These are fillings that are used to repair moderately damaged back teeth. They are extremely strong fillings to withstand the grinding pressures of these teeth. They can be made of porcelain, ceramic or composite material.
Inlays are contained within the cusp tips of the tooth whereas onlays has a more extensive repair that covers the tooth cusps.
An onlay is much stronger than any other type of filling and actually increases the strength of the tooth.
The fitting of inlays and onlays usually requires two dental visits.
The first visit involves removing the old filling or the decayed area and preparing the surface for the new filling. An impression is made of the area and sent to the dental laboratory so the inlay or onlay can be constructed. A temporary cover or filling is applied until the next visit.
At the second visit, the temporary cover or filling is removed and the new inlay or onlay is fitted. The dentist will ensure that it is a perfect fit and does not interfere with your bite. It is then bonded into place with a powerful glue and polished.
Ask for an estimate of all fees for the complete treatment. Cost varies according to the extent of treatment. Extra costs may apply if complications occur. It is best to discuss costs before and during treatment, rather than afterwards.