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Classification and external resources
ICD-10 K07.0
ICD-9 524.04
DiseasesDB 22641
MedlinePlus 003306
MeSH D008844

Micrognathism (also Micrognathia or snoffiness) is a condition where the jaw is undersized. It is also sometimes called "Mandibular hypoplasia".[citation needed] It is common in infants,[citation needed] but is usually self-corrected during growth, due to the jaws' increasing in size. It may be a cause of abnormal tooth alignment and in severe cases can hamper feeding (Hong). It can also, both in adults and children, make intubation difficult, either during anesthesia or in emergency situations.


While not always pathological, it can present as a birth defect in multiple syndromes including:


It can be detected by the naked eye as well as dental or skull X-Ray testing.[citation needed]

See also[edit]


  • Hong, P; Brake, MK; Cavanagh, JP; Bezuhly, M; Magit, AE (2012). "Feeding and mandibular distraction osteogenesis in children with Pierre Robin sequence: A case series of functional outcomes". Int J Pediatr Otorhinolaryngol 76: 414–418. 
  • "Micrognathia". Medline Plus. 12 May 2009. Retrieved 21 May 2011.