title: Relation of mental nerve with mandibular branch of the facial nerve.
abstract: The aim of this study is to elucidate the detailed anatomical relation of mental nerve with marginal mandibular branch of the facial nerve. Twenty-three hemi-faces of adult Korean cadavers (11 Male and 7 female) were dissected. All locations of crossing (C) of marginal mandibular branch of the facial nerve and mental nerve were measured below the inferior verge of the lower vermillion (V): a vertical distance (V-Gn) between V and gnathion (Gn) and horizontal distance (V-OC) between V and oral commissure (OC). The mental foramen located at 19.8 +/- 4.4 mm below the inferior verge of the lower vermillion (V) and 34.3 +/- 5.2 mm laterally from the midline. In all specimens there were found interconnections between marginal mandibular branch of the facial nerve and mental nerve. The number of connecting site was 8.26 +/- 2.49. Microscopically, both of the nerve branches had a common epineurium, but the perineurium separated. V-Gn and the vertical distance between V and the connecting point (C) was in the ratio of approximately 2:1, and V-OC and the horizontal distance from V:C was an equal ratio. The proximity of the mental nerve and marginal mandibular branch of the facial nerve to each other draws an attention as operating the mental area.
authors.affiliation: Department of Plastic Surgery, and Center for Advanced Medical Education by BK21 project, Inha University College of Medicine, 7-206 Sinheung-dong, Jung-gu, Incheon, Korea. jokerhg@inha.ac.kr
authors.forename: Kun
authors.initials: K
authors.lastname: Hwang
authors.forename: Sheng
authors.initials: S
authors.lastname: Jin
authors.forename: Jun Ho
authors.initials: JH
authors.lastname: Park
authors.forename: Dae Joong
authors.initials: DJ
authors.lastname: Kim
authors.forename: In Hyuk
authors.initials: IH
authors.lastname: Chung
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002102:Cadaver; D002680:Chin / Q000294:innervation*; D005154:Facial Nerve / Q000033:anatomy & histology* / Q000648:ultrastructure; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged