Which dental condition could present with teeth that have a porcelain-like appearance?

The condition characterized by teeth that have a porcelain-like appearance is amelogenesis imperfecta. This genetic disorder affects the formation of enamel, leading to a variety of enamel abnormalities. In individuals with amelogenesis imperfecta, the enamel is either absent or poorly formed, which can give the teeth a shiny, smooth surface reminiscent of porcelain. The aesthetics of teeth in this condition are markedly altered, often presenting as discolored, brittle, and prone to wear and sensitivity.

Dentinogenesis imperfecta, while related to the development of dentin and might also exhibit some enamel issues, primarily impacts the dentin layer. This condition would not typically result in teeth that have a porcelain-like look, as it is more associated with a translucent or opalescent appearance due to the dentin's color.

Enamel hypoplasia involves incomplete or defective formation of enamel leading to pits, grooves, or a thin enamel surface. This condition does not typically result in a porcelain-like finish but rather presents with uneven or rough surfaces.

Root canal failure refers to complications arising after a root canal treatment, such as infection or reinfection, which does not involve the intrinsic properties of enamel or its appearance.

Therefore, the characteristic porcelain-like appearance of the teeth is most closely associated with amelogenesis