Rare diseases · Sign or symptom

Oligodontia of primary teeth

HP:0012225

What it means

Reduced number of primary teeth.

Primary teeth are also called temporary teeth or deciduous teeth.

Rare diseases that can present with this1

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Decreased number of baby teeth · Decreased number of deciduous teeth · Decreased number of milk teeth · Decreased number of primary teeth · Failure of development of some deciduous teeth · Failure of development of some primary teeth · Fewer baby teeth than normal · Fewer deciduous teeth than normal

Oligodontia of primary teeth

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This page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.