Non-carious cervical lesions are usually described as "tooth substance loss." Such process includes attrition, abrasion, erosion, abfraction, localized non-hereditary dentinal hypocalcification, localized non-hereditary dentinal hypoplasia, amelogenesis imperfecta, dentinogenesis imperfecta, and tooth trauma. Several materials have been proposed to restore NCCL: amalgam, glass-ionomer cements, compomers, and composite resins. Early failures of these restorations have often been reported in the literature, probably due to the same factors which originally caused the lesions. Further investigations are required to determine more reliable restorative therapies.