With the visualization provided by the operating microscope (OM), it is now possible to place fillings in formerly inaccessible areas and work in a way that preserves the most enamel and/or dentin. The OM enables working with full overview in interdental areas or in hard-to-reach areas around crowns. The good view not only enables new forms of therapy, but reduces stress while working. The two clinical cases cited show clearly how the OM can be used advantageously in a range of situations--from the economical repair of a large old filling to minimal-invasive initial treatment. As an added bonus, the OP allows a completely relaxed and upright working posture.