If your dentist has recommended an inlay or onlay, you might be wondering what exactly that means—and how it compares to other dental treatments like fillings or crowns. These custom restorations offer a durable, conservative solution for teeth that are too damaged for a filling but don’t need a full crown.
At Dr. Stephen Coates, DDS in Long Beach, we help patients choose the right restoration for their needs and lifestyle. Below are some of the most common questions we hear about inlays and onlays—along with clear, straightforward answers to help you feel more confident about your care.
7 COMMON QUESTIONS ABOUT INLAY AND ONLAY RESTORATIONS
- What’s the difference between an inlay and an onlay?
Both are custom restorations made to fit into or onto a damaged tooth.
- An inlay fits within the cusps (the raised points) of the tooth.
- An onlay covers one or more cusps, making it a more extensive restoration.
Onlays are sometimes referred to as “partial crowns” because they offer more coverage without removing as much tooth structure as a full crown.
- When is an inlay or onlay recommended instead of a filling?
If a cavity is too large for a filling to securely hold or if an old filling has failed, an inlay or onlay is usually the next best step. They’re stronger, longer-lasting, and more precise than traditional fillings—especially for molars and chewing surfaces.
- Are inlays and onlays better than crowns?
They’re not necessarily better, but they are more conservative. If your tooth still has enough healthy structure, an inlay or onlay preserves more of it. Crowns are typically reserved for cases where a larger portion of the tooth needs to be removed or protected.
- What materials are used for inlays and onlays?
We typically use porcelain, which is both strong and natural-looking. Some patients may opt for gold or composite resin, depending on their needs, location of the tooth, or budget.
- Will it match the color of my natural tooth?
Yes. Porcelain inlays and onlays are custom-made to blend seamlessly with your natural enamel, so your restored tooth looks just like the rest of your smile.
- How long do inlays and onlays last?
With good oral hygiene and regular dental visits, they can last 10–15 years or longer. They are more durable than large fillings and resist wear better over time.
- Is the procedure painful or uncomfortable?
Not at all. We use local anesthetic to keep you comfortable during the procedure. Most patients say the experience is similar to getting a filling—just with more custom detail and longer-lasting results.
4 BONUS QUESTIONS ABOUT LIVING WITH INLAYS AND ONLAYS
Even after your restoration is placed, you may have questions about care and longevity. Here are a few more things patients often ask:
- Can I eat normally after the procedure?
Yes, though we recommend soft foods for the first 24 hours. Once fully bonded, your tooth can function just like normal. - Do I need to brush or floss differently?
Not at all—just continue brushing twice daily and flossing once a day to prevent new decay around the restoration. - Can I still whiten my teeth?
Whitening treatments don’t change the color of porcelain. If you’re considering whitening, talk to us before getting your inlay or onlay so we can match your shade. - Will people be able to tell I have one?
No. Porcelain restorations are color-matched and shaped to blend right in. Most people won’t notice a thing.
LET’S HELP YOU CHOOSE THE RIGHT RESTORATION FOR YOUR NEEDS
Choosing between a filling, crown, or inlay/onlay doesn’t have to be confusing. We’ll walk you through your options and help you make the best decision based on your tooth’s condition, your goals, and your long-term oral health.
Have questions or ready to get started?
Click here to schedule your appointment with Dr. Stephen Coates, DDS in Long Beach. Let’s protect your smile with the right care at the right time.


