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Three Things to Know About Inlays and Onlays Princeton, NJ
woman showing her white teeth

A large cavity can cause a tooth to become more susceptible to further damage. Sometimes a tooth will need to be protected with a crown in order to prevent more breakage later. There are times, however, when a full crown is not necessary, but the affected area warrants more than a traditional filling. Inlays and onlays are used in these instances. Here are a few things you may want to know about them.

The Difference between Inlays and Onlays

The bumps on the chewing surface of posterior teeth are called cusps. When a cavity is contained within the area between the cusps, an inlay is used to fill it. When the cavity involves one or more of the cusps, an onlay is used.

The onlay is also called a partial crown. This is because it does not cover the tooth the way a dental crown would do. It covers a significant area of the tooth, but not the entire tooth.

Aesthetics of Inlays and Onlays

Traditional inlays and onlays were made of gold. They were constructed to fit into the prepared space and cemented into place. Gold is a bio-compatible material for most people, and it can withstand the chewing pressure exerted on the teeth.

Today, inlays and onlays can be made from material that matches the natural tooth color. Ceramic or porcelain is used, and these materials can be bonded to the tooth. The bonding process seals the inlay or onlay to the tooth. It can also improve strength while maintaining the natural look of the tooth.

Choosing an Inlay or Onlay Over a Crown

The decision to use an inlay or onlay over a crown is not always easy. A thorough examination of the tooth and its integrity is necessary in order to make the determination. Some cavities can be large and still leave enough viable tooth material making either the inlay or onlay sufficient. Others may require significant removal of tooth structure. In these situations, a full crown may be necessary in order to protect the remaining structure.

Your dentist will decide after studying the tooth structure. Diagnostic x-rays may be used to help make the determination. Saving your natural tooth and keeping it strong is the primary objective.

Posted on behalf of Prime Dental Care

417 Wall St
Princeton, NJ, 08540

(609) 651-8618

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Dr. Ma and team are wonderful. We have been visiting here for our entire family dental care for many years. Clean facility and very knowledgeable staff.

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I came in today for regular ciening and Kate really did a great job. She also explained and demonstrated the correct way of flossing and brushing. Thank you!

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Great service! I come here for my fillings and teeth cleanings. Have been feeling much better!

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I have been coming to Prime Dental for over a year and everyone has been incredibly nice and helpful. Maggie is a wonderful dental hygienist, I recommend everyone go see her for a dental cleaning!

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Prime Dental Care 417 Wall St Princeton NJ, 08540