Two-dimensional soft tissue changes from 10-35 years: a cross-sectional study
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The Ohio State University / OhioLINK
2019
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| Online Access: | http://rave.ohiolink.edu/etdc/view?acc_num=osu155714207053924 |
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ndltd-OhioLink-oai-etd.ohiolink.edu-osu1557142070539242021-08-03T07:11:00Z Two-dimensional soft tissue changes from 10-35 years: a cross-sectional study Minga, Timothy R. Dentistry Intro: The aim of this study was to: quantify the soft tissue changes that occur from rest to smile in Caucasian adolescents (ages 10-14) and compare those to changes that occur in young adults (ages 21-25) and adults ages (31-35). Differences between males and females were examined. Methods: One hundred and sixty subjects were recruited for this study (in excess of the power analysis estimates of 156 due to concerns regarding image quality). Photographs were obtained at rest and upon posed smile using modified eyewear that was stable and not responsive to smiling movements. The following measurement changes were calculated between rest and smile: Upper lip elevation, lower lip depression, intercommissure width and interlabial gap. Upper lip length and anterior face height were also measured. Test- retest intraclass correlation coefficients were determined for point identification and measurements reliability. Results: Reliability was greater than 0.99 for point identification and measurements reliability. Anterior face height had an effect on the change measurements, which was accounted for as a covariate in the statistical analysis of all of the different soft tissue measurement changes. Analysis of covariance of the changes of all 5 distances showed a significant 3-way interactions between sex, age, and measurement of interest (p< 0.0002). There was a statistically significant difference between the 10-14 year old males and females, with females lower lips moving 0.58 mm lower than males when smiling (p< 0.012). The 21-25 year old males lower lips also moved 0.79 mm lower than the 10-14 year old males (p<0.001). These changes were not clinically significant because they were less than 1 mm. All other measurement changes were not significant.Conclusions: There are no significant age and sex related perioral soft tissue changes that occur between rest and posed smile for Caucasians from ages 10-35 years. 2019-10-23 English text The Ohio State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=osu155714207053924 http://rave.ohiolink.edu/etdc/view?acc_num=osu155714207053924 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws. |
| collection |
NDLTD |
| language |
English |
| sources |
NDLTD |
| topic |
Dentistry |
| spellingShingle |
Dentistry Minga, Timothy R. Two-dimensional soft tissue changes from 10-35 years: a cross-sectional study |
| author |
Minga, Timothy R. |
| author_facet |
Minga, Timothy R. |
| author_sort |
Minga, Timothy R. |
| title |
Two-dimensional soft tissue changes from 10-35 years: a cross-sectional study |
| title_short |
Two-dimensional soft tissue changes from 10-35 years: a cross-sectional study |
| title_full |
Two-dimensional soft tissue changes from 10-35 years: a cross-sectional study |
| title_fullStr |
Two-dimensional soft tissue changes from 10-35 years: a cross-sectional study |
| title_full_unstemmed |
Two-dimensional soft tissue changes from 10-35 years: a cross-sectional study |
| title_sort |
two-dimensional soft tissue changes from 10-35 years: a cross-sectional study |
| publisher |
The Ohio State University / OhioLINK |
| publishDate |
2019 |
| url |
http://rave.ohiolink.edu/etdc/view?acc_num=osu155714207053924 |
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AT mingatimothyr twodimensionalsofttissuechangesfrom1035yearsacrosssectionalstudy |
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