The superficial and marginal behavior of composite filling materials is better than that of conventional types of front tooth filling cements as regards plaque retention, danger of marginal caries, and microleakage with potential damage to the pulp caused by bacterial toxins.--According to the results obtained in vitro, Evicrol is a positive alternative to Frontasil and Achatit-biochromatic. Plastic foils are not suitable as matrices, whereas aluminum matrices have been found to meet the requirements of surface smoothness and anatomical adaptability in cavity classes III, IV, and V. Celluloid matrices show inadequate adaptational properties, although they offer smoothest surfaces. The marginal behavior of Evicrol in class II cavities in molars is virtually the same in the case of both conventional retentive preparation and modified preparation of initial occlusal-approximal defects by the enamel etching technique. Discontinuous microretentive securing of matrix tags in the enamel etch pattern corresponds neither occlusally nor approximally to the physical definition of adhesion in different areas of the enamel. Clinical comparison in a 12-month study with the results obtained in vitro restricts safe indication to classes III and V, it being necessary to give careful consideration to the directions for use.--Long-term clinical longitudinal studies are required to determine permanent successes of treatment and possible extensions of the range of indications.