Rare diseases · Sign or symptom
Dental crowding
Crowded teeth
HP:0000678
What it means
Changes in alignment of teeth in the dental arch
Overlapping teeth within an alveolar ridge.
Rare diseases that can present with this58
Very common80–99%
5Common30–79%
25- 2q23.1microduplication syndrome
- 2q32q33deletion syndrome
- Apert syndrome
- Auriculocondylar syndrome
- Bardet-Biedl syndrome
- Cardiac anomalies-short stature-joint hypermobility-facial dysmorphism syndrome
- Cardiac-valvular Ehlers-Danlos syndrome
- Congenital fiber-type disproportion myopathy
- Developmental and speech delay due to SOX5 deficiency
- Emanuel syndrome
- FG syndrome type 1
- Fraser syndrome
- Hereditary sensory and autonomic neuropathy due to TECPR2 mutation
- Hypermobile Ehlers-Danlos syndrome
- Lateral meningocele syndrome
- Macrocephaly-intellectual disability-left ventricular non compaction syndrome
- Mandibuloacral dysplasia
- Marfan syndrome
- Micrognathia-recurrent infections-behavioral abnormalities-mild intellectual disability syndrome
- Prader-Willi syndrome
- Rabson-Mendenhall syndrome
- Silver-Russell syndrome
- Silver-Russell syndrome due to an imprinting defect of 11p15
- Trisomy 9p syndrome
- X-linked microcephaly-growth retardation-prognathism-cryptorchidism syndrome
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: Dental overcrowding · Inadequate arch length for tooth size · Overcrowding of teeth · Tooth mass arch size discrepancy · Tooth size discrepancy
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Start free with EleplanThis 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.