Dental Inlays and Onlays Los Angeles, CA
Dental crowns and fillings are pretty common procedures used to fill in cavities and decay. However, there are alternatives out there. Dental inlays and onlays can also be used. They are stronger than a filling, but not as invasive as a crown, which may involve having to reshape the tooth.
It is helpful to think of inlays and onlays as the middle ground between fillings and a crown. Dental inlays and onlays are available at Westchester Dental Arts in Los Angeles and the surrounding area. Call us at (310) 450-0300 to schedule an appointment to learn if this treatment option could work for you.
What are Inlays and Onlays?
Inlays
Traditionally, inlays replace a small amount of tooth structure left by a cavity, just as fillings do. They filled and sealed the tooth but were made only of gold. Inlays today are made of tooth-colored material such as ceramic, porcelain, or a specialized dental composite.
The inlay consists of the tooth-colored material and bonding, a clear fluid material, to attach the inlay to the tooth. As explained by the American College of Prosthodontists, "Using a clear fluid version of this material to seal the exposed surfaces of the teeth decreases sensitivity to temperature changes and certain types of foods." The bonding material is also tooth-colored and may help improve the color and appearance of stained or discolored teeth.
Onlays
Onlays are similar to inlays in that they fill a missing hole caused by a cavity, but onlays extend onto the chewing surface of a tooth to replace one or more cusps. Traditionally, they were also only made of gold, but tooth-colored onlays have made an appearance in dentistry. An onlay is considered a more effective option for patients with large cavities or the decayed area expands over the top of the tooth.
The process of inlays and onlays both involve bonding material to attach and seal it to the tooth. In both treatments, the bonding material may actually improve the strength of the tooth.
“An onlay is considered a more effective option for patients who have large cavities or the decayed area expands over the top of the tooth.”
Inlay vs. Filling
Similar to the onlay and crown comparison, there are several things to keep in mind when looking at inlays versus fillings. Traditional fillings are typically recommended for minor cavities, while inlays can be used to fill larger cavities that are not severe enough to need a crown. While inlays are more durable than fillings, fillings can be placed much more quickly. An inlay takes at least two visits - one for the impression to be made and one for the placement.
“Similar to the onlay and crown comparison, there are several things to keep in mind when looking at inlays versus fillings.”
Onlay vs. Crown
An onlay is generally used when a patient has a small hole that is only a tad larger than an inlay or old filling. In most cases, an onlay can cover the cavity hole and surrounding area. Onlays are a less aggressive restoration treatment than crowns as a smaller amount of tooth structure needs to be removed.
On the other hand, crowns are caps or covers used to restore the function and appearance of a tooth but replace the tooth itself. According to the article on caps and crowns, "Crowns are indicated for teeth with very large fillings, teeth that have had a root canal, fractured teeth, worn teeth due to grinding, and misshapen and/or discolored teeth." The key distinguishing factor a dentist will use to determine the right choice for a patient is the size of the cavity.
“The key distinguishing factor a dentist will use to determine the right choice for a patient is the size of the cavity.”
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Benefits of Inlays and Onlays
Inlays
The key benefits of inlays lie in their durability and strength. They are intended to protect and seal the tooth from further damage using cemented material custom-fit to each tooth. The sealed inlays also protect the tooth from air and food particles from entering the tooth, which causes a sensitive sensation. Before an inlay treatment, the dentist removes all bacteria from inside the tooth and throughout the hole, attaining a higher level of oral hygiene. Inlays are more stable and stay in your tooth for much longer than a filling with proper oral care.
Onlays
Onlays have much of the same benefits as inlays. An added benefit to onlays is they can save much of the patient's tooth structure and provide additional strength and support for the affected tooth. Crowns require treatment and typically involve removing the entire tooth, or at minimum, much of the tooth structure. Onlays are also custom-fit for each patient and use stain-resistant material, making them last much longer without affecting appearance.
“Before an inlay treatment, the dentist removes all bacteria from inside the tooth and throughout the hole, attaining a higher level of oral hygiene.”
Questions Answered on This Page
Q. What is the difference between an inlay and an onlay?
Q. Should I get an onlay or a crown?
Q. What are the key benefits of inlays and onlays?
Q. What is the difference inlay vs. filling?
Q. What is the difference between inlays, onlays, and veneers?
People Also Ask
Q. What are composite fillings?
Q. How can cosmetic dentistry restore teeth?
Q. How can a person's diet help with tooth decay?
Q. How do lifestyle choices affect dental health?
Q. What should patients do if they have sensitive teeth?
Q. How can someone find out what procedures their dental insurance covers?
Inlays, Onlays, and Veneers
While they may seem similar, veneers, inlays, and onlays are not the same. Onlays and inlays are used to fill and protect damage to the chewing service of the tooth, while veneers are used to cover the front of the tooth in areas that show when you smile. Veneers are not typically used to address tooth decay and are used for more cosmetic reasons.
A veneer is a great option for people who want to correct cosmetic flaws or treat a stained tooth, chipped, or crooked. However, veneers do not provide the structural support or protection of an inlay or onlay. To properly address decay or other damage, an inlay or onlay is the preferred choice.
“While they may seem similar, veneers, inlays, and onlays are not the same.”
Frequently Asked Questions about Inlays and Onlays
Q. Does my insurance cover inlays and onlays?
A. Dental insurance coverage varies from person to person. You will want to reach out to your insurance provider directly to find out if they cover inlays and onlays. Our staff will help you determine any out-of-pocket costs.
Q. What is the difference between inlays and onlays?
A. An inlay is meant to fit in the center of a back tooth and covers only a portion of the chewing surface. An onlay will cover more of the tooth, such as the small points or ridges along the sides. Both inlays and onlays are made from impressions of the area so they are a perfect fit.
Q. Can I get an inlay or onlay in one visit?
A. Since inlays and onlays are made off-site, they require two office visits to be put into place. Once the decay and damaged material are removed, our dentist will make an impression of the site to be filled. A temporary covering will protect your tooth between visits.
Q. What can I expect after getting an inlay or onlay?
A. After the procedure, there is usually a little discomfort, but most patients can adapt to the new chewing surface quickly. Sometimes the tissues around the area worked on are sore or the tooth is sensitive to hot and cold. These issues should fix themselves in one or two days.
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Dental Terminology
Learn More About Inlays and Onlays Today
If you are considering replacing your old fillings and crowns or want to schedule a consultation appointment, call us at 310-450-0300 to speak to Westchester Dental Arts. By taking full-mouth X-rays, a custom treatment plan will help to meet your needs.
Helpful Related Links
- American Dental Association (ADA). Glossary of Dental Clinical Terms. 2026
- American Academy of Cosmetic Dentistryยฎ (AACD). Home Page. 2026
- WebMD. WebMD’s Oral Care Guide. 2026
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