has part has part characteristic of inheres in has modifier Abnormality of dental eruption Persistence of primary teeth Delayed loss of baby teeth HP:0006305 HP:0003772 Delayed loss of deciduous teeth HP:0006341 Delayed loss of primary teeth Persistence of the primary teeth beyond the age by which they normally are shed and replaced by the permanent teeth. Persistent deciduous dentition Persistence of deciduous teeth Retained deciduous teeth Failure to exfoliate primary teeth Failure to lose baby teeth Persistent primary teeth Retained primary teeth Failure to exfoliate deciduous teeth SNOMEDCT_US:57650002 HP:0006299 HP:0006354 Deciduous teeth retention Persistent primary dentition UMLS:C0266050 Retained baby teeth The primary teeth are usually shed and replaced by the permanent teeth, usually by the age of six years. Persistence of primary teeth may be related to agenesis of the permanent teeth. Molar primary teeth may be persistent because of the agenesis of the premolars. HP:0006335 Abnormality of primary teeth persistence abnormal primary dentition