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How Does Dental Cement Keep Your Crown in Place?

Posted on 5/17/2016 by Keith M. Cooper
A diagram of how a dental crown works.Dental crowns are caps that fit over your natural tooth or a dental abutment, and they are permanently put into place with cement.

However, have you ever wondered what exactly that cement is? Is it the same thing that is used on your sidewalk? How could that be safe for your mouth?

Types of Dental Cements

There are four major types of dental cements that could be used in your mouth, and they are made from different types of materials. Zinc phosphate is one of the most common, and it is made from phosphoric acid liquid mixed with zinc oxide powder.

Resin-modified glass ionomer (or RMGI) and glass ionomer (or GI) are some of the newer options available, and they are typically made out of glass powder with polyacrylic liquid. Resin cements are also available and contain synthetic resins that can affect the strength and consistency of the cement.

How These Cements Work

Dental cements work by creating retention and resistance after they are compressed, holding the crown together. Other options will create a chemical bond that supplies additional strength, making the bond less likely to break down than cements that do not create a chemical bond.

However, cements that create a chemical bond are difficult to remove if the crown ever needs to be repaired or replaced.

Sometimes, a permanent bond isn't ideal. For example, if you have a temporary crown put into place, you'll want it to hold for a while but not forever. In these cases, zinc oxide-eugenol cement can be used to create cement that is fairly simple to break, but strong enough to hold your temporary crown in its proper position.

Do you have an appointment to get a crown put into place in the future? Contact our office today to see what choice is best for you.

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5150 Graves Ave., Suite 12E
San Jose, CA 95129
(669) 244-1550

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Keith Cooper, DDS | | (669) 244-1550
5150 Graves Ave., Suite 12E ,San Jose, CA 95129