Dental inlays and onlays are conservative restorations for teeth with mild to moderate decay, damage, or for replacing old fillings, where too much tooth structure is missing for a filling but not enough for a crown. Inlays fit within the cusps of a tooth, while onlays extend over one or more cusps, providing more extensive coverage. Both are made from durable materials like porcelain or composite resin, closely matching the natural tooth color and offering a strong, long-lasting solution to tooth decay or damage.