They are made to fit into the shape of the part of the tooth that is damaged. Inlays fit into the grooved surface of the tooth. An onlay is like an inlay but slightly larger and moulded to cover one or more of the raised parts of the tooth known as a cusp. It can also repair a cavity in the central part of the chewing surface of the tooth.
An impression is taken so that a precise restoration can be made that fits the part of the damaged tooth. A temporary filling is put in place that then protects the cavity from any further decay or damage to prevent any sensitivity.
The treatment usually takes two appointments, with impressions taken at the first appointment for the restoration and preparation. This is followed by the bonding of the inlay or onlay to the prepared tooth at the final appointment.Back to Treatments