{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T10:58:45Z","timestamp":1780484325067,"version":"3.54.1"},"reference-count":35,"publisher":"The Angle Orthodontist (EH Angle Education & Research Foundation)","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2010,3]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n        <jats:sec>\n          <jats:title>Objectives:<\/jats:title>\n          <jats:p>To examine (1) the laterality of asymmetry in movements of the right and left corners of the mouth in space during voluntary smile and (2) the laterality of asymmetry in relation to the difference between the right and left hemiface size and the handedness.<\/jats:p>\n        <\/jats:sec>\n        <jats:sec>\n          <jats:title>Materials and Methods:<\/jats:title>\n          <jats:p>Participants were 155 volunteer Japanese female adults. They were categorized into the symmetric group (n \u200a=\u200a 120) and the right-side hemiface dominant group (n \u200a=\u200a 26) according to the hemiface size. In addition, the symmetric group was categorized into the right-handed group (n \u200a=\u200a 98) and the left-handed group (n \u200a=\u200a 22) according to the Edinburgh Handedness Inventory. Position vectors of the right and left corners of the mouth were obtained from the three-dimensional facial images for the rest, the maximal lip corner retraction, and the portrait smile. The displacements of the right and left corners of the mouth for each expression and the proportions of the subjects with the right- and left-sided laterality were compared.<\/jats:p>\n        <\/jats:sec>\n        <jats:sec>\n          <jats:title>Results:<\/jats:title>\n          <jats:p>The left corner of the mouth showed significantly greater displacement (<jats:italic>P<\/jats:italic> &lt; .01) than the right in the symmetric group for the portrait smile. The left-sided laterality was found regardless of the handedness.<\/jats:p>\n        <\/jats:sec>\n        <jats:sec>\n          <jats:title>Conclusions:<\/jats:title>\n          <jats:p>Displacements of the right and left corners of the mouth during voluntary smile were asymmetric, and the left-sided laterality was found. Also, the laterality of the facedness differed in relation to the hemiface size, but was not related to the handedness.<\/jats:p>\n        <\/jats:sec>","DOI":"10.2319\/021809-104.1","type":"journal-article","created":{"date-parts":[[2009,11,11]],"date-time":"2009-11-11T14:45:41Z","timestamp":1257950741000},"page":"223-229","source":"Crossref","is-referenced-by-count":21,"title":["Laterality of Asymmetry in Movements of the Corners of the Mouth during Voluntary Smile"],"prefix":"10.2319","volume":"80","author":[{"given":"Haruna","family":"Okamoto","sequence":"first","affiliation":[{"name":"Postdoctoral, Department of Orthodontics and Dentofacial Orthopedics, Graduate School of Dentistry, Osaka University, Suita, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Seiji","family":"Haraguchi","sequence":"additional","affiliation":[{"name":"Assistant Professor, Department of Orthodontics and Dentofacial Orthopedics, Osaka University, Suita, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kenji","family":"Takada","sequence":"additional","affiliation":[{"name":"Professor and Chair, Department of Orthodontics and Dentofacial Orthopedics, Graduate School of Dentistry; Adjunct Professor, Center for Advanced Medical Engineering and Informatics, Osaka University, Suita, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1164","reference":[{"key":"i0003-3219-80-2-223-b01","series-title":"Ann N Y Acad Sci","first-page":"745","article-title":"Comparative neurology of vocalization and speech: proof of a dichotomy.","volume":"280","author":"Myers, R. E.","year":"1976","unstructured":"Myers, R. E.\n          \n          Comparative neurology of vocalization and speech: proof of a dichotomy.\n          Ann N Y Acad Sci\n          1976. 280:745\u2013760."},{"key":"i0003-3219-80-2-223-b02","series-title":"Clin Orthod Res","first-page":"2","article-title":"A morphometric analysis of the posed smile.","volume":"1","author":"Ackerman, J. L.","year":"1998","unstructured":"Ackerman, J. L., M. B.Ackerman, C. M.Brensinger, and J. L.Landis. A morphometric analysis of the posed smile.Clin Orthod Res1998. 1:2\u201311."},{"key":"i0003-3219-80-2-223-b03","series-title":"Plast Reconstr Surg","first-page":"1273","article-title":"Three-dimensional nasolabial displacement during movement in repaired cleft lip and palate patients.","volume":"105","author":"Trotman, C. A.","year":"2000","unstructured":"Trotman, C. A., J. J.Faraway, and G. K.Essick. Three-dimensional nasolabial displacement during movement in repaired cleft lip and palate patients.Plast Reconstr Surg2000. 105:1273\u20131283."},{"key":"i0003-3219-80-2-223-b04","series-title":"Cleft Palate Craniofac J","first-page":"291","article-title":"Are facial expressions reproducible?","volume":"3","author":"Johnston, D. J.","year":"2003","unstructured":"Johnston, D. J., D. T.Millett, A. F.Ayoub, and M.Bock. Are facial expressions reproducible?Cleft Palate Craniofac J2003. 3:291\u2013296."},{"key":"i0003-3219-80-2-223-b05","series-title":"Cleft Palate Craniofac J","first-page":"245","article-title":"Visual and statistical modeling of facial movement in patients with cleft lip and palate.","volume":"42","author":"Trotman, C. A.","year":"2005","unstructured":"Trotman, C. A., J. J.Faraway, and C.Phillips. Visual and statistical modeling of facial movement in patients with cleft lip and palate.Cleft Palate Craniofac J2005. 42:245\u2013254."},{"key":"i0003-3219-80-2-223-b06","series-title":"Contemporary Treatment of Dentofacial Deformity","first-page":"92","author":"Proffit, W. R.","year":"2003","unstructured":"Proffit, W. R., R. P.WhiteJr, and D. M.Sarver. Contemporary Treatment of Dentofacial Deformity. St Louis, MoMosby. 2003. 92\u2013126. 2. Ackerman JL, Ackerman MB, Brensinger CM, Landis JL. A morphometric analysis of the posed smile. Clin Orthod Res. 1998; 1:2\u201311."},{"key":"i0003-3219-80-2-223-b07","series-title":"Otol Neurotol","first-page":"999","article-title":"Three-dimensional quantification of the symmetry of normal facial movement.","volume":"23","author":"Coulson, S. E.","year":"2002","unstructured":"Coulson, S. E., G. R.Croxson, and W. L.Gilleard. Three-dimensional quantification of the symmetry of normal facial movement.Otol Neurotol2002. 23:999\u20131002."},{"key":"i0003-3219-80-2-223-b08","series-title":"Br J Plast Surg","first-page":"644","article-title":"Three-dimensional video-analysis of facial movements in healthy volunteers.","volume":"56","author":"Giovanoli, P.","year":"2003","unstructured":"Giovanoli, P., C. H.Tzou, M.Ploner, and M.Frey. Three-dimensional video-analysis of facial movements in healthy volunteers.Br J Plast Surg2003. 56:644\u2013652."},{"key":"i0003-3219-80-2-223-b09","series-title":"Cortex","first-page":"381","article-title":"Asymmetry of facial expression related to handedness, footedness, and eyedness: a quantitative study.","volume":"18","author":"Borod, J. C.","year":"1981","unstructured":"Borod, J. C., H. S.Caron, and E.Koff. Asymmetry of facial expression related to handedness, footedness, and eyedness: a quantitative study.Cortex1981. 18:381\u2013390."},{"key":"i0003-3219-80-2-223-b10","series-title":"Acta Anat (Basel)","first-page":"154","article-title":"Functional asymmetry in the face.","volume":"91","author":"Chaurasia, B. D.","year":"1975","unstructured":"Chaurasia, B. D. and H. K.Goswami. Functional asymmetry in the face.Acta Anat (Basel)1975. 91:154\u2013160."},{"key":"i0003-3219-80-2-223-b11","series-title":"Cortex","first-page":"327","article-title":"Asymmetries in interpreting and expressing a posed facial expression.","volume":"14","author":"Campbell, R.","year":"1978","unstructured":"Campbell, R.\n          \n          Asymmetries in interpreting and expressing a posed facial expression.\n          Cortex\n          1978. 14:327\u2013342."},{"key":"i0003-3219-80-2-223-b12","series-title":"Science","first-page":"434","article-title":"Emotions are expressed more intensely on the left side of the face.","volume":"202","author":"Sackeim, H. A.","year":"1978a","unstructured":"Sackeim, H. A., R. C.Gur, and M. C.Saucy. Emotions are expressed more intensely on the left side of the face.Science1978a. 202:434\u2013436."},{"key":"i0003-3219-80-2-223-b13","series-title":"Neuropsychol Rev","first-page":"41","article-title":"Neuropsychological aspects of facial asymmetry during emotional expression: a review of the normal adult literature.","volume":"7","author":"Borod, J. C.","year":"1997","unstructured":"Borod, J. C., C. S.Haywood, and E.Koff. Neuropsychological aspects of facial asymmetry during emotional expression: a review of the normal adult literature.Neuropsychol Rev1997. 7:41\u201360."},{"key":"i0003-3219-80-2-223-b14","series-title":"Cortex","first-page":"289","article-title":"Lateralized asymmetries in self-perception.","volume":"16","author":"Strauss, E.","year":"1980","unstructured":"Strauss, E. and E.Kaplan. Lateralized asymmetries in self-perception.Cortex1980. 16:289\u2013293."},{"key":"i0003-3219-80-2-223-b15","series-title":"Science","first-page":"834","article-title":"Asymmetry in facial expression.","volume":"209","author":"Nelson, C. A.","year":"1980","unstructured":"Nelson, C. A. and F. D.Horowitz. Asymmetry in facial expression.Science1980. 209:834."},{"key":"i0003-3219-80-2-223-b16","series-title":"Science","first-page":"834","article-title":"Asymmetry in facial expression.","volume":"209","author":"Sackeim, H. A.","year":"1980","unstructured":"Sackeim, H. A. and R. C.Gur. Asymmetry in facial expression.Science1980. 209:834\u2013836."},{"key":"i0003-3219-80-2-223-b17","series-title":"Eur J Orthod","first-page":"314","article-title":"Preliminary evaluation of an illustrated scale for rating dental attractiveness.","volume":"9","author":"Evans, R.","year":"1987","unstructured":"Evans, R. and W.Shaw. Preliminary evaluation of an illustrated scale for rating dental attractiveness.Eur J Orthod1987. 9:314\u2013318."},{"key":"i0003-3219-80-2-223-b18","series-title":"J Osaka Univ Dent Soc","first-page":"239","article-title":"A study on the individual growth of maxillofacial skeleton by means of lateral cephalometric roentgenograms.","volume":"22","author":"Wada, K.","year":"1977","unstructured":"Wada, K.\n          \n          A study on the individual growth of maxillofacial skeleton by means of lateral cephalometric roentgenograms.\n          J Osaka Univ Dent Soc\n          1977. 22:239\u2013269."},{"key":"i0003-3219-80-2-223-b19","series-title":"Am J Orthod Dentofacial Orthop","first-page":"84","article-title":"Soft tissue cephalometric norms in Japanese adults.","volume":"118","author":"Alcalde, R. E.","year":"2000","unstructured":"Alcalde, R. E., T.Jinno, M. G.Orsini, A.Sasaki, R. M.Sugiyama, and T.Matsumura. Soft tissue cephalometric norms in Japanese adults.Am J Orthod Dentofacial Orthop2000. 118:84\u201389."},{"key":"i0003-3219-80-2-223-b20","series-title":"J Osaka Univ Dent Sch","first-page":"139","article-title":"Tongue posture at rest: an electromyographic and cephalometric appraisal.","volume":"25","author":"Takada, K.","year":"1985","unstructured":"Takada, K., A. A.Lowe, K.Yoshida, and M.Sakuda. Tongue posture at rest: an electromyographic and cephalometric appraisal.J Osaka Univ Dent Sch1985. 25:139\u2013151."},{"key":"i0003-3219-80-2-223-b21","series-title":"Neuropsychologia","first-page":"1028","article-title":"Digitizing the moving face during dynamic displays of emotion.","volume":"38","author":"Richardson, C. K.","year":"2000","unstructured":"Richardson, C. K., D.Bowers, R. M.Bauer, K. M.Heilman, and C. M.Leonard. Digitizing the moving face during dynamic displays of emotion.Neuropsychologia2000. 38:1028\u20131039."},{"key":"i0003-3219-80-2-223-b22","series-title":"Angle Orthod","first-page":"28","article-title":"Facial asymmetry in subjects with skeletal Class III deformity.","volume":"72","author":"Haraguchi, S.","year":"2002","unstructured":"Haraguchi, S., K.Takada, and Y.Yasuda. Facial asymmetry in subjects with skeletal Class III deformity.Angle Orthod2002. 72:28\u201335."},{"key":"i0003-3219-80-2-223-b23","series-title":"Int J Adult Orthodon Orthognath Surg","first-page":"171","article-title":"The prevalence of facial asymmetry in the dentofacial deformities population at the University of North Carolina.","volume":"12","author":"Severt, T. R.","year":"1997","unstructured":"Severt, T. R. and W. R.Proffit. The prevalence of facial asymmetry in the dentofacial deformities population at the University of North Carolina.Int J Adult Orthodon Orthognath Surg1997. 12:171\u2013176."},{"key":"i0003-3219-80-2-223-b24","series-title":"Neuropsychologia","first-page":"97","article-title":"The assessment and analysis of handedness: the Edinburgh inventory.","volume":"9","author":"Oldfield, R. C.","year":"1971","unstructured":"Oldfield, R. C.\n          \n          The assessment and analysis of handedness: the Edinburgh inventory.\n          Neuropsychologia\n          1971. 9:97\u2013113."},{"key":"i0003-3219-80-2-223-b25","series-title":"R: A Language and Environment for Statistical Computing","year":"2006","unstructured":"R Development Core Team\n          \n          R: A Language and Environment for Statistical Computing. ViennaR Foundation for Statistical Computing. 2006."},{"key":"i0003-3219-80-2-223-b26","series-title":"Angle Orthod","first-page":"132","article-title":"Three dimensional analysis of facial movement in normal adults: influence of sex and facial shape.","volume":"71","author":"Weeden, J. C.","year":"2001","unstructured":"Weeden, J. C., C. A.Trotman, and J. J.Faraway. Three dimensional analysis of facial movement in normal adults: influence of sex and facial shape.Angle Orthod2001. 71:132\u2013140."},{"key":"i0003-3219-80-2-223-b27","series-title":"Cortex","first-page":"153","article-title":"Development of hemiface size asymmetry.","volume":"21","author":"Koff, E.","year":"1985","unstructured":"Koff, E., J.Borod, and E.Strauss. Development of hemiface size asymmetry.Cortex1985. 21:153\u2013156."},{"key":"i0003-3219-80-2-223-b28","series-title":"Angle Orthod","first-page":"421","article-title":"Asymmetry of the face in orthodontic patients.","volume":"78","author":"Haraguchi, S.","year":"2008","unstructured":"Haraguchi, S., Y.Iguchi, and K.Takada. Asymmetry of the face in orthodontic patients.Angle Orthod2008. 78:421\u2013426."},{"key":"i0003-3219-80-2-223-b29","series-title":"NeuroImage","first-page":"758","article-title":"Neural substrates of human facial expression of pleasant emotion induced by comic films: a PET study.","volume":"17","author":"Iwase, M.","year":"2002","unstructured":"Iwase, M., Y.Ouchi, H.Okada, et al. Neural substrates of human facial expression of pleasant emotion induced by comic films: a PET study.NeuroImage2002. 17:758\u2013768."},{"key":"i0003-3219-80-2-223-b30","series-title":"Neuropsychologia","first-page":"237","article-title":"Facedness and emotion related to lateral dominance, sex and expression type.","volume":"18","author":"Borod, J. C.","year":"1980","unstructured":"Borod, J. C. and H. S.Caron. Facedness and emotion related to lateral dominance, sex and expression type.Neuropsychologia1980. 18:237\u2013241."},{"key":"i0003-3219-80-2-223-b31","series-title":"Brain","first-page":"1866","article-title":"The course of corticofacial projections in the human brainstem.","volume":"124","author":"Urban, P. P.","year":"2001","unstructured":"Urban, P. P., S.Wicht, G.Vucorevic, et al. The course of corticofacial projections in the human brainstem.Brain2001. 124:1866\u20131876."},{"key":"i0003-3219-80-2-223-b32","series-title":"Cereb Cortex","first-page":"2932","article-title":"Hemispheric asymmetry of frequency-dependent finger movement: a functional magnetic resonance imaging study.","volume":"18","author":"Hayashi, M. J.","year":"2008","unstructured":"Hayashi, M. J., D. N.Saito, Y.Aramaki, T.Asai, Y.Fujibayashi, and M.Sadato. Hemispheric asymmetry of frequency-dependent finger movement: a functional magnetic resonance imaging study.Cereb Cortex2008. 18:2932\u20132940."},{"key":"i0003-3219-80-2-223-b33","series-title":"J Neurophysiol","first-page":"821","article-title":"Role of individual basal ganglia nuclei in force amplitude generation.","volume":"98","author":"Spraker, M. B.","year":"2007","unstructured":"Spraker, M. B., H.Yu, D. M.Corcos, and D. E.Vaillancourt. Role of individual basal ganglia nuclei in force amplitude generation.J Neurophysiol2007. 98:821\u2013834."},{"key":"i0003-3219-80-2-223-b34","series-title":"Brain Cogn","first-page":"268","article-title":"Handedness and footedness in Korean college students.","volume":"43","author":"Kang, Y.","year":"2000","unstructured":"Kang, Y. and L. J.Harris. Handedness and footedness in Korean college students.Brain Cogn2000. 43:268\u2013274."},{"key":"i0003-3219-80-2-223-b35","series-title":"Trends Neurosci","first-page":"266","article-title":"Functional architecture of basal ganglia circuits: neural substrates of parallel processing.","volume":"13","author":"Alexander, G. E.","year":"1990","unstructured":"Alexander, G. E. and M. D.Crutcher. Functional architecture of basal ganglia circuits: neural substrates of parallel processing.Trends Neurosci1990. 13:266\u2013271."}],"container-title":["The Angle Orthodontist"],"original-title":[],"link":[{"URL":"https:\/\/angle-orthodontist.kglmeridian.com\/view\/journals\/angl\/80\/2\/article-p223.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/angle-orthodontist.kglmeridian.com\/downloadpdf\/journals\/angl\/80\/2\/article-p223.xml","content-type":"text\/html","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/angle-orthodontist.kglmeridian.com\/downloadpdf\/journals\/angl\/80\/2\/article-p223.xml","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,5,16]],"date-time":"2025-05-16T00:49:46Z","timestamp":1747356586000},"score":1,"resource":{"primary":{"URL":"https:\/\/angle-orthodontist.kglmeridian.com\/view\/journals\/angl\/80\/2\/article-p223.xml"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2010,3]]},"references-count":35,"journal-issue":{"issue":"2"},"URL":"https:\/\/doi.org\/10.2319\/021809-104.1","relation":{},"ISSN":["0003-3219","1945-7103"],"issn-type":[{"value":"0003-3219","type":"print"},{"value":"1945-7103","type":"electronic"}],"subject":[],"published":{"date-parts":[[2010,3]]}}}