Establishment of a new relationship between posed smile width and lower facial height: A cross-sectional study
Identifieur interne : 001173 ( Main/Exploration ); précédent : 001172; suivant : 001174Establishment of a new relationship between posed smile width and lower facial height: A cross-sectional study
Auteurs : Aby Abraham [Inde] ; Jinu George [Inde] ; Elbe Peter [Inde] ; Koshi Philip [Inde] ; Rajesh Chankramath [Inde] ; Dexton Antony Johns [Inde] ; Anitha Bhaskar [Inde]Source :
- European Journal of Dentistry [ 1305-7456 ] ; 2015.
Abstract
The present study is intended to add a new parameter that would be useful in orthodontic clinical evaluation, treatment planning, and determination of vertical dimension (at occlusion).
Standardized videographic recording of 79 subjects during posed smile was captured. Each video was then cut into 30 photos using the free studio software. The widest commissure-to-commissure posed smile frame (posed smile width [SW]) was selected as one of 10 or more frames showing an identical smile. Lower third of the face is measured from subnasale to soft tissue menton using a digital vernier caliper. Two values were then compared. Ratio between lower facial height and posed SW was calculated.
The co-relation between smiling width and lower facial height was found to be statistically significant (
In class I subjects with pleasing appearance, normal facial proportions, normal overjet and overbite, and average Frankfort mandibular angle, the lower facial height (subnasale to soft tissue menton) is equal to posed SW.
Url:
DOI: 10.4103/1305-7456.163232
PubMed: 26430369
PubMed Central: 4569992
Affiliations:
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first="Aby" last="Abraham">Aby Abraham</name><affiliation wicri:level="1"><nlm:aff id="aff1">Department of Orthodontics, Government Dental College, Kottayam, Kerala, India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Department of Orthodontics, Government Dental College, Kottayam, Kerala</wicri:regionArea><wicri:noRegion>Kerala</wicri:noRegion></affiliation></author><author><name sortKey="George, Jinu" sort="George, Jinu" uniqKey="George J" first="Jinu" last="George">Jinu George</name><affiliation wicri:level="1"><nlm:aff id="aff1">Department of Orthodontics, Government Dental College, Kottayam, Kerala, India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Department of Orthodontics, Government Dental College, Kottayam, Kerala</wicri:regionArea><wicri:noRegion>Kerala</wicri:noRegion></affiliation></author><author><name sortKey="Peter, Elbe" sort="Peter, Elbe" uniqKey="Peter E" first="Elbe" last="Peter">Elbe Peter</name><affiliation wicri:level="1"><nlm:aff id="aff1">Department of Orthodontics, Government Dental College, Kottayam, Kerala, India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Department of Orthodontics, Government Dental College, Kottayam, Kerala</wicri:regionArea><wicri:noRegion>Kerala</wicri:noRegion></affiliation></author><author><name sortKey="Philip, Koshi" sort="Philip, Koshi" uniqKey="Philip K" first="Koshi" last="Philip">Koshi Philip</name><affiliation wicri:level="1"><nlm:aff id="aff1">Department of Orthodontics, Government Dental College, Kottayam, Kerala, India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Department of Orthodontics, Government Dental College, Kottayam, Kerala</wicri:regionArea><wicri:noRegion>Kerala</wicri:noRegion></affiliation></author><author><name sortKey="Chankramath, Rajesh" sort="Chankramath, Rajesh" uniqKey="Chankramath R" first="Rajesh" last="Chankramath">Rajesh Chankramath</name><affiliation wicri:level="1"><nlm:aff id="aff2">Department of Prosthodontics, Government Dental College, Kottayam, Kerala, India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Department of Prosthodontics, Government Dental College, Kottayam, Kerala</wicri:regionArea><wicri:noRegion>Kerala</wicri:noRegion></affiliation></author><author><name sortKey="Johns, Dexton Antony" sort="Johns, Dexton Antony" uniqKey="Johns D" first="Dexton Antony" last="Johns">Dexton Antony Johns</name><affiliation wicri:level="1"><nlm:aff id="aff3">Department of Endodontics, KMCT Dental College, Kozhikode, Kerala, India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Department of Endodontics, KMCT Dental College, Kozhikode, Kerala</wicri:regionArea><wicri:noRegion>Kerala</wicri:noRegion></affiliation></author><author><name sortKey="Bhaskar, Anitha" sort="Bhaskar, Anitha" uniqKey="Bhaskar A" first="Anitha" last="Bhaskar">Anitha Bhaskar</name><affiliation wicri:level="1"><nlm:aff id="aff4">Department of Community Medicine, Government Medical College, Kottayam, Kerala, India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Department of Community Medicine, Government Medical College, Kottayam, Kerala</wicri:regionArea><wicri:noRegion>Kerala</wicri:noRegion></affiliation></author></analytic><series><title level="j">European Journal of Dentistry</title><idno type="ISSN">1305-7456</idno><idno type="eISSN">1305-7464</idno><imprint><date when="2015">2015</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec id="st1"><title>Objective:</title><p>The present study is intended to add a new parameter that would be useful in orthodontic clinical evaluation, treatment planning, and determination of vertical dimension (at occlusion).</p></sec><sec id="st2"><title>Materials and Methods:</title><p>Standardized videographic recording of 79 subjects during posed smile was captured. Each video was then cut into 30 photos using the free studio software. The widest commissure-to-commissure posed smile frame (posed smile width [SW]) was selected as one of 10 or more frames showing an identical smile. Lower third of the face is measured from subnasale to soft tissue menton using a digital vernier caliper. Two values were then compared. Ratio between lower facial height and posed SW was calculated.</p></sec><sec id="st3"><title>Results:</title><p>The co-relation between smiling width and lower facial height was found to be statistically significant (<italic>P</italic> < 0.01). The ratio of lower facial height and smiling width was calculated as 1.0016 with a standard deviation (SD) = 0.04 in males and 1.0301 with an SD = 0.07 in females. The difference between the mean lower facial height in males and females was statistically significant with a <italic>t</italic> = 10.231 and <italic>P</italic> = 0.000. The difference between the mean smiling width in males and females was also statistically significant with a <italic>t</italic> = 5.653 and <italic>P</italic> = 0.000.</p></sec><sec id="st4"><title>Conclusion:</title><p>In class I subjects with pleasing appearance, normal facial proportions, normal overjet and overbite, and average Frankfort mandibular angle, the lower facial height (subnasale to soft tissue menton) is equal to posed SW.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Walder, Jf" uniqKey="Walder J">JF Walder</name></author><author><name sortKey="Freeman, K" uniqKey="Freeman K">K Freeman</name></author><author><name sortKey="Lipp, Mj" uniqKey="Lipp M">MJ Lipp</name></author><author><name sortKey="Nicolay, Of" uniqKey="Nicolay O">OF Nicolay</name></author><author><name sortKey="Cisneros, Gj" uniqKey="Cisneros G">GJ Cisneros</name></author></analytic></biblStruct><biblStruct><analytic><author><name 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Johns</name><name sortKey="Peter, Elbe" sort="Peter, Elbe" uniqKey="Peter E" first="Elbe" last="Peter">Elbe Peter</name><name sortKey="Philip, Koshi" sort="Philip, Koshi" uniqKey="Philip K" first="Koshi" last="Philip">Koshi Philip</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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