amelogenesis imperfecta

https://doi.org/10.1351/goldbook.10364
  1. Hereditary yellow, brown, or grey tooth enamel.
  2. Developmental disorder of the teeth in which they are covered with thin, abnormal enamel resulting from defective structure or processing of enamel proteins.
Source:
PAC, 2016, 88, 713. 'Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)' on page 720 (https://doi.org/10.1515/pac-2015-1202)