Dental inlays and onlays are advanced restoration options designed to repair damaged or decayed teeth, particularly when traditional fillings aren’t strong enough, but a full crown isn’t necessary. These custom-made solutions not only restore the tooth's structure and function but also help preserve as much of the natural tooth as possible.

Inlays fit neatly within the grooves of a tooth, repairing localized damage, while onlays cover a larger area, extending over one or more cusps and possibly the biting surface. Both provide long-lasting protection and strength, making them a durable choice for restoring teeth that have sustained significant damage.

Why choose inlays and onlays?

When back teeth experience moderate to severe decay or damage, white fillings may not provide sufficient strength to restore the tooth. In such cases, inlays and onlays are often the recommended solution. These restorations are custom-crafted to fit the damaged area precisely, offering a conservative yet robust approach to dental restoration. Unlike crowns, they require minimal removal of healthy tooth material, helping to preserve your natural tooth structure.

Available in materials like porcelain, composite resin, ceramic, or gold, inlays and onlays blend durability with aesthetics. Porcelain and composite resin options are particularly popular for their natural appearance, seamlessly matching the color of your teeth. With proper care, these restorations can last ten years or more, making them a reliable and enduring solution.

What are inlays?

Inlays are tailored to repair the grooves within a tooth’s surface. They are ideal for restoring strength and function in cases where damage or decay is confined to the central chewing area. Inlays are crafted from durable materials that provide stability while maintaining a natural look, making them a preferred choice for patients seeking both functionality and aesthetics.

What are onlays?

Onlays, sometimes referred to as "partial crowns," are used when the damage extends beyond the grooves to one or more cusps of the tooth. They cover a larger surface area, including the biting surface, offering comprehensive protection and support. Onlays are custom-made as a single, solid restoration that restores the tooth’s strength, stability, and appearance. While waiting for the permanent onlay to be fabricated in a dental laboratory, a temporary onlay is placed to protect the tooth.

Onlays are especially beneficial for preserving the remaining healthy tooth structure while preventing further damage. They are a durable option for repairing extensive decay or fractures and provide a seamless, natural appearance.

Benefits of inlays and onlays

Inlays and onlays offer numerous advantages over traditional fillings and full crowns, including:

• Preservation of Natural Tooth Structure: These restorations require less removal of healthy tooth material, supporting long-term oral health.
• Durability: Made from strong materials like porcelain, ceramic, or composite resin, inlays and onlays can withstand years of wear and tear.
• Aesthetic Appeal: They blend seamlessly with your natural teeth, restoring your smile without compromising appearance.
• Long-Term Solution: With proper care, inlays and onlays can last over a decade, reducing the need for further dental work.
• Functionality: By reinforcing the tooth’s structure, they restore chewing function and prevent further damage.

The procedure: What to expect

Getting an inlay or onlay typically requires two appointments. Here’s what you can expect:

First Visit – Tooth Preparation

• The process begins with your dentist numbing the area with a local anesthetic.
• All decayed or damaged material is carefully removed, leaving a clean and stable base for the restoration.
• An impression is taken of the prepared tooth, which is sent to a dental laboratory for the custom fabrication of your inlay or onlay.
• A temporary filling or onlay is placed to protect the tooth while your permanent restoration is being made. This process typically takes about two weeks.

During this time, it’s important to care for the temporary restoration. Avoid chewing on the affected side and contact your dentist if the temporary filling becomes dislodged.

Second Visit – Fitting the Inlay or Onlay

• Once the permanent restoration is ready, it is carefully bonded to the tooth using a strong dental adhesive.
• The dentist ensures a precise fit and proper alignment with your bite, polishing the restoration for a smooth, natural finish.
• The result is a durable, custom restoration that strengthens the tooth and enhances its appearance.

Maintaining your inlay or onlay

To ensure the longevity of your inlay or onlay, practice good oral hygiene by brushing twice daily and flossing regularly. Visit your dentist for routine check-ups and cleanings to monitor the restoration and overall dental health. With proper care, inlays and onlays can protect your teeth and maintain their function for years to come.

Inlays and onlays provide a durable, aesthetically pleasing solution for repairing damaged teeth while preserving their natural structure.