Dental Tips Blog


How Do Dental Fillings Stay in Teeth?

Posted in Fillings

Have you ever wondered what makes dental fillings stay in teeth?

There are two main ways that this dental “magic” happens. The traditional method is mechanical, while the newer one is micro-mechanical. Once you understand the difference, you’ll be better prepared to choose the right kind of filling for your smile.

How Dentists Place Mechanical Fillings

Don’t let the term “mechanical” fool you; there aren’t any machines included in a tiny filling. Mechanical simply refers to how a filling physically locks with a tooth.

Traditional silver fillings set up quickly once the amalgam mixture is poured into a prepared tooth. It hardens, and the dentist shapes it to repair the tooth. But this material won’t stick to enamel like glue.

So, what the dentist has to do is create the base of the deeper layer of your tooth to be slightly wider than the opening at the top. After the liquid filling hardens, the tooth’s shape helps hold – or wedge it – in place.

What Is a Micro-Mechanical Bond?

Dentists set  composite resin tooth-colored fillings with a special light that results in a chemical reaction. Before pouring in the material, however, the dentist prepares the tooth surface by etching it with a chemical.

The roughened tooth surface then creates an easy place for the filling to grip onto as it hardens. This is called a micro-mechanical bond.

A micro-mechanical method is considered better than the traditional method since it lets the filling create a tighter bond with the tooth. This means that the tooth preparation doesn’t have to be as invasive.

Should you choose a conservative tooth-colored filling or the classic silver one? Contact a restorative dentist nearby to help you decide.

Posted on behalf of:
Soft Touch Dentistry
1214 Paragon Dr
O’Fallon, IL 62269
(618) 622-5050

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