Restoring a single, dark central incisor to match an adjacent natural central incisor is one of the most difficult challenges for a cosmetic dentist. Bleaching can lighten a dark tooth, but usually the results are subpar. A porcelain veneer can mask a dark tooth, but special techniques are needed to avoid the color showing through because of the transparent nature of a porcelain veneer. Some newer all-porcelain crowns can completely block out the dark color and look very natural. Often we need to restore both central incisors to get a perfect color match. Each case is unique.