In the past, dental cavities were primarily treated with silver amalgam (mercury) fillings. However, many general and cosmetic dentists, including Dr. Haas in Toronto, now avoid using mercury fillings due to concerns about potential mercury exposure, which has been linked to neurological and kidney issues, as well as their unsightly appearance.

Today, the preferred methods for cavity restorations include:

• Composite fillings
• Dental inlays
• Dental onlays

Dental inlays and onlays are effective solutions for repairing mildly to moderately decayed or structurally damaged teeth, such as those with cracks or fractures. While porcelain is a popular material for these restorations, composite resin and certain metals can also be used. At our North York dental clinic, we prefer lab-fabricated reinforced resin because it offers a natural appearance, exceptional durability, and better resistance to wear and staining compared to porcelain or metal. In most cases, dental inlays and onlays blend seamlessly with the surrounding teeth, allowing patients to maintain a healthy, confident smile.

Difference Between Dental Inlays and Dental Onlays

• Dental Inlays: When decay or damage is confined to the grooves (cusps) of a tooth, a dental inlay is custom-made to fit within the natural indentations of the tooth's chewing surface.
• Dental Onlays: If the damage extends beyond one or more cusps of the tooth, a dental onlay is used. Onlays cover a larger surface area and reinforce the tooth for enhanced strength and protection.

The Dental Inlay and Onlay Process

1. The decayed area or an old filling is carefully removed.
2. An impression of the tooth is taken to create a precise, custom-made inlay or onlay in a dental laboratory.
3. A temporary restoration is placed on the tooth while waiting for the final inlay or onlay.
4. Once ready, the custom-fitted inlay or onlay is securely bonded to the tooth for a seamless, long-lasting result.

Advantages of Reinforced Resin Dental Inlays and Onlays

• Advanced polymerization and low water solubility enhance strength, hardness, and structural integrity.
• The material can be matched to the patient's natural tooth color and polished for a smooth, glossy finish.
• Natural-looking, translucent materials make inlays and onlays virtually undetectable, allowing patients to smile with confidence.
• Exceptional durability, with wear resistance similar to natural tooth enamel.
• Unlike older composite materials, reinforced resin resists staining, ensuring a long-lasting, aesthetic result.

Inlays and onlays are considered indirect restorations, meaning they are custom-made outside the mouth as a single, solid piece tailored to the shape of the decayed tooth. They are larger than traditional fillings but smaller than crowns, making them an ideal solution for treating moderate decay.

For those in North York looking for a strong, aesthetic, and long-lasting solution for cavity repair, dental inlays and onlays are an excellent option compared to traditional fillings. Contact our dental team today to learn more about how inlays and onlays can enhance your oral health and smile!