Inlays & Onlays

Learn more about Dental Inlays and Onlays

Inlays and Onlays are restorations used to repair back teeth with a crack, fracture or with mild to moderate decay. They are used when the damage to the tooth's structure is not serious enough to warrant a Crown but can't be treated with a Filling. The tooth must also have enough healthy tooth root remaining, if it does not you may still require a Crown.

Benefits of having an Inlay or Onlay in comparison to a metal filling

  1. Inlays and Onlays are durable — they’re made from tough, hard-wearing materials which last up to 30 years.
  2. They help to strengthen teeth by up to 75%, unlike traditional metal fillings which can actually reduce the strength of the teeth by up to 50%.
  3. Inlays and Onlays prolong tooth life and may prevent the need for more dental treatment in the future.

Dental inlays and Onlays are used when old fillings need to be removed or replaced. A dental inlay is similar to a filling and fits inside the cusp tips (top edges) of the tooth. A dental onlay is more extensive and extends over the cusps of the treated tooth.

During treatment, the dentist removes the old fillings under local anaesthesia and takes an impression of the tooth, which is sent to the dental laboratory. The new inlay or onlay is made from this mould in porcelain, gold or composite resin material. The inlay or onlay is then cemented into place at the next appointment. The inlay or onlay should blend successfully with the treated tooth and the rest of the teeth to achieve a natural, uniform appearance.

How long does it take to get an inlay or onlay?

It typically takes two appointments for the inlays and onlays treatment to be completed and to be finally bonded to the damaged area of the tooth.

What is the process for getting an inlay or onlay?

Inlays and Onlays are performed using very similar procedures. At the first appointment, your dentist begins the procedure by numbing the area to be treated with a local anaesthetic. Any decay or damage is removed by drilling, which cleans and prepares the tooth for the dental inlay or onlay.

Using a small tray filled with dental putty that fits over the teeth, the dentist takes a mould (impression) of the damaged tooth. This impression is sent off to the dental laboratory, where a dental inlay or onlay is created that will fit your tooth exactly. While the inlay or onlay is being created at the lab, the dentist creates a temporary restoration (cover or filling) for your tooth to protect it until your next appointment.

At the second appointment, your dentist will remove the temporary restoration and then take the time to ensure the inlay or onlay fits correctly. Only when the inlay or onlay fits perfectly will the dentist bond the inlay or onlay to the tooth with a strong resin adhesive. The inlay and onlay treatment is completed with a polish to ensure a smooth and aesthetically pleasing finish.

How will I feel after the treatment?

There will probably be a little discomfort after the inlay or onlay procedure, and the new tooth surface may feel a little odd, but you soon get used to the new tooth surface and how it feels and looks in your mouth. The tissue around the treated tooth may feel sore or sensitive, but this should subside in a couple of days. If you do feel some discomfort, you can take over-the-counter pain medication to alleviate the symptoms.

For more information about Dental Inlays and Onlays please contact us to book an appointment on 0116 267 4254, email or complete the Make an Enquiry form below.

Difference between  an Inlay, Onlay & Crown

Difference between an Inlay, Onlay & Crown