When you have tooth damage that a filling can’t fix but a full crown seems unnecessary, dentists often recommend inlays or onlays. Both options restore strength, function, and appearance, but they serve slightly different purposes. Understanding how each treatment works can help you choose the best option for your dental needs.
Below, we will compare inlays and onlays and explain when dentists choose each one.
What Is an Inlay?
Dentists use inlays to repair damage that lies within the center or grooves of a tooth. Inlays fit inside the tooth’s chewing surface without extending the cusps.
How Inlays Work
Dentists remove the decay, clean the tooth, and take a digital or physical impression. A lab then creates a custom inlay using porcelain, ceramic, or composite resin. During your follow-up visit, your dentist bonds the inlay securely in place.
When Inlays Work Best
Dentists usually recommend inlays when:
- You have moderate tooth decay that doesn’t affect the tooth cusps.
- You need a stronger, long-lasting option as opposed to traditional filling.
- You want a natural-looking restoration that blends with your tooth.
Inlays reinforce the tooth’s integrity while preserving more of its natural structure than a crown.
What Is an Onlay?
Onlays repair a longer portion of the tooth. Unlike inlays, onlays extend over one or more cusps, restoring both the center and outer edges of the tooth.
How do Onlays Work?
The dentist removes the damaged tissue and prepares the tooth, similar to the inlay process. A dental lab creates the onlay to fit precisely over the affected areas, and the dentist bonds it into place.
When Onlays Work Best
Dentists typically recommend onlays:
- Damage reaches one or more cusps.
- A filling or inlay cannot safely support the tooth.
- You want to avoid removing the extra tooth structure for a full crown.
Onlays strengthen the weakened areas and protect the tooth from further cracking or wear.
How to Choose Between an Inlay and an Onlay
Your dentist evaluates your tooth’s damage, strength, and decay level before recommending an option.
In general:
- Choose an inlay for a smaller, contained decay that doesn’t affect the cusps.
- Choose an onlay when the damage is more extensive and you need extra reinforcement.
Both options offer long-lasting durability, natural appearance, and a more conservative approach than crowns. However, it is best to consult with your dentist first regarding which option is better suited to your dental needs.
Final Thoughts: Which Option Supports Your Dental Health Best
Choosing between an inlay and an onlay depends on the size of your cavity, the strength of your tooth, and the level of damage present. As mentioned above, inlays work best for smaller damage or contained areas of decay, whereas onlays provide protection when the damage is slightly bigger. Both options offer a natural-looking solution that provides long-term stability.
If you’re unsure which option you need, the dentists at DentaLand Dentistry can help you with your treatment plan. Book your appointment by contacting us at (832) 674-8377.