Perceptions of chin asymmetries among dental professionals and laypersons

Jarosz, Krystian F.; Bósio, José A.; Bloomstein, Richard D.; Jiang, Shuying; Vakharia, Neel S.; Cangialosi, Thomas J.

doi:10.1016/j.ajodo.2017.11.029

Cited by 17 publications

(13 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In our study, the incremental manipulations of the symmetry variable were targeting this type without affecting other parts of the face. As shown in Table 2 , and in agreement with other researches [ 20 , 21 ], the baseline image gave the highest esthetic means compared to the manipulated images at which, after that, the means were declining along with the increase in the incremental manipulations for each rater group. Orthodontists and OMFSs were more sensitive to perceive abnormality in the face symmetry at 2 mm chin point deviation than the GDPs and laypersons who considered this as normal up to 4 mm.…”

Section: Discussionsupporting

confidence: 91%

Thresholds of Abnormality Perception in Facial Esthetics among Laypersons and Dental Professionals: Frontal Esthetics

Alrbata

Alfaqih

Almhaidat

et al. 2020

International Journal of Dentistry

View full text Add to dashboard Cite

Aim. To find thresholds at which laypersons and dental professionals perceive abnormalities in two facial frontal esthetics variables: facial symmetry and vertical harmony. Materials and Methods. A baseline frontal image of a young male face with optimum facial proportions was generated from a real image using a photo editing software. Different facial asymmetry images were then generated from this image by manipulating the chin point position at 2 mm increment to the left side. Vertical harmony was perceived through manipulating lower anterior facial height (LAFH) at a ratio of 2% of increased and decreased heights. A total of 120 raters divided equally into four groups of laypersons, general dental practitioners (GDPs), orthodontists, and oral and maxillofacial surgeons (OMFSs) rated these images using an analog scale of 100 mm long. Using ANOVA and Tukey post hoc tests at P < 0.05 , the image that showed the first statistical difference compared to the baseline was considered as a threshold of abnormality. Results. The image of 4 mm asymmetry was defined by the laypersons and GDPs as the threshold of abnormality, while the orthodontists and OMFSs realized that at 2 mm. Laypersons and GDPs defined a threshold of 46% as an abnormal decrease in the LAFH and the other 2 groups at 48%. All dental professionals groups rated the image of 54% as an abnormal increase in the LAFH while laypersons perceived that at 56%. Conclusion. These thresholds regarding frontal esthetics may contribute to the process of establishing proper orthodontic treatment planning that suits the highest facial esthetic standards.

show abstract

Section: Discussionsupporting

confidence: 91%

Thresholds of Abnormality Perception in Facial Esthetics among Laypersons and Dental Professionals: Frontal Esthetics

Alrbata

Alfaqih

Almhaidat

et al. 2020

International Journal of Dentistry

View full text Add to dashboard Cite

show abstract

“…In addition, our study showed that, orthodontist did not tell difference between 0 mm and − 0.5 mm, while laypersons did. This was not in favor of the previous view that orthodontist were more likely to distinguish between subtle changes in dentition [1][2][3]. Therefore, before orthodontic treatment, communication and discussion between orthodontists and patients is needed to achieve a better therapeutic outcome.…”

Section: Discussionmentioning

confidence: 82%

“…The concept of beauty is unquanti able because it is in uenced by many factors, such as different cultures and creeds. Many studies have demonstrated that orthodontists and laypersons have different perceptions of smile aesthetics, and proved that orthodontists were more sensitive to notice the deviation from ideal than laypersons [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

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

Jiang

Cao

Yang

et al. 2020

Preprint

View full text Add to dashboard Cite

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.

show abstract

“…According to a study conducted among women, orthodontists and dentists noticed a 2° deviation of the chin, while laypeople were able to detect a 3° deviation. In men, the threshold for detecting deviation by orthodontists was 1°, while in laypeople and dentists -2° (33).…”

Section: Discussionmentioning

confidence: 91%

“…Według badania przeprowadzonego wśród kobiet ortodonci i dentyści zauważali 2° zbaczanie bródki, podczas gdy laicy byli w stanie wykryć dewiację wielkości 3°. U mężczyzn próg wykrycia dewiacji przez ortodontów wynosił 1°, podczas gdy przez laików i dentystów -2° (33).…”

Section: Dyskusjaunclassified

Facial asymmetry – aetiology, classification and diagnostics based on the literature

Sobieska¹,

Walerzak²,

Molińska³

2020

for

View full text Add to dashboard Cite

Przyczyny asymetrii mogą być wrodzone, rozwojowe lub nabyte. Klasyfikacje asymetrii są oparte na podstawie różnych kryteriów. Najprostszy podział zależy od objętej zaburzeniem płaszczyzny: asymetrie względem płaszczyzny poprzecznej, pionowej lub strzałkowej. W diagnostyce asymetrii twarzy szczególną rolę odgrywa badanie kliniczne pacjenta oraz badania dodatkowe: zdjęcia radiologiczne 2D i 3D oraz badanie scyntygrafii kości. Cel. Celem pracy było przedstawienie etiologii, klasyfikacji i diagnostyki asymetrii twarzy u pacjentów zgłaszających się do leczenia ortodontycznego. Materiał i metody. Dokonano przeglądu piśmiennictwa z wykorzystaniem bazy PubMed z lat 1986-2019, używając słów kluczowych: asymetria twarzy, asymetria łuku zębowego, PA cefalometria, CBCT. Wybrano prace najbardziej odpowiadajace omawianemu zagadnieniu. Wyniki.

show abstract

Perceptions of chin asymmetries among dental professionals and laypersons

Cited by 17 publications

References 20 publications

Thresholds of Abnormality Perception in Facial Esthetics among Laypersons and Dental Professionals: Frontal Esthetics

Thresholds of Abnormality Perception in Facial Esthetics among Laypersons and Dental Professionals: Frontal Esthetics

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

Facial asymmetry – aetiology, classification and diagnostics based on the literature

Contact Info

Product

Resources

About