What Are Baby Teeth Filled With And How Long Do Fillings Last?

By Jupiter Kids Dentistry & Orthodontics

If your child ever needed a baby tooth filling, you may have wondered what it was filled with and how long the filling would last. To answer these questions, let’s take a look at the types of materials used for fillings and why baby teeth are treated differently than adult teeth. 

Types of Fillings for Baby Teeth 

When it comes to baby tooth fillings, dentists usually use a composite resin material. This is because composite resin can be used in smaller areas and conforms more easily to the shape of the tooth. It can also be matched to the color of natural teeth more accurately. On the other hand, silver amalgam fillings are rarely used on primary teeth because they require larger amounts of material and don’t bond as well to young teeth that may still be growing. 

Why Are Baby Tooth Fillings Different? 

Baby teeth can get the same type of filing as adult teeth do because it is important to keep them in the mouth as long as they need to be there. Composite resin is preferred—it can provide a strong bond, which means less risk of damaging the underlying structures of the tooth. 

How Long Do Fillings Last? 

The lifespan of a baby tooth filling depends on several factors including where it is located in the mouth and how well your child takes care of their oral hygiene habits. Generally speaking, fillings placed on baby molars tend to last longer than those placed on front incisors due to their posterior location in the mouth. With proper care, most fillings can last anywhere from three to five years before needing replacement or repair work done.  

From what they’re filled with to how long they last–there’s a lot to know about baby tooth fillings! While silver amalgam is rarely used for primary teeth due to its large amount of required material, composite resin has become an excellent alternative thanks to its ability to conform easily and match natural tooth shades accurately without needing too much material. 


With proper oral hygiene habits and regular check-ups with your dentist, most baby tooth fillings can last up to 3-8 years before needing repair or replacement work done. By understanding all there is about baby tooth fillings, you can help ensure that your child’s smile stays healthy throughout their life!

What are baby teeth filled with? 

Baby teeth are typically filled with a composite resin material, which is a type of resin made up of tiny particles of glass and quartz. This material is color-matched to the tooth to make the filling look more natural.

How long do baby tooth fillings last? 

Baby tooth fillings can last anywhere from 3 to 8 years, depending on the size and type of cavity being treated. Good oral hygiene practices such as brushing twice daily and flossing at least once a day can help extend the life of fillings.

What should I do if my child’s filling falls out? 

If your child’s filling falls out, it’s important to visit your dentist as soon as possible. The dentist will be able to assess the damage and determine whether or not a new filling is needed in order to protect your child’s tooth from further decay and pain. 

New Patients and Emergency Appointements Welcome