'''Prognathism''', also called '''Habsburg jaw''' or '''Habsburgs' jaw'''<ref>{{cite journal | url=https://onlinelibrary.wiley.com/doi/10.1002/ajmg.a.36639 | doi=10.1002/ajmg.a.36639 | title=The Habsburg Jaw-Re-examined | year=2014 | last1=Peacock | first1=Zachary S. | last2=Klein | first2=Katherine P. | last3=Mulliken | first3=John B. | last4=Kaban | first4=Leonard B. | journal=American Journal of Medical Genetics Part A | volume=164 | issue=9 | pages=2263–2269 | pmid=24942320 | s2cid=35651759 }}</ref><ref>{{cite journal | url=https://pubmed.ncbi.nlm.nih.gov/32083497/ | pmid=32083497 | year=2020 | last1=Zamudio Martínez | first1=G. | last2=Zamudio Martínez | first2=A. | title=A Royal Family Heritage: The Habsburg Jaw | journal=Facial Plastic Surgery & Aesthetic Medicine | volume=22 | issue=2 | pages=120–121 | doi=10.1089/fpsam.2019.29017.mar | s2cid=211232475 }}</ref> primarily in the context of its prevalence amongst members of the [[House of Habsburg]],<ref>{{cite journal | url=https://pubmed.ncbi.nlm.nih.gov/24942320/ | pmid=24942320 | year=2014 | last1=Peacock | first1=Z. S. | last2=Klein | first2=K. P. | last3=Mulliken | first3=J. B. | last4=Kaban | first4=L. B. | title=The Habsburg Jaw-re-examined | journal=American Journal of Medical Genetics. Part A | volume=164A | issue=9 | pages=2263–2269 | doi=10.1002/ajmg.a.36639 | s2cid=35651759 }}</ref>, is a positional relationship of the [[Human mandible|mandible]] or [[maxilla]] to the skeletal base where either of the jaws protrudes beyond a predetermined imaginary line in the [[coronal plane]] of the skull. In [[Dentistry|general dentistry]], [[oral and maxillofacial surgery]], and orthodontics, this is assessed clinically or radiographically ([[Cephalometry|cephalometrics]]). The word ''prognathism'' derives from Greek πρό (''pro'', meaning 'forward') and γνάθος (''gnáthos'', 'jaw'). One or more types of prognathism can result in the common condition of [[malocclusion]], in which an individual's top [[tooth|teeth]] and lower teeth do not align properly.{{citation needed|date=September 2018}}