It is a treatment applied in partial tooth deficiencies or when the intact tooth tissue is not sufficient for filling treatment. It is a disadvantage for those with metal allergy. It creates aesthetic problems over time in those whose gums tend to recede. Nowadays, it is recommended in cases of economic inadequacy, in cases where tooth lengths are too short and in cases where tooth loss is too long.

The opaque applied on the metal to cover the color of the metal during the production phase reduces the light transmittance of the porcelain and creates a stained appearance under white light.