Open AccessRelationship between lip-closing force and three-dimensional lip morphology in adults with straight facial profile
Author(s) -
Aya Fujiwara,
Fumiyo Kuroyanagi,
Atsushi Kawabata,
Atsushi Fujiwara,
Wakato Tome,
Noriyuki Kitai
Publication year - 2015
Publication title -
the international journal of orofacial myology
Language(s) - English
Resource type - Journals
eISSN - 2694-2526
pISSN - 0735-0120
DOI - 10.52010/ijom.2015.41.1.3
Subject(s) - closing (real estate) , morphology (biology) , upper lip , lower lip , transverse plane , anatomy , soft tissue , orthodontics , medicine , geology , surgery , paleontology , political science , law
The purpose of the present study was to investigate the relationship between multidirectional lipclosing force and the three-dimensional morphology of perioral soft tissue in adults. Twenty-three Japanese adults with straight facial profiles participated in this study. The signals of directional lipclosing force (DLCF) were investigated in 8 directions. Three-dimensional morphology of perioral soft tissue was recorded using a 30 surface-imaging device. Correlations between lip-closing force and the three-dimensional morphology of the perioral soft tissue were analyzed statistically. Upper lip-closing force significantly correlated with the anteroposterior, vertical, transverse morphology of the upper lip, while lower lip-closing force did not correlate with the anteroposterior, vertical, or transverse morphology of the lower lip. In adults with straight facial profiles, associations were found between upper lip-closing force and upper lip morphology. There were no associations between lower lip-closing force and lower lip morphology.