[Esthetic adhesive filling in posterior teeth--an illusion?].

This study demonstrates once more the high caries incidence of the proximal surfaces of molar teeth. If the lesions are completely excavated so that the cervical margin is free of any caries, more than 33-57% of all cavities, depending on the type of tooth, are not suited for acid etch procedures, because there is less than 1 mm of sound enamel, or none at all. In these cases the adhesive filling technique is contraindicated.