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What is the purpose of an inlay?

Published in Dental Restoration 3 mins read

An inlay serves as a durable and strengthening dental restoration designed to repair a tooth with decay or damage that is too extensive for a traditional filling but not severe enough to require a full crown.

Purpose and Key Benefits of Dental Inlays

The primary purpose of a dental inlay is to restore the integrity and function of a damaged tooth while also reinforcing its structure. Unlike conventional fillings that are shaped directly within the tooth, an inlay is a custom-made, pre-formed piece that fits precisely into the prepared cavity.

Here's a breakdown of its core purposes and advantages:

  • Structural Reinforcement: A key benefit of an inlay is its ability to strengthen the tooth. Unlike some traditional fillings that can potentially weaken the surrounding tooth structure over time, inlays are designed to actually bolster it. After an inlay procedure, a tooth can bear significantly more chewing force, often 50-75% more than before, enhancing its durability and long-term function.
  • Precise Fit and Customization: Inlays are meticulously crafted in a dental lab to precisely match the unique contours of your tooth cavity. This bespoke fit ensures optimal protection against bacteria and decay, as well as a seamless integration with your natural tooth.
  • Exceptional Durability and Longevity: Once fabricated, the inlay is bonded securely into place, making it incredibly strong and hard-wearing. This robust bond contributes to the inlay's long lifespan, often outperforming traditional fillings.
  • Aesthetic Appeal: Made from materials like porcelain, composite resin, or gold, inlays can be color-matched to your natural teeth, providing a discreet and aesthetically pleasing restoration.

When Are Inlays Used?

Inlays are typically recommended for teeth that have:

  • Moderate decay that affects the chewing surface but does not extend to the cusps (the points of the tooth).
  • Cracked or fractured areas within the tooth structure, where the damage is contained within the cusps.
  • Existing large or failing fillings that need replacement with a more durable and tooth-strengthening option.

Inlay vs. Traditional Filling: A Comparison

Understanding the difference between an inlay and a traditional filling highlights the unique benefits of an inlay.

Feature Dental Inlay Traditional Filling (e.g., Amalgam, Composite)
Fabrication Custom-made in a lab from a mold Shaped and applied directly into the tooth in-office
Tooth Strength Strengthens tooth structure (up to 75% more chewing force) Can potentially weaken tooth structure over time
Fit Precision Extremely precise due to custom fabrication Good fit, but not as exact as a lab-made inlay
Durability Highly durable and long-lasting Good, but generally less durable than an inlay
Usage Moderate decay/damage within cusps Smaller cavities and less extensive damage

For more information on dental restoration options, you can consult reliable sources like the American Dental Association or discuss with your dental professional.