RGD uses the Human Disease Ontology (DO, https://disease-ontology.org/) for disease curation across species. RGD automatically downloads each new release of the ontology on a monthly basis. Some additional terms which are required for RGD's curation purposes but are not currently covered in the official version of DO have been added. As corresponding terms are added to DO, these custom terms are retired and the DO terms substituted in existing annotations and subsequently used for curation.
The active destruction of the deciduous teeth of children by a process that seems to differ from caries. One of its distinguishing features is that the permanent teeth are not affected. B. G. Bibby, Food and the Teeth (1990) 270:61.