Inlays vs. Onlays

Find the Best Fit for Your Smile Between Inlays and Onlays

Knowledge about the differences between inlays and onlays can help you choose between them. Both are intended to fix a damaged or decayed tooth, but there are slight differences that could make one better than the other. At U Smile Dentistry, the more you know about your dental options, the better choice you can make for yourself!

Today, we will highlight these differences and reveal what you should consider when deciding the right option for yourself or your patient between inlays and onlays. If you’re unsure about the differences between inlays vs. onlays, the dentist in Orangeville at U.Smile Dentistry can provide expert advice and treatment options tailored to your needs.

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What are Inlays and Onlays?

Inlays and onlays are indirect restorations made up in a lab by dental technicians. They are used when a tooth has too much damage for a filling but doesn’t require a full crown. These restorations come in porcelain, composite resin, and sometimes in gold. 

Inlays are the same as fillings, restoring the chewing surface of a tooth, especially between the cusps. They fit within the tooth grooves and don’t extend over the cusps. This is the exact thing that makes them perfect for cavities or fractures that don’t affect the outer edges of the tooth. 

Onlays, also known as partial crowns, cover more space than inlays. They can extend in one or more tooth cusps for more significant reconstructions. They are recommended when damage involves the tooth’s chewing surface and one or more edges.

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Critical Differences Between Inlays and Onlays

• Coverage Area

The difference between inlays and onlays is based on the area they cover. Inlays fit between the cusps of a tooth without covering them, which is ideal for damage in the central chewing area. Onlays covers one or more cusps and can extend to a larger surface area, which is suitable for more extensive restoration.

• Function and Use

Inlays are used for damage or decay in the middle of the tooth, not affecting the cusps. Onlays cover more extensive damage, including one or more cusps and possibly the tooth edges. They offer a more thorough solution when a large amount of the original structure is negotiated.

• Strength and Durability

Both inlays and onlays are strong and tough. Onlays provides more protection as they cover a larger area, supporting the tooth and preventing further damage, making them ideal for significantly compromised teeth.

• Aesthetic Considerations

Inlays and onlays can be made from tooth-colored materials like porcelain or composite resin, blending seamlessly with natural teeth. Gold is also an option known for durability, though more noticeable, and is not used in all dental clinics. The material choice depends on personal preference, aesthetic goals, and restoration needs.

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When to Choose Inlays?

Inlays are perfect when damage is limited to the central part of the tooth and the cusps are unaffected. They are ideal for larger cavities that cannot be filled and provide a more durable and long-lasting solution. Inlays blend well with natural teeth, making them great for visible areas, and they restore function and appearance while offering a smooth, easy-to-clean surface. 

To learn about the difference between inlay and onlay, visit the cosmetic dentist in Orangeville at U.Smile Dentistry for expert advice and personalized care.

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When to Choose Onlays?

Onlays are recommended for more extensive damage affecting one or multiple cusps of a tooth, significantly when the overall structure has been weakened and needs support. They offer complete coverage restoration while maintaining a natural tooth structure and eliminating the need for an entire crown. Because of the combination of strength and appearance, onlays are incredibly wonderful for patients with severe decay or structural damage. They also offer protection against further injury.

Benefits of Inlays and Onlays

Inlays and onlays are traditional dental restorations that preserve more natural tooth structure than crowns, maintaining the tooth’s strength and function. They are known for their durability and can last many years with proper care. Unlike traditional fillings, inlays, and onlays resist wear and discoloration, making them a reliable long-term solution. They can be made from materials that match the natural color of your teeth, providing a seamless appearance. Inlays and onlays blend well with existing teeth, making them perfect for visible areas. They offer additional strength and support, particularly beneficial for strengthening teeth weakened by decay or crack. 

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Possible Problems of Inlays and Onlays

While inlays and onlays are usually pleasing dental restorations, they have several problems. The bonding material attaching them to the tooth is a good example, as it can weaken over time, causing dental cavities or failure. Also, if the fit is not exact, this restoration can collect food and plaque, which may lead to cavities or gum infection.

Sometimes, the material, especially ceramics used in the case of both an onlay and an inlay, can break or become chipped under intense biting forces. Tooth sensitivity or allergic reactions to the material might be present in a few patients. Since these restorations are periodically checked during dental visits, they can be managed quickly if any problems arise.

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Procedure for Dental Inlay and Onlay

An inlay or onlay at U Smile Dentistry typically requires two visits. On the first visit, the dentist will remove the damaged area and make an impression of your tooth to place a temporary restoration. During the second visit, your custom-created inlay or onlay is placed, adjusted, and permanently bonded to the tooth.

• Initial Consultation and Tooth Preparation

The dentist will remove the damaged or decayed part of the tooth and prepare it for the inlay or onlay. An impression of the tooth is taken to create a custom restoration. A temporary filling may be placed to protect the tooth while your inlay or onlay is being made.

• Placement of the Inlay or Onlay

The temporary filling is removed, and the new inlay or onlay is checked for fit and appearance. Once adjustments are made, the restoration is bonded to the tooth using a strong dental adhesive. The dentist will then shape and polish the tooth for a natural look.

Inlays vs. Onlays: Which is Best for You?

• Extent of Damage

The size and location of the damage will largely determine whether an inlay or onlay is more appropriate. Inlays are typically used for minor restorations, while onlays are suited for larger areas.

• Tooth Location 

The location of the tooth in your mouth can influence your choice. For example, inlays might be more suitable for front teeth due to their aesthetic nature. At the same time, onlays could be preferable for back teeth that require more strength.

• Material Preference

The aesthetic and functional outcomes can vary depending on the material chosen (porcelain, composite resin, or gold). Porcelain and composite resin are often selected for their natural appearance, while gold is valued for durability.

• Cost Considerations

The cost can vary based on the material used and the complexity of the procedure. At U Smile Dentistry, we provide detailed cost estimates and discuss all available options to help you make an informed decision.

• Long-term Durability: 

Both inlays and onlays are durable, but the choice may depend on your dental needs and lifestyle. For example, a more robust material might be recommended if you grind your teeth.

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Conclusion

Choosing between inlays and onlays depends on the extent of damage, aesthetic preferences, and your teeth’s specific needs. Both offer long-lasting, aesthetically pleasing solutions for restoring damaged teeth and helping you maintain a healthy, beautiful smile. The family dentist in Orangeville at U.Smile Dentistry provides comprehensive dental care for patients of all ages. At U Smile Dentistry, our team guides you through decision-making, ensuring you receive the best care personalized to your unique dental needs. If you are experiencing tooth pain or suspect you may need a restoration, don’t hesitate to contact us for a consultation. 

We look forward to helping you achieve the best oral health and a smile you can be proud of!