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Thistle tube shaped pulp

MedGen UID:
Concept ID:
Anatomical Abnormality
Synonym: Flame-shaped pulp
HPO: HP:0033790


A thistle tube shape of the pulp chamber, meaning an enlarged coronal pulp chamber with narrow pulp canals giving a radiographic appearance of the shape of a thistle tube or a flame. It may occur isolated or associated with other dental anomalies and rare diseases such as dentinogenesis imperfecta, which should be assessed and coded separately. The diagnosis thistle tube shape pulp requires clinical and radiographic examinations. [from HPO]

Term Hierarchy

CClinical test,  RResearch test,  OOMIM,  GGeneReviews,  VClinVar  
  • CROGVThistle tube shaped pulp

Conditions with this feature

MedGen UID:
Concept ID:
Disease or Syndrome
Dentin dysplasia type II (DTDP2) is a defect of dentin formation in which the clinical appearance of the secondary teeth is normal, but the primary teeth may appear opalescent, similar to teeth affected by dentinogenesis imperfecta. The roots of the teeth are of normal shape and morphologic character. The pulp chambers and root canals of the anterior teeth and the premolars are shaped like thistle tubes because of the radicular extension of the pulp chamber. Most teeth show accumulations of pulp stones in these unusually shaped pulp chambers (summary by Kalk et al., 1998). Also see dentin dysplasia type I (DTDP1; 125400).

Recent clinical studies


Perlea P, Dragomir C, Bodeanu A, Temelcea AN, Iliescu AA
Rom J Morphol Embryol 2018;59(1):359-365. PMID: 29940650

Clinical prediction guides

Lukinmaa PL, Ranta H, Ranta K, Kaitila I, Hietanen J
J Craniofac Genet Dev Biol 1987;7(2):127-35. PMID: 3624418

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