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Macrognathia refers to the condition of abnormally large jaws. It is also called as 'megagnathia'.

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Clinical appearance

  • Mandibular protrusion (when mandible is affected)
  • "Gummy smile" (when maxilla is affected)
  • Ramus of mandible forms a less steep angle with body of mandible
  • Mandibular prognathism caused by excessive condylar growth
  • Chin appears prominent


Treatment is surgical. Osteotomies may be done in case of maxillary macrognathia. Mandibular macrognathia is generally managed by resection of a portion of the mandible followed by orthodontic treatment.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Macrognathia". A list of authors is available in Wikipedia.
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