A study of the effect of changes in nasal tip prominence on the sense of anterior prominence of the upper lip
Objective The aim of this study was to investigate the effect of changes in nasal tip protrusion on the sense of upper lip protrusion in different populations and to provide a reference for the improvement of soft tissue beauty. Methods Informed consent and portrait authorization were obtained from...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal of Prevention and Treatment for Stomatological Diseases
2023-05-01
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| Series: | 口腔疾病防治 |
| Subjects: | |
| Online Access: | http://www.kqjbfz.com/CN/10.12016/j.issn.2096-1456.2023.05.006 |
| _version_ | 1811173199282438144 |
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| author | ZHUANG Ziting BAO Rui LI Menghuan WANG Weicai BAO Baicheng |
| author_facet | ZHUANG Ziting BAO Rui LI Menghuan WANG Weicai BAO Baicheng |
| author_sort | ZHUANG Ziting |
| collection | DOAJ |
| description | Objective The aim of this study was to investigate the effect of changes in nasal tip protrusion on the sense of upper lip protrusion in different populations and to provide a reference for the improvement of soft tissue beauty. Methods Informed consent and portrait authorization were obtained from the model. A female model whose face met the criteria was selected, and a 3D model of her was obtained using a 3D stereo camera. Based on the original model, ZBRUSH2019 software was used to simulate changes in nose tip protrusion. Then, 9 segments of facial dynamic rotation videos were produced, and an electronic questionnaire was created through a questionnaire website to evaluate the effect of different nose tip protrusions on perceived upper lip protrusion. Randomly selected orthodontic patients, orthodontics professionals and general adults completed the electronic questionnaire. In the questionnaire, a Visual Analog Scale was used to evaluate the perceived degree of protrusion of the upper lip. The higher the score, the more prominent the upper lip of the model in the image. The questionnaire data were statistically analyzed using a generalized linear mixed model. Results As the nasal tip position became progressively more retracted, the subjects' upper lip protrusion scores increased. Among male subjects, the results showed that the general population thought that the upper lip protrusion was higher than the patients did when the nasal tip protrusion was +6 mm and +4.5 mm (P = 0.023, P = 0.047). When the nasal tip protrusion was +6 mm, the scores of the general population were higher than those of the orthodontics professionals (P = 0.023). However, when the nasal tip variable was -6 mm, their score was lower than that of the patients (P = 0.003), and there was no significant difference in other retest distances between groups (P>0.05). Conclusion When the protrusion of the nasal tip decreased, the three groups experienced a visual illusion of upper lip protrusion. When the nasal tip protrusion is too large, the general population perceived the visual illusion of the upper lip protrusion as being more obvious. |
| first_indexed | 2024-04-10T17:42:48Z |
| format | Article |
| id | doaj.art-04607c3debb142b593d43478df3281c6 |
| institution | Directory Open Access Journal |
| issn | 2096-1456 |
| language | zho |
| last_indexed | 2024-04-10T17:42:48Z |
| publishDate | 2023-05-01 |
| publisher | Editorial Department of Journal of Prevention and Treatment for Stomatological Diseases |
| record_format | Article |
| series | 口腔疾病防治 |
| spelling | doaj.art-04607c3debb142b593d43478df3281c62023-02-03T06:18:30ZzhoEditorial Department of Journal of Prevention and Treatment for Stomatological Diseases口腔疾病防治2096-14562023-05-0131534535110.12016/j.issn.2096⁃1456.2023.05.006A study of the effect of changes in nasal tip prominence on the sense of anterior prominence of the upper lipZHUANG Ziting0 BAO Rui 1 LI Menghuan2 WANG Weicai3 BAO Baicheng4Department of Orthodontics, Hospital of Stomatology, Sun Yat-sen UniversityStatistical Information Section-Medical Record Room, Stomatological Hospital, Southern Medical UniversityDepartment of Orthodontics, Hospital of Stomatology, Sun Yat-sen UniversityDepartment of Orthodontics, Hospital of Stomatology, Sun Yat-sen UniversityDepartment of Orthodontics, Hospital of Stomatology, Sun Yat-sen UniversityObjective The aim of this study was to investigate the effect of changes in nasal tip protrusion on the sense of upper lip protrusion in different populations and to provide a reference for the improvement of soft tissue beauty. Methods Informed consent and portrait authorization were obtained from the model. A female model whose face met the criteria was selected, and a 3D model of her was obtained using a 3D stereo camera. Based on the original model, ZBRUSH2019 software was used to simulate changes in nose tip protrusion. Then, 9 segments of facial dynamic rotation videos were produced, and an electronic questionnaire was created through a questionnaire website to evaluate the effect of different nose tip protrusions on perceived upper lip protrusion. Randomly selected orthodontic patients, orthodontics professionals and general adults completed the electronic questionnaire. In the questionnaire, a Visual Analog Scale was used to evaluate the perceived degree of protrusion of the upper lip. The higher the score, the more prominent the upper lip of the model in the image. The questionnaire data were statistically analyzed using a generalized linear mixed model. Results As the nasal tip position became progressively more retracted, the subjects' upper lip protrusion scores increased. Among male subjects, the results showed that the general population thought that the upper lip protrusion was higher than the patients did when the nasal tip protrusion was +6 mm and +4.5 mm (P = 0.023, P = 0.047). When the nasal tip protrusion was +6 mm, the scores of the general population were higher than those of the orthodontics professionals (P = 0.023). However, when the nasal tip variable was -6 mm, their score was lower than that of the patients (P = 0.003), and there was no significant difference in other retest distances between groups (P>0.05). Conclusion When the protrusion of the nasal tip decreased, the three groups experienced a visual illusion of upper lip protrusion. When the nasal tip protrusion is too large, the general population perceived the visual illusion of the upper lip protrusion as being more obvious.http://www.kqjbfz.com/CN/10.12016/j.issn.2096-1456.2023.05.006orthodonticsdentalfacial aestheticsvisual illusion3dmd3d imagenasal tip prominencelip protrusion |
| spellingShingle | ZHUANG Ziting BAO Rui LI Menghuan WANG Weicai BAO Baicheng A study of the effect of changes in nasal tip prominence on the sense of anterior prominence of the upper lip 口腔疾病防治 orthodontics dental facial aesthetics visual illusion 3dmd 3d image nasal tip prominence lip protrusion |
| title | A study of the effect of changes in nasal tip prominence on the sense of anterior prominence of the upper lip |
| title_full | A study of the effect of changes in nasal tip prominence on the sense of anterior prominence of the upper lip |
| title_fullStr | A study of the effect of changes in nasal tip prominence on the sense of anterior prominence of the upper lip |
| title_full_unstemmed | A study of the effect of changes in nasal tip prominence on the sense of anterior prominence of the upper lip |
| title_short | A study of the effect of changes in nasal tip prominence on the sense of anterior prominence of the upper lip |
| title_sort | study of the effect of changes in nasal tip prominence on the sense of anterior prominence of the upper lip |
| topic | orthodontics dental facial aesthetics visual illusion 3dmd 3d image nasal tip prominence lip protrusion |
| url | http://www.kqjbfz.com/CN/10.12016/j.issn.2096-1456.2023.05.006 |
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