Inlays and Onlays are advanced, custom-made restorative treatments used when a cavity or existing filling is too large for a conventional dental filling but not extensive enough to require a full dental crown. These “partial crowns” are fabricated outside the mouth (indirectly) from highly durable materials like porcelain. At Prime Smile Dental, we recommend Inlays and Onlays to conservatively restore the tooth’s structure, strengthen the biting surface, and provide a repair that is more precise, stronger, and longer-lasting than a large filling.
Inlays and Onlays are distinct from traditional fillings because they are fabricated as a single, solid piece based on a precise impression of the prepared tooth and then permanently bonded into place. This indirect method allows for maximum strength and a perfect fit.
We primarily use aesthetically superior and highly durable materials, such as porcelain (ceramic) or high-strength composite resin, to ensure longevity and a seamless appearance.
Unlike a crown, which requires substantial tooth reduction, Inlays and Onlays only necessitate the removal of the decayed or damaged area, preserving significantly more healthy tooth structure.
The indirect fabrication process results in a stronger, more resilient restoration than a large composite filling, capable of withstanding heavy biting forces for years.
Onlays provide essential structural support by reinforcing compromised cusps, preventing them from breaking under pressure.
Because they are fabricated in a lab, they offer a highly precise fit that reduces the risk of leakage, recurrence of decay, and material shrinkage common with large direct fillings.
This treatment is typically completed over two visits:
Step 1Preparation and Impression
The tooth is numbed with local anesthesia. The dentist removes all decay and old filling material. The tooth is then meticulously shaped. A precise digital scan or physical impression is taken of the prepared site and sent to the dental lab. A temporary restoration is placed for protection.
Step 2Lab Fabrication Period
A specialized dental laboratory crafts the custom Inlay or Onlay using high-strength ceramic, ensuring the color, contour, and contact points are perfect (typically 1–2 weeks).
Step 3Cementation
The temporary restoration is removed. The final Inlay or Onlay is placed on the tooth, checked meticulously for fit and bite accuracy, and then permanently bonded using a strong adhesive cement.
Step 4Final Polish:
The restoration is polished to a smooth finish to prevent plaque accumulation.
Inlays and Onlays are the preferred restoration option for patients who have:
Existing large metal (amalgam) or composite fillings that need replacement due to wear, leakage, or fracture.
A cavity that is too large for a conventional filling but has not structurally compromised the entire tooth (which would require a crown).
Damage that extends to one or more cusps (requiring an Onlay) where the remaining cusps and tooth structure are healthy.
Patients seeking a highly durable, long-lasting restoration that offers superior aesthetics to a large posterior filling.
The cost of inlays and onlays in Aurora depends on the size and location of the restoration and the material recommended. Inlays and onlays are often used when a tooth has moderate damage or decay that’s too extensive for a standard filling but doesn’t require a full crown. Pricing can vary based on how much of the tooth needs to be rebuilt, whether the restoration is placed on a back tooth with heavier biting forces, and whether additional steps are needed such as removing old fillings or addressing cracks.
At Prime Smile Dental in Aurora, Ontario, we assess the tooth carefully and explain whether an inlay, onlay, or crown is the best option for long-term strength and comfort. After your exam, we provide a clear treatment plan and an estimate before starting. Our team can also help review your insurance or CDCP information and explain expected costs whenever possible.
Inlays and onlays at Prime Smile Dental are planned and placed under the guidance of Dr. Shideh Khalilakbar, our lead dentist. Dr. Khalilakbar focuses on conservative restoration—preserving as much healthy tooth structure as possible while restoring strength and function. She carefully evaluates the bite and tooth structure, then ensures the final restoration fits comfortably, seals properly, and blends naturally with your tooth.
Choosing a dental clinic is about more than services, it’s about feeling comfortable, informed, and confident in your care. At Prime Smile Dental in Aurora, we focus on clear communication, a calm environment, and consistent clinical standards for every patient.
We take time to listen to your concerns, explain findings in plain language, and walk you through treatment options so you can make informed decisions.
We accept CDCP and work with most dental insurance plans. Our team can help you understand coverage, billing, and expected costs before treatment whenever possible.
From a welcoming atmosphere to a gentle approach, our team works to make appointments feel calm and manageable—especially for patients who feel anxious about dental visits.
We use updated tools and thorough assessments to support accurate diagnosis and thoughtful treatment planning, with your long-term oral health in mind.
A crown covers the entire visible tooth structure (all five surfaces), while an Onlay covers only the decayed area and protects one or more cusps, leaving a significant portion of the original tooth intact.
Due to their superior material and single-unit fabrication, Inlays and Onlays typically last 10 to 15 years, often rivaling the lifespan of a full crown, which is much longer than a large conventional filling.
Yes. If your old amalgam filling is large and compromised, replacing it with an Inlay or Onlay is an ideal way to restore strength and aesthetics while minimizing the risk of future fracture.
No. The decay removal and preparation are performed under local anesthesia, ensuring the entire process is comfortable. You will wear a temporary restoration between visits, which may cause mild, temporary sensitivity.
If you have a damaged tooth, a large cavity, or an old filling that needs replacement, book an inlays and onlays consultation at Prime Smile Dental in Aurora. Call the clinic or request an appointment online to schedule an assessment and review your options.
