“…In some syndromes, failure of tooth eruption is associated to other oral abnormalities, as for instance hypoplastic amelogenesis imperfecta, relative microdontia, intra-pulpal calcification, and/or extra oral manifestations such as nephrocalcinosis in enamel renal syndrome ( FAM20A gene), ophthalmic abnormalities in GAPO syndrome ( ANTXR1 ), oculodental syndrome ( FGFR3 ), Nance-Horan syndrome ( NHS ) 2 , 10 or skeletal abnormalities in osteoglophonic dysplasia ( FGFR1 ). 11 These syndromic forms are genetically distinct.…”