Fort Worth Restorative & Cosmetic Dentist
Porcelain Inlays & Onlays in Fort Worth, Texas
The ideal middle ground between a filling and a crown. Custom laboratory-crafted porcelain restorations that repair significantly damaged teeth with precision — preserving more natural tooth structure than a crown, and up to 75% stronger than a direct filling.
- Stronger Than Fillings by 75%
- More Conservative Than Crowns
- Lasts 10–30 Years
- Natural-Looking Porcelain
What Are Porcelain Inlays & Onlays?
When more than half of a tooth's biting surface is damaged by decay, a crack, or a failing old filling, a simple direct filling is no longer the best solution. But the damage may not yet be severe enough to warrant a full dental crown. This is exactly where inlays and onlays excel.
Unlike direct fillings that are packed into the tooth chairside, inlays and onlays are precision-crafted in a dental laboratory to fit your tooth exactly — then permanently bonded in place. The result is a restoration that fits with microscopic precision, seals the tooth completely, and dramatically increases the tooth's structural strength.
Traditional fillings can actually reduce a tooth's strength by up to 50%. Inlays and onlays bonded with high-strength resin work in exactly the opposite way — they can increase the strength of a damaged tooth by up to 75%, and can last anywhere from 10 to 30 years with proper care.
- Laboratory-fabricated for a perfect, precise fit
- Bonded with high-strength resin for maximum durability
- Preserves more natural tooth than a crown
- Porcelain matched to the exact shade of your teeth
Inlay vs. Onlay vs. Crown — Which Is Right for Your Tooth?
The right restoration depends on how much of the tooth is damaged. Dr. Brown will assess your tooth and recommend the most conservative option that adequately restores its strength and function.
Dental Inlay — similar to a filling, but fabricated in a laboratory and bonded in place rather than packed directly into the tooth. It fits entirely within the raised edges (cusps) of the back tooth — repairing the inner biting surface without covering any of the surrounding cusps.
Dental Onlay — a more substantial restoration than an inlay. It covers the inner damaged surface of the tooth and extends over one or more of the surrounding cusps. Sometimes called a "partial crown," an onlay is the preferred option when damage extends to the cusps but a full crown is not yet warranted.
Dental Crown — encases the entire visible portion of the tooth. It provides the maximum protection for severely damaged, fractured, or root-canal-treated teeth where there is insufficient healthy structure remaining for an inlay or onlay — but removes more natural tooth structure.
Why Inlays & Onlays Are Stronger Than Fillings
When a direct filling is placed, the tooth structure must be shaped in ways that accommodate the filling material — which can leave the remaining walls of the tooth thin and vulnerable. Over time, the expansion and contraction of filling materials can create micro-cracks in the surrounding tooth.
Inlays and onlays work differently. Because they are fabricated outside the mouth from a precise impression, they fit the prepared cavity with exceptional accuracy. When bonded with high-strength dental resin, they effectively reinforce the remaining tooth structure from the inside — like a key fitting a lock. The result is a tooth that is measurably stronger than it was before.
Material Options
Inlays and onlays can be made from three main materials. Dr. Brown most commonly recommends porcelain for its superior aesthetics and proven durability.
- Porcelain — tooth-colored ceramic matched precisely to your natural tooth shade; highly aesthetic, durable, and biocompatible. Dr. Brown's preferred material
- Gold — the original inlay material; exceptionally durable and wear-resistant, still preferred by some patients for posterior teeth, though not tooth-colored
- Composite resin — tooth-colored resin fabricated indirectly in a laboratory for a better fit than a direct filling; less stain-resistant than porcelain but may be preferred in certain cases
How Inlays & Onlays Are Made & Placed — 2 Appointments
The process is straightforward and comfortable. At the first appointment, Dr. Brown removes the damaged or decayed tooth structure and any existing failing filling under local anaesthesia, shapes the tooth precisely, takes an impression for the master dental laboratory, and places a temporary sealant. At the second appointment (usually 1–2 weeks later), the temporary is removed and the custom restoration is checked for fit, color, and bite, then permanently bonded with high-strength dental resin and polished to a smooth, natural finish.
Between appointments, the temporary sealant protects your prepared tooth. You can eat and function normally, but avoid very sticky or hard foods on that side, brush and floss gently around the temporary, and if the temporary feels loose or falls out, call us immediately at (817) 920-0882.
- Appointment 1 — damaged structure removed, precise impression taken, temporary sealant placed
- Impression sent to a master dental laboratory for custom fabrication
- Appointment 2 — restoration checked for fit, color & bite, then permanently bonded
- Polished to a smooth, natural finish — done
When Are Inlays & Onlays the Right Choice?
Other restorations may be better when the damage is small (a direct composite filling may be sufficient), the tooth is severely fractured or structurally compromised (a crown may be needed), the tooth has had a root canal (a crown provides better post-RCT protection), or so little structure remains that an inlay/onlay cannot bond adequately. Dr. Brown always recommends the most conservative option — meaning the least invasive treatment that properly restores the tooth.
- More than half of the tooth's biting surface is damaged or decayed
- An existing large filling has failed or is cracked
- There is decay so extensive that a direct filling won't hold adequately
- The tooth is cracked or fractured within the cusp area
- Damage extends to one or more cusps but not the entire tooth surface
- You want a long-lasting, tooth-colored restoration for a back tooth
Insurance & Financing for Inlays & Onlays
Unlike purely cosmetic procedures, inlays and onlays are restorative treatments — meaning many dental insurance plans provide partial coverage for them as medically necessary dental care. Coverage levels vary by plan and material choice.
Our administrative team will verify your exact benefits before treatment begins and provide a clear written cost estimate with no surprises. For any amount not covered, flexible financing options are available with low and 0% interest options.
- Brush twice daily and floss daily — treat it like a natural tooth
- Attend 6-monthly checkups so Dr. Brown can inspect the restoration
- Avoid biting ice, hard candies, or non-food objects
- Wear a night guard if you grind your teeth during sleep
- Alert Dr. Brown immediately if bite feels uneven or restoration feels loose
Your Questions Answered
Frequently Asked Questions
What is the difference between an inlay and an onlay?
Both are custom laboratory-fabricated restorations bonded to damaged back teeth — but they differ in how much of the tooth they cover. An inlay fits entirely within the raised edges (cusps) of the tooth — similar to a filling but laboratory-made for superior fit and strength, used when damage is confined within the cusp tips. An onlay extends over one or more of the tooth's cusps in addition to the inner surface — a larger restoration used when damage or decay has reached the cusps themselves, sometimes called a "partial crown." Dr. Brown will determine which type is appropriate based on the extent and location of your tooth damage.
How long do inlays and onlays last?
Porcelain inlays and onlays are exceptionally durable. With proper care, they typically last 10 to 30 years — significantly longer than direct composite fillings (5–10 years) and comparable to dental crowns. To maximise the lifespan of your inlay or onlay: maintain good oral hygiene by brushing twice daily and flossing daily, attend your 6-monthly dental checkups so Dr. Brown can monitor the restoration, avoid biting on ice, hard candies, or very hard foods, and wear a night guard if you grind your teeth during sleep.
Are inlays and onlays better than fillings?
For large areas of damage, inlays and onlays are significantly superior to direct composite fillings in multiple ways. They are stronger — traditional fillings can reduce tooth strength by up to 50%, while bonded inlays/onlays can increase it by up to 75%. They are more durable — lasting 10–30 years vs 5–10 years for fillings. They fit better — laboratory fabrication gives a more precise marginal seal, reducing the risk of new decay forming at the edges. And they are more aesthetic — porcelain provides superior color matching and a more natural appearance. For small cavities, a direct filling is still perfectly appropriate and more efficient. Dr. Brown will always recommend the most conservative option that adequately addresses the damage.
What is the difference between an onlay and a dental crown?
A dental crown covers the entire visible surface of the tooth above the gum line — requiring significant removal of natural tooth structure to create space for the crown. An onlay covers only the damaged portion and affected cusps, leaving all remaining healthy tooth structure intact. When damage is not severe enough to warrant a full crown, an onlay is the more conservative and often preferable option — preserving significantly more of the natural tooth. Dr. Brown's philosophy is always to use the most conservative restoration that adequately restores the tooth. If an onlay can do the job, a crown will not be recommended.
How many appointments do inlays and onlays take?
Inlays and onlays require two appointments to complete. At Appointment 1, the tooth is prepared, a precise impression is taken and sent to the laboratory, and a temporary sealant is placed. At Appointment 2 (1–2 weeks later), the temporary is removed, the custom restoration is checked for fit and bite, then permanently bonded and polished to a smooth finish. Both appointments are performed under local anaesthesia for your comfort. Most patients find the procedure straightforward and far less involved than they anticipated.
Are porcelain inlays and onlays covered by insurance?
Many dental insurance plans provide partial coverage for inlays and onlays since they are restorative procedures addressing tooth damage — not purely cosmetic treatments. Coverage levels vary significantly by plan and material choice. Our administrative team will verify your specific benefits before treatment begins and provide a clear, written cost estimate. For any amount not covered, flexible financing options are available. Call us at (817) 920-0882 to discuss your options.
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Restore Your Tooth the Right Way — Stronger, Longer-Lasting, Natural-Looking
If you have a damaged back tooth with a large failing filling, an inlay or onlay may be exactly the right solution — more conservative than a crown, and far stronger than a replacement filling. Dr. Brown will give you an honest assessment at your consultation.