_:vb50954924 . _:vb50954924 "url:http://www.rarediseases.org/search/rdbdetail_abstract.html?disname=Tooth%20and%20Nail%20Syndrome"^^ . _:vb50954924 . _:vb50954924 . _:vb50954924 "A syndrome that affects the teeth, nails, hair, and/or skin. It is characterized by absence (hypodontia) and/or malformation of certain primary (deciduous) and secondary (permanent) teeth occurring in association with improper development of the nails, particularly the toenails."^^ . _:vb50954924 . _:vb50954924 .