Lip position analysis of young women with different skeletal patterns during posed smiling using 3-dimensional stereophotogrammetry

Li, Haizhen; Cao, Tian; Zhou, Hong; Hou, Yuxia

doi:10.1016/j.ajodo.2018.03.014

Cited by 12 publications

(6 citation statements)

References 19 publications

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“…The study was approved by the Ethics Committee of Peking University School and Hospital of Stomatology (PKUSSIRB-201,948,110). The sample size of this preliminary study was determined according to historical studies (Solem RC et al [ 11 ]: 24 subjects; Jung J et al [ 12 ]: 32 subjects; Li H et al [ 13 ]: 50 subjects).…”

Section: Methodsmentioning

confidence: 99%

Measurement of three‐dimensional changes in lip vermilion in adult female patients after orthodontic extraction: a retrospective longitudinal study

et al. 2021

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Background 3D facial scanning has changed the way facial aesthetic is evaluated and has numerous advantages for facial analysis. The specific relationship between lip vermilion morphological changes after orthodontic extraction treatment has not been fully explained. The objective of this study was to evaluate 3D morphological changes after orthodontic extraction treatment in lip vermilion of adult females with dentoalveolar protrusion using a structured light-based scanner. Methods Forty-two female subjects (25.2 ± 1.9 years) were recruited as the treatment group; these patients had undergone extraction treatment and achieved better sagittal profiles. Twenty female subjects (25.5 ± 2.1 years) were enrolled in the non-treatment group; these patients did not require any orthodontic treatment. The follow up time for the treatment group was more than 24 months and for the non-treatment group was more than 12 months. 3D facial scans were captured using 3D CaMega. Six landmarks (Ls, Li, R.Chp, L.Chp, R.Ch, and L.Ch), three linear measurements (mouth height, philtrum width, and mouth width), and three area measurements (upper, lower, and total vermilion area) were measured. The spatial deviations of three volumetric measurements (upper, lower, and total vermilion) were constructed for quantitative analysis. Color-coded displacement map were constructed for visualization of the soft-tissue displacement as qualitative evaluation. Results Mouth height and philtrum width decreased (-0.93 mm and − 1.08 mm, respectively) significantly (p = 0.008 and p = 0.027, respectively), and no significant (p = 0.488) change in mouth width was observed in the treatment group. The lower and total vermilion surface areas decreased (-51.00mm2 and − 69.82mm2, respectively) significantly (p = 0.003 and p = 0.031, respectively) in the treatment group, but no statistically significant (p = 0.752) change was detected in the upper vermilion. In the treatment group, significant retractions were observed in the color-coded displacement map, and three volumetric measurements of vermilion changed significantly (p = 0.012, p = 0.001 and p = 0.004, respectively). Significant differences were found between the treatment group and the non-treatment group in the linear, area and volumetric measurements. Conclusions This study established a method for qualitative and quantitative evaluation of the lip vermilion. Significant 3D retraction of the lip vermilion after the extraction treatment was found, with morphological variation between upper and lower vermilion.

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Section: Methodsmentioning

confidence: 99%

Measurement of three‐dimensional changes in lip vermilion in adult female patients after orthodontic extraction: a retrospective longitudinal study

et al. 2021

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“…Smile line: Although this factor is influenced by the age and gender of the patient [18], gum exposure when smiling ideally does not exceed 2 mm in young adult patients [12,13,19]. It could be high (more than 100% of the crown exposure of the upper central incisor), average (between 75% and 100% of the central incisor exposure), or low (less than 75% of the central incisor exposure).…”

Section: Data Extractionmentioning

confidence: 99%

Finishing Analysis of Dental Outcome (FADO) as a New Guide in Orthodontic Treatment

Zapata¹,

Barbosa²,

Carvajal³

et al. 2023

Cureus

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Objectives: Orthodontic treatment has both functional and esthetic goals. The finishing phase is one of the most important and seeks to solve occlusal, dental, functional, and esthetic problems, offering the possibility of obtaining the best possible outcome. This paper aims to describe the Finishing Analysis of Dental Outcome (FADO) guide as a tool to improve orthodontic treatment results.Methods: A literature review of finishing procedures and orthodontic treatment outcomes was made. Moreover, current parameters of the esthetics of the smile were considered. The information was systematized to produce a protocol applicable to practice. This guide includes the assessment of miniesthetic, micro-esthetic, and occlusal results using the Cast Radiographic Evaluation of the American Board of Orthodontics. Treatment options for each item were also suggested. Clinical cases were used to illustrate the application of the guide.Results: The FADO Guide is presented and explained to give the clinician a systematic and orderly guide to achieve the best possible results in orthodontic treatment. To fulfill the FADO Guide, cast models, a panoramic radiograph, smile photographs (frontal and lateral), and an intraoral frontal photo are needed. The FADO Guide includes four sections: mini-esthetic evaluation (the evaluation of the smile), microesthetic evaluation, occlusal analysis, and radiographic analysis. Conclusion:The FADO guide presents a systematic approach to the application of a finishing protocol in orthodontics. Furthermore, this guideline can improve clinical practice and be used as a checklist to optimize clinical outcomes.

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“…The study was approved by the Ethics Committee of Peking University School and Hospital of Stomatology (PKUSSIRB-201948110). The sample size of this preliminary study was determined according to historical studies (Solem RC et al [11]: 24 subjects; Jung J et al [12]: 32 subjects; Li H et al [13]: 50 subjects).…”

Section: Subjectsmentioning

confidence: 99%

Measurement of three-dimensional changes in lip vermilion in adult female patients after orthodontic extraction: a preliminary study

Shen

Xie

Jiang

et al. 2020

Preprint

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Background: 3D facial scanning has changed the way facial aesthetic is evaluated and has numerous advantages for facial analysis. The specific relationship between lip vermilion morphological changes after orthodontic extraction treatment has not been fully explained. The objective of this study was to evaluate 3D morphological changes after orthodontic extraction treatment in lip vermilion of adult females with dentoalveolar protrusion using a structured light-based scanner. Methods: Forty-two female subjects (25.2 ± 1.9 years) were recruited as the treatment group; these patients had undergone extraction treatment and achieved better sagittal profiles. Twenty female subjects (25.5 ± 2.1 years) were enrolled in the non-treatment group; these patients did not require any orthodontic treatment. The follow up time for the treatment group was more than 24 months and for the non-treatment group was more than 12 months. 3D facial scans were captured using 3D CaMega. Six landmarks (Ls, Li, R.Chp, L.Chp, R.Ch, and L.Ch), three linear measurements (mouth height, philtrum width, and mouth width), and three area measurements (upper, lower, and total vermilion area) were measured. The spatial deviations of the three volumetric measurements (upper, lower, and total vermilion) were constructed for quantitative analysis. Superimposed colour maps and spectra were constructed for visual analysis of morphological changes as a qualitative evaluation. Results: Mouth height and philtrum width decreased (-0.93mm and -1.08mm, respectively) significantly (p=0.008 and p=0.027, respectively), and no significant (p=0.488) change in mouth width was observed in the treatment group. The lower and total vermilion surface areas decreased (-51.00mm2 and -69.82mm2 , respectively) significantly (p=0.003 and p=0.031, respectively) in the treatment group, but the upper vermilion remained unchanged (p=0.752). In the treatment group, significant retractions were observed in the superimposed colour maps and spectra, and the volumetric measurements of the vermilion changed significantly (p=0.012, p=0.001 and p=0.004, respectively). Significant differences were found between the treatment group and the non-treatment group in linear, area and volumetric measurements. Conclusions: This study established a method for qualitative and quantitative evaluation of the lip vermilion. Significant 3D retraction of the lip vermilion after the extraction treatment was found, with morphological variation between upper and lower vermilion.

show abstract

Lip position analysis of young women with different skeletal patterns during posed smiling using 3-dimensional stereophotogrammetry

Cited by 12 publications

References 19 publications

Measurement of three‐dimensional changes in lip vermilion in adult female patients after orthodontic extraction: a retrospective longitudinal study

Measurement of three‐dimensional changes in lip vermilion in adult female patients after orthodontic extraction: a retrospective longitudinal study

Finishing Analysis of Dental Outcome (FADO) as a New Guide in Orthodontic Treatment

Measurement of three-dimensional changes in lip vermilion in adult female patients after orthodontic extraction: a preliminary study

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