Upper incisor exposure and aging: Perceptions of aesthetics in three age groups

Pithon, Matheus Melo; Matos, Vinícius Oliveira; Coqueiro, Raildo da Silva

doi:10.1016/j.ejwf.2015.02.002

Cited by 8 publications

(6 citation statements)

References 15 publications

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“…Gender may be one of the factors in uencing smile aesthetics [18], but some studies [1,26] have shown that, there was no signi cant difference between male and female in evaluating the smile aesthetics, which is consistent with our study. Studies have shown that the gender of the subject could also in uence the perceived smile aesthetics [27,28].…”

Section: Discussionsupporting

confidence: 91%

Aesthetic evaluation of the labiolingual position of maxillary lateral incisors by orthodontists and laypersons

Jiang

Cao

Yang

et al. 2020

Preprint

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BackgroundsThe maxillary anterior teeth play a crucial role in smile aesthetics. As for maxillary lateral incisors, most studies concentrated on its size, incisor edge level, inclination, et al. However, the aesthetic effect of lateral incisor movement in spatial position has not been studied yet. Therefore, the purpose of this study was to explore the influence of labiolingual position of maxillary lateral incisors on the aesthetic perception of orthodontists and laypersons and different gender groups.MethodsA photograph of a male's smile was selected. iOrtho7.0 software (Time Angel, Wuxi, China) was used to edit the three dimensional (3D) dental models. By referring to the 3D models, the photograph was digitally processed to create seven images with different labiolingual positions of the maxillary lateral incisors in 0.5 mm increments (+ indicates labial movement and -indicates lingual movement). Eighty-six orthodontists and one hundred sixty-one laypersons were asked to evaluate images using a visual analog scale. Data were analyzed by Student t-test and One-way analysis of variance with post hoc test.ResultsThere was no significant difference between the perception of males and females (P > 0.05). Orthodontists assigned lower scores to all images than laypersons. +1.5 mm was considered as the least attractive smile by orthodontists while + 1.5 mm and − 1.5 mm were regarded as the least attractive ones by laypersons. 0 mm was rated the most attractive by all judges (P < 0.05). Between the 0 mm and − 0.5 mm, laypersons observed the difference but orthodontists did not.ConclusionsThe labiolingual position of maxillary lateral incisors does affect the perception of smile esthetics. Although orthodontists gave lower score to each image than laypersons.

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Section: Discussionsupporting

confidence: 91%

Aesthetic evaluation of the labiolingual position of maxillary lateral incisors by orthodontists and laypersons

Jiang

Cao

Yang

et al. 2020

Preprint

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“…The rater's sex may be one of the factors in uencing perception of smile aesthetics [18], but some studies [1,26] have shown that there are no signi cant differences between male and female raters, which is consistent with our study. Studies have shown that the sex of the subject whose smile is under evaluation could also in uence the perceived smile aesthetics [27,28].…”

Section: Discussionsupporting

confidence: 91%

Aesthetic evaluation of the labiolingual position of maxillary lateral incisors by orthodontists and laypersons

Jiang

Cao

Yang

et al. 2020

Preprint

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Background: The maxillary anterior teeth play a crucial role in smile aesthetics. Previous studies regarding the importance of maxillary lateral incisors for smile aesthetics concentrated on their size, incisor edge level, and inclination, etc. However, the aesthetic effect of lateral incisor movement in the spatial position has not been studied yet. Therefore, the purpose of this study was to explore the influence of the labiolingual position of maxillary lateral incisors on the aesthetic perception of smiles by orthodontists and laypersons, as well as analyze differences in this perception between male and female raters.Methods: A three-dimensional (3D) dental model was generated from the photograph of a man’s smile using iOrtho7.0 software (Time Angel, Wuxi, China). Based on this model, seven images were generated with different labiolingual positions of the maxillary lateral incisors in 0.5 mm increments (+ indicating labial translation, and - indicating lingual translation). The images were evaluated by 86 orthodontists and 161 laypersons using a visual analog scale, with lower scores indicating less attractiveness. Data were analyzed using Student’s t test and one-way analysis of variance with post hoc test.Results: There was no significant difference in smile ratings by males and females. Orthodontists assigned lower scores to all images than laypersons. The smile at +1.5 mm was considered the least attractive by orthodontists, while smiles at +1.5 mm and -1.5 mm were regarded as the least attractive by laypersons. The smile at 0 mm was evaluated as the most attractive by all raters. Laypersons gave different scores to smiles at 0 or -0.5 mm, but orthodontists did not.Conclusions: The labiolingual position of maxillary lateral incisors does affect the perception of smile aesthetics. Orthodontists may rate smile aesthetics more critically than laypersons. Therefore, communication and discussion between orthodontists and patients is needed to achieve better therapeutic and aesthetic outcomes.

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“…Other studies showed no difference between genders. 14,29 Also, we found that the rating of gingival display and midline diastema was influenced by age of participants (P<0.05 and <0.001, respectively), which is in agreement with what the work of Pithon et al 30 showed.…”

Section: Discussionsupporting

confidence: 90%

<p>Perception of Altered Smile Esthetics by Orthodontists, Dentists, and Laypeople in Riyadh, Saudi Arabia</p>

Aldeeri

Alhababi

Algahtani

et al. 2020

CCIDE

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Upper incisor exposure and aging: Perceptions of aesthetics in three age groups

Cited by 8 publications

References 15 publications

Aesthetic evaluation of the labiolingual position of maxillary lateral incisors by orthodontists and laypersons

Aesthetic evaluation of the labiolingual position of maxillary lateral incisors by orthodontists and laypersons

Aesthetic evaluation of the labiolingual position of maxillary lateral incisors by orthodontists and laypersons

<p>Perception of Altered Smile Esthetics by Orthodontists, Dentists, and Laypeople in Riyadh, Saudi Arabia</p>

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