Kanza Tahir BDS, Afeefa Abul Barakaat BDS, Umair Shaukat BDS, FCPS II, Muhammad Maaz BDS, FCPS II, Mubassar Fida BDS, MCPS & FCPS (Orthodontics), MCPS (Periodontology), MCPS (Community Dentistry), PGD HIMS, Rashna Hoshang Sukhia BDS, MSc (Epidemiology and Biostatistics), FCPS, MOrth RCSEd, FFD Orth RCSI, FHEA
{"title":"牙齿中线与面部流线的偏差对微笑美学的影响--一项横断面研究。","authors":"Kanza Tahir BDS, Afeefa Abul Barakaat BDS, Umair Shaukat BDS, FCPS II, Muhammad Maaz BDS, FCPS II, Mubassar Fida BDS, MCPS & FCPS (Orthodontics), MCPS (Periodontology), MCPS (Community Dentistry), PGD HIMS, Rashna Hoshang Sukhia BDS, MSc (Epidemiology and Biostatistics), FCPS, MOrth RCSEd, FFD Orth RCSI, FHEA","doi":"10.1111/jerd.13298","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <h3> Background/Objective</h3>\n \n <p>A contemporary concept states that dental midline deviation towards the direction of facial flow line (FFL) can mask the compromised smile esthetics. This study aimed to identify a range of midline deviations that can be perceived towards or away from the FFL influencing smile esthetics.</p>\n </section>\n \n <section>\n \n <h3> Materials and Methods</h3>\n \n <p>A cross-sectional study was conducted using a frontal smile photograph of an adult female. The photograph was altered on Adobe Photoshop software into six different photographs by deviating the dental midlines towards and away from the FFL. A constant deviation of chin towards the left side was incorporated in all the photographs. Forty-three laypersons (LP) and dental professionals (DPs) evaluated those photographs. Independent <i>t</i>-test was used to compare the perception of dental midline deviation between LP and DPs. Simple linear regression was run to identify the factors associated with the scoring.</p>\n </section>\n \n <section>\n \n <h3> Results</h3>\n \n <p>A statistically significant difference was observed for picture two with 4 mm towards FFL in the perception of midline deviation between LP and DPs. LP could not perceive the midline deviations up to 4 mm while DPs were able to perceive deviations above 2 mm. The greater the age the better the scores were and female raters had a greater inclination towards poor scores.</p>\n </section>\n \n <section>\n \n <h3> Conclusions</h3>\n \n <p>From 2 to 4 mm of midline deviation towards the FFL can be tolerated by LP and DPs.</p>\n </section>\n \n <section>\n \n <h3> Clinical Significance</h3>\n \n <p>These findings underscore the importance of considering facial symmetry in orthodontic and cosmetic dental treatments to optimize smile esthetics.</p>\n </section>\n </div>","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":null,"pages":null},"PeriodicalIF":3.2000,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of dental midline deviation with respect to facial flow line on smile esthetics—A cross-sectional study\",\"authors\":\"Kanza Tahir BDS, Afeefa Abul Barakaat BDS, Umair Shaukat BDS, FCPS II, Muhammad Maaz BDS, FCPS II, Mubassar Fida BDS, MCPS & FCPS (Orthodontics), MCPS (Periodontology), MCPS (Community Dentistry), PGD HIMS, Rashna Hoshang Sukhia BDS, MSc (Epidemiology and Biostatistics), FCPS, MOrth RCSEd, FFD Orth RCSI, FHEA\",\"doi\":\"10.1111/jerd.13298\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n \\n <section>\\n \\n <h3> Background/Objective</h3>\\n \\n <p>A contemporary concept states that dental midline deviation towards the direction of facial flow line (FFL) can mask the compromised smile esthetics. This study aimed to identify a range of midline deviations that can be perceived towards or away from the FFL influencing smile esthetics.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Materials and Methods</h3>\\n \\n <p>A cross-sectional study was conducted using a frontal smile photograph of an adult female. The photograph was altered on Adobe Photoshop software into six different photographs by deviating the dental midlines towards and away from the FFL. A constant deviation of chin towards the left side was incorporated in all the photographs. Forty-three laypersons (LP) and dental professionals (DPs) evaluated those photographs. Independent <i>t</i>-test was used to compare the perception of dental midline deviation between LP and DPs. Simple linear regression was run to identify the factors associated with the scoring.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Results</h3>\\n \\n <p>A statistically significant difference was observed for picture two with 4 mm towards FFL in the perception of midline deviation between LP and DPs. LP could not perceive the midline deviations up to 4 mm while DPs were able to perceive deviations above 2 mm. 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Influence of dental midline deviation with respect to facial flow line on smile esthetics—A cross-sectional study
Background/Objective
A contemporary concept states that dental midline deviation towards the direction of facial flow line (FFL) can mask the compromised smile esthetics. This study aimed to identify a range of midline deviations that can be perceived towards or away from the FFL influencing smile esthetics.
Materials and Methods
A cross-sectional study was conducted using a frontal smile photograph of an adult female. The photograph was altered on Adobe Photoshop software into six different photographs by deviating the dental midlines towards and away from the FFL. A constant deviation of chin towards the left side was incorporated in all the photographs. Forty-three laypersons (LP) and dental professionals (DPs) evaluated those photographs. Independent t-test was used to compare the perception of dental midline deviation between LP and DPs. Simple linear regression was run to identify the factors associated with the scoring.
Results
A statistically significant difference was observed for picture two with 4 mm towards FFL in the perception of midline deviation between LP and DPs. LP could not perceive the midline deviations up to 4 mm while DPs were able to perceive deviations above 2 mm. The greater the age the better the scores were and female raters had a greater inclination towards poor scores.
Conclusions
From 2 to 4 mm of midline deviation towards the FFL can be tolerated by LP and DPs.
Clinical Significance
These findings underscore the importance of considering facial symmetry in orthodontic and cosmetic dental treatments to optimize smile esthetics.
期刊介绍：
The Journal of Esthetic and Restorative Dentistry (JERD) is the longest standing peer-reviewed journal devoted solely to advancing the knowledge and practice of esthetic dentistry. Its goal is to provide the very latest evidence-based information in the realm of contemporary interdisciplinary esthetic dentistry through high quality clinical papers, sound research reports and educational features.
The range of topics covered in the journal includes:
- Interdisciplinary esthetic concepts
- Implants
- Conservative adhesive restorations
- Tooth Whitening
- Prosthodontic materials and techniques
- Dental materials
- Orthodontic, periodontal and endodontic esthetics
- Esthetics related research
- Innovations in esthetics
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