Onlays in Simi Valley
An onlay is often the right answer when a back tooth has too much damage for a filling but still has enough healthy structure that a full crown would remove more tooth than necessary. At 805 Dentistry, Dr. Dar Radfar and our team place onlays for patients from Simi Valley and across the surrounding communities, using them to rebuild teeth with large cavities, worn or broken cusps, or failing old fillings. Our office is in Thousand Oaks, and many Simi Valley families make the trip because they can handle cleanings, restorations, and specialty care in one place.
An onlay is a custom-made restoration that covers the chewing surface of a tooth along with one or more of its cusps, the raised points that do much of the work when you bite and grind food. It sits between a filling and a crown. A filling fills a hole inside the tooth. A crown covers the entire visible tooth. An onlay replaces only the damaged section, often including a cusp that has cracked or weakened, and leaves the healthy walls of the tooth in place.
Because an onlay is made outside the mouth and then bonded into place, it can restore a large area more reliably than a big filling packed in directly. We have an on-site dental lab, which helps our team coordinate the fabrication and fit of restorations like onlays without relying entirely on outside labs. Onlays are closely related to inlays, which we also offer. An inlay stays within the cusps, while an onlay extends over them.
Onlays work well for a range of situations we regularly see in patients from Simi Valley and nearby areas. A tooth may be a good fit if it has:
- A cavity too large for a standard filling to hold up well
- A broken or fractured cusp from biting something hard
- An older, oversized filling that is cracking or breaking down
- Wear or damage on the chewing surface that still leaves the outer walls mostly intact
The main benefit is conservation. Keeping more of your natural tooth matters, because once enamel and dentin are removed they cannot grow back. An onlay also strengthens the tooth by holding the remaining structure together and restoring a natural chewing surface. If damage reaches too deep or most of the tooth is compromised, a crown may be the better choice. If a crack extends toward the nerve, we may involve our board-certified endodontist, who treats cracked teeth. We will explain what we see and why we recommend one option over another.
What happens during an onlay appointment?
Getting an onlay usually starts with an exam and imaging so we can see the full extent of the damage. We offer 2D and 3D dental imaging, which helps us check for decay beneath old fillings and plan exactly how much tooth needs restoring. Once we confirm an onlay is the right fit, we numb the area, remove the decay or failing filling, and shape the tooth so the onlay will fit securely.
Next, we record the shape of the prepared tooth so the onlay can be made to match your bite, and we protect the tooth in the meantime. When the onlay is ready, we check the fit and contacts with neighboring teeth, adjust the bite as needed, and bond it in place. Patients who feel nervous about dental work have options. We offer nitrous oxide, oral sedation, and IV sedation, and we have a board-certified dental anesthesiologist on staff.
How do I care for an onlay, and how can I pay for it?
You care for an onlay much as you care for your natural teeth: brush twice a day, floss daily, and keep up with regular cleanings and exams. The edges where the onlay meets your tooth still need careful cleaning, because new decay can form there if plaque builds up. During routine visits, we check the margins and your bite to catch small issues early.
It also helps to avoid chewing ice, hard candy, or other very hard objects. If you clench or grind at night, tell us. We offer night mouth guards, and because our practice has a strong focus on TMJ treatment, we can look at jaw-related habits that put extra force on your restorations.
As for cost, 805 Dentistry accepts all major PPO insurance plans and welcomes self-pay patients. Financing is also available for patients who prefer to spread out the cost of treatment. Coverage for onlays varies by plan, so our team can review your benefits with you before we begin. That way, Simi Valley patients know what to expect before they commit to treatment.
If you have a cracked cusp, a large old filling, or a tooth that has started to feel sensitive when you bite, contact our office to schedule an exam. We will look closely, talk through your options, and help you decide whether an onlay is the right way to protect your tooth.