Regarding the placement of a large Class IV composite restoration, which statement is true?

Choosing the statement that using a mylar strip provides the most ideal surface smoothness reflects a fundamental aspect of achieving optimal results in composite restorations. Mylar strips are used during the placement process of composite materials, particularly for anterior teeth, to create a smooth and polished surface on the gingival margin of the restoration. The smoothness achieved by using these strips is due to their ability to maintain the shape and contour of the composite while providing a smooth surface that will bond well and appear aesthetically pleasing once polished.

Employing a mylar strip helps in eliminating any roughness that may occur when the composite is placed without one, thereby enhancing the overall finish of the restoration. This is particularly important in Class IV restorations, which replace both the incisal edge and proximal surfaces of anterior teeth that are highly visible and require a good aesthetic outcome.

The other statements lack the same degree of accuracy or efficacy in dental practice. For instance, curing the restoration only from the lingual may not provide adequate light penetration for curing, which can lead to incomplete polymerization of the composite. The proximity of the curing wand should be sufficient for effective curing without needing to touch the restoration directly, as touching could lead to damage or disrupt the surface. Lastly, re-