When a tooth is damaged or decayed but doesn’t require a full dental crown, inlays and onlays offer durable and natural-looking solutions.
Both options are custom-made restorations that repair and strengthen a tooth while preserving as much healthy structure as possible. Choosing between inlays and onlays depends on the size and location of the damage, your bite alignment, and your long-term oral health goals. Understanding the differences can help you make an informed decision with your dentist.
Dental inlays are ideal for smaller areas of damage, often confined to the chewing surface between the cusps of a tooth. They’re used when a cavity or old filling is too large for a simple filling but doesn’t require a crown. Porcelain, composite resin, or gold inlays blend seamlessly with your natural teeth and provide a strong, precise fit. On the other hand, dental onlays (sometimes called partial crowns) cover one or more cusps and are used for more extensive damage, providing additional reinforcement to the tooth structure.
Both inlays and onlays offer important benefits.
They are stronger and longer-lasting than traditional fillings, resist staining, and help maintain the natural shape and function of your tooth. Because they are fabricated in a dental lab, they require at least two visits, including one for preparation and impressions, and another for bonding the final restoration. The investment pays off with excellent durability and a natural appearance that can last a decade or more with proper care.
To determine whether an inlay or onlay is right for you, your dentist will evaluate the extent of the damage, your bite, and your personal preferences for materials. If you want a restoration that balances aesthetics, strength, and tooth preservation, both options are excellent choices. With proper oral hygiene and regular checkups, inlays and onlays can protect your tooth, restore your smile, and help you maintain long-term dental health.