tricho-dento-osseous syndrome (Monarch Disease Ontology id MONDO_0008592) can be described as follows. Tricho-dento-osseous dysplasia (TDO) belongs to the ectodermal dysplasias and is characterized by curly/kinky hair at birth, enamel hypoplasia with discolouration and molar taurodontism, increased overall bone mineral density (BMD) and increased thickness of the cortical bones of the skull. Also known as: TDO, TDO syndrome, TRICHODENTOOSSEOUS syndrome, Tricho Dento Osseous Syndrome, trichodontoosseous syndrome.