or grind your teeth, this can accelerate the wear on the filling.

2. Shrinkage: Composite resins can shrink slightly as they cure (harden). This shrinkage can create gaps between the filling and the tooth structure, which may lead to the perception that the filling has changed shape or size.

3. Staining and Discoloration: Composite fillings can absorb stains from food, beverages, and tobacco. This can alter their appearance, making them look different from when they were first placed. If the filling appears to have extended or changed shape, it could be due to staining or discoloration.

4. Secondary Caries: If bacteria enter the gap between the filling and the tooth due to wear or shrinkage, it can lead to secondary caries (new decay). This decay can cause the filling to appear larger or change shape as it progresses.

5. Material Properties: Different filling materials have varying properties. Some materials are more prone to wear or deformation than others. If your filling is made from a less durable material, it may change shape more readily.

6. Improper Placement: If the filling was not placed correctly, it might not have adhered well to the tooth structure, leading to changes over time. This could also result in discomfort or sensitivity.

If you notice that the filling appears to have changed shape or size, it is essential to consult your dentist. They can evaluate the filling and determine if it needs to be repaired or replaced. Regular dental check-ups are crucial for monitoring the condition of fillings and addressing any issues before they become more significant problems.

In summary, yes, dental fillings on front teeth can change shape over time due to wear, shrinkage, staining, secondary caries, material properties, or improper placement. If you have concerns about your filling, it’s best to seek professional advice to ensure your dental health is maintained.

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