Inlays and Onlays are custom fillings, fabricated in a lab. They use the existing tooth as a base and fit the inlay or Onlays onto the tooth in an area that has been prepared by the dentist. This is done to strengthen the tooth, restore its shape, and prevent future damage. An Inlay is done when there is no damage to the cusps of the tooth and the restoration can be placed right in the prepared area. An Onlay is used when the damage is a little more extensive, such as decay or a break in the tooth that involves one cusp or more. The decayed area of the tooth is first removed during the procedure. If the tooth is broken, the area is smoothed and shaped to better accept the Onlay. An impression of the tooth is then taken and sent to the lab. The restoration takes about 1-2 weeks to make, so a temporary inlay or onlay will be placed on the tooth during that time.
During the next visit, the inlay or Onlay will be placed into the mouth and set with a cement. An Onlay is a conservative option for restoring a tooth where a crown might otherwise be required. Ask our team if this is a good option for you.

Frequently Asked Questions About Inlays and Onlays
What are inlays and onlays used for?
Inlays are a special type of filling that can address cavities and other damage, while onlays take care of more severe damage done to the cusps of a tooth. Both are cemented to the tooth after the damaged portion of the tooth is removed or prepared.
How are inlays and onlays done?
Inlays and onlays require two appointments to complete the procedure. During the first visit, the filling being replaced or the damaged or decaying area of the tooth is removed, and the tooth is prepared for the inlay or onlay.
Are onlays painful?
Some minor discomfort in the area is possible following the crown or onlay. Sometimes, depending on circumstances, the tooth and surrounding tissues may remain sore for a few weeks post treatment. The three most common reasons for pain are: Sore jaw joint from having your mouth open for a prolonged time.
What are inlays and onlays — and when are they recommended?
Inlays and onlays are precise restorations crafted in a dental lab to fix compromised tooth structure. Inlays sit within the grooves of a tooth when damage hasn’t impacted the chewing surface. Onlays cover one or more cusps when the damage is more extensive. They’re ideal when a tooth needs reinforcement but doesn’t require a full crown. Patients who want a durable, conservative treatment often choose inlays or onlays because they provide a stronger alternative to standard fillings while saving more of the natural tooth.
How is the inlay or onlay procedure performed?
The process usually takes place in two visits. First, your dentist will remove decay or old fillings and shape the tooth to accept the restoration. An impression is then taken, and a temporary restoration is placed while your custom inlay or onlay is crafted. When it’s ready, you’ll return for a second appointment to bond it securely.Â
Are inlays and onlays painful?
Most patients experience minimal discomfort. You might feel some sensitivity in the days following treatment, which typically subsides on its own. Any soreness may stem from keeping your mouth open during the visit or the bonding process, but mild over-the-counter pain relief can help if needed. Local anesthesia is used during the procedure itself, so you should remain comfortable throughout your appointment.
What benefits do inlays and onlays offer?
These restorations conserve as much healthy tooth structure as possible, preserving strength and function. They blend seamlessly with your natural tooth, resist staining better than traditional fillings, and can more effectively support chewing forces. Inlays and onlays are a smart, long-lasting choice when permanent damage isn’t extensive. They also provide a highly customized fit, reducing the risk of bacteria seeping around the edges, which helps protect against future decay.
How long do inlays and onlays last?
With diligent oral care—including daily brushing, flossing, and routine dental check-ups—these restorations often endure for many years. Their lifespan varies depending on material, placement, and bite forces, but well-maintained inlays and onlays are known for their impressive durability. Choosing high-quality ceramic or composite materials and avoiding damaging habits like chewing ice or opening packages with your teeth can further extend their longevity.
How should I prepare for the treatment?
Before treatment, continue your usual oral hygiene routine. Let your dentist know about any medical conditions or medications you’re taking. On the day of the procedure, avoid eating excessively before your visit—this can make the process more comfortable and efficient.Â
What should I expect after the procedure?
After the inlay or onlay is placed, you’ll return to normal function quickly. The restoration will feel natural when you chew and mimic the look of your real tooth. You may notice slight sensitivity for a day or two, but it usually resolves quickly. Following your dentist’s after-care instructions, such as avoiding sticky foods for the first 24 hours, will help the bond settle properly and keep the tooth comfortable.
Who can perform this treatment near me?
If you’re in Surrey, BC, our team of dentists at Surrey Place Dental delivers refined, patient-focused care for inlays and onlays. Their attention to detail, lab-supported precision, and gentle approach make them a reliable choice for restoring strength and appearance to damaged teeth.
