An onlay or overlay is a custom-designed restoration used to rebuild and protect a damaged tooth while preserving as much natural structure as possible.

Rather than covering the entire tooth like a traditional crown, it is precisely crafted to restore only the area that needs support — allowing for a more conservative, thoughtful approach.

Why is it done?

When a tooth has a large filling, fracture, or weakened structure, it may no longer be strong enough to handle everyday function.

In these cases, an onlay or overlay provides reinforcement while maintaining the integrity of the remaining healthy tooth — helping prevent further breakdown over time.

Advantages of onlays and overlays over crowns

• A more conservative approach that preserves healthy tooth structure

• Strong, durable bonding to natural enamel

• Margins are often kept above the gumline for better long-term health

• Designed to blend naturally with your tooth

• Restores strength while maintaining a more natural foundation