Amelogenesis imperfecta is a hereditary condition resulting in poor tooth development, severe anomalies, or complete absence of enamel. Enamel lesions may be the only characteristic of this condition or may be part of a generalized syndrome. Amelogenesis imperfecta can be characterized by enamel hypoplasia and/or hypomaturation or hypocalcification of the existing teeth. Restoration for patients with this condition should be oriented toward the functional and esthetic rehabilitation and the protection of the existing teeth. This paper presents a description of a patient's oral rehabilitation with all-ceramic veneers and crowns after extensive crown lengthening. The diagnostic procedure is also reported in detail. A microscopic examination was also performed on an extracted third molar under polarized light. Keywords: all-ceramic restorations, amelogenesis imperfecta