Your tooth is cracked or decayed, but not so badly that it needs a full crown. An onlay could be the right solution. It covers the damaged part of the tooth while preserving as much healthy structure as possible.
Dental onlays are sometimes called partial crowns. They are made from porcelain, composite resin, or gold and are custom-made to fit your tooth precisely.
When Is an Onlay Better Than a Crown?
A crown covers your entire tooth down to the gum line. This means your dentist removes a significant amount of healthy enamel to make room for it. An onlay only covers the damaged or decayed portion.
If your tooth has a large filling that is failing, a crack that does not reach the root, or decay too extensive for a normal filling but not severe enough for a crown, an onlay is often the better choice.
The more natural tooth you keep, the better your long-term prognosis. A crown that covers everything can sometimes make the tooth more prone to fracture years later.
What Is the Process for Getting an Onlay?
At the first appointment, your dentist removes the decay or old filling and shapes the remaining tooth structure. An impression is taken and sent to a dental laboratory. A temporary filling protects the tooth while the onlay is being made.
At the second visit, the temporary filling is removed and the onlay is fitted. Your dentist checks the bite and how it sits against the opposing tooth. Once satisfied, the onlay is permanently bonded to your tooth with dental cement.
How Long Does an Onlay Last?
With good care, an onlay can last 10 to 15 years or longer. Porcelain onlays are popular because they match the colour of your natural teeth. Gold onlays are extremely durable and suit back teeth where strength is the priority.
The main risk is debonding — the onlay coming loose — or a new cavity forming around the edges. This is why thorough brushing and regular dental check-ups are essential.
Is an Onlay Right for Your Tooth?
Not every damaged tooth is suitable. If the remaining structure is too weak to support an onlay, a crown may be necessary instead. Your dentist will assess the extent of the damage and recommend the most appropriate option.
If you want to preserve as much of your natural tooth as possible, ask your dentist whether an onlay is a viable option for you.
Call 01323 723757 or book at www.meadsdental.com
Meads Village Dental Practice