From Wikipedia, the free encyclopedia
Other namesMicrognathia, strawberry chin, hypognathia[1] hypognathism
Mia - whs.jpg
Girl with Wolf–Hirschhorn syndrome
SpecialtyMedical genetics

Micrognathism 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.[2] It can also, both in adults and children, make intubation difficult, either during anesthesia or in emergency situations.


Severe micrognathia in a 23-year-old
Micrognathia in Pitt-Rogers-Danks Syndrome (PRDS)

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]


Micrognathia can be treated by surgery, orthodontic braces,[4] and modified eating methods. Early detection of the problem and monitoring as the problems grows can help understand it better and find the most effective treatment procedure.

See also[edit]


  1. ^ Martínez-Frías, ML; Martín, M; Pardo, M; Torres, M; Cohen MM, Jr (1993). "Holoprosencephaly and hypognathia with two proboscides: report of a case and review of unusual proboscides". Journal of Craniofacial Genetics and Developmental Biology. 14 (4): 231–4. PMID 7883869.
  2. ^ Hong, Paul; Brake, Maria K.; Cavanagh, Jonathan P.; Bezuhly, Michael; Magit, Anthony E. (2012). "Feeding and mandibular distraction osteogenesis in children with Pierre Robin sequence: A case series of functional outcomes". International Journal of Pediatric Otorhinolaryngology. 76 (3): 414–418. doi:10.1016/j.ijporl.2011.12.023. ISSN 0165-5876. PMID 22245167.
  3. ^ Rajendran A; Sundaram S (10 February 2014). Shafer's Textbook of Oral Pathology (7th ed.). Elsevier Health Sciences APAC. pp. 12–13. ISBN 978-81-312-3800-4.
  4. ^ "What Is Micrognathia?". Healthline. Retrieved March 13, 2022.

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