Extended crossing fibers of the mentalis muscle attaching to the contralateral mandible

Joe Iwanaga, Mi Sun Hur, Shogo Kikuta, Soichiro Ibaragi, R. Shane Tubbs

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Fibers of the facial muscles occasionally extend, cross the midline, and connect to surrounding structures on the contralateral side, perhaps enabling the mouth to make more delicate movements and generate more facial expressions. This case report describes a variant in which the extended fibers of the mentalis crossed the midline and indicates the relationship of these fibers to the surrounding structures. Some of the deepest fibers of the mentalis descended inferomedially and crossed transversely just below the chin prominence to attach to the periosteum of the mandible on the contralateral side. The variation presented in this study shed light on the interactions of the mentalis with the surrounding muscles.

Original languageEnglish
Pages (from-to)522-524
Number of pages3
JournalAnatomy and Cell Biology
Issue number4
Publication statusPublished - 2021


  • Anatomy
  • Facial muscles
  • Mentalis

ASJC Scopus subject areas

  • Anatomy
  • Histology
  • Developmental Biology
  • Cellular and Molecular Neuroscience
  • Cell Biology


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