scholarly journals Do different vertical positions of maxillary central incisors influence smile esthetics perception?

2017 ◽  
Vol 22 (2) ◽  
pp. 95-105 ◽  
Author(s):  
Erica Bretas Cabral Menezes ◽  
Marcos Alan Vieira Bittencourt ◽  
Andre Wilson Machado
Keyword(s):  
Analysis Of Variance ◽  
Visual Analog Scale ◽  
Vertical Position ◽  
Adult Women ◽  
Test Results ◽  
Central Incisor ◽  
Analog Scale ◽  
Full Face ◽  
Smile Esthetics ◽  
Post Hoc

ABSTRACT INTRODUCTION: The purpose of this study was to determine the perception of smile esthetics among orthodontists and layperson, with respect to different maxillary central incisors vertical positions in full-face and close-up smile analyses. METHODS: Frontal photographs of the smiles of two adult women were used. Images were altered to create a symmetrical image with the gingival margin levels of the maxillary canines matching the central incisors and a 1.0-mm central-to-lateral incisal step. Later, the images were altered in order to create six different central incisor vertical positions in 0.5-mm increments. The images were randomly assembled in an album, which was given to 114 judges, 57 orthodontists and 57 laypersons, who were asked to evaluate the attractiveness of the images using the visual analog scale. The data collected were statistically analyzed by means of 1-way analysis of variance with the Tukey post-hoc test and the Student t test. RESULTS: The highest rated smiles showed two notable characteristics: a) the central incisor gingival margins matched or were 0.5 mm below the line of the canine gingival margins and; b) the central-to-lateral incisal step was 1.0 to 1.5 mm. The worst smiles showed two notable characteristics: a) the central incisor gingival margins were 1.0 mm above or 1.5 mm below the canine gingival margins and; b) no step between the centrals and laterals or a 2.5-mm step. CONCLUSION: The vertical position of the maxillary central incisors significantly affected the perception of the smile esthetics, whereas slightly extruded central incisors were more esthetically preferred than intruded.

scholarly journals Influence of maxillary canine torque variations on the perception of smile esthetics among orthodontists and laypersons

2019 ◽  
Vol 24 (1) ◽  
pp. 53-61 ◽  
Author(s):  
Thiago Correia Barbosa Lemos ◽  
Juliana de Brito Vasconcelos ◽  
Bianca Mota dos Santos ◽  
Andre Wilson Machado
Keyword(s):  
Analysis Of Variance ◽  
T Test ◽  
Test Results ◽  
Maxillary Canine ◽  
Visual Analog Scales ◽  
Significant Difference ◽  
Unpaired Student ◽  
Full Face ◽  
Smile Esthetics ◽  
Post Hoc

ABSTRACT Objective: The purpose of this study was to determine the perception of smile esthetics among orthodontists and laypersons with respect to unilateral maxillary canine torque variations in a frontal smile analysis. Methods: Full face and close-up smile photographs of two subjects (1 man and 1 woman) were used. Both smiles displayed healthy maxillary anterior dentitions. The images were digitally altered to obtain a bilateral 0° torque in the maxillary canines. From this image, unilateral variations of the left canine were made with -15°, -10°, -5°, 0°, +5°, +10° and +15°. Final images were randomly assembled into an album that was given to 53 orthodontists and 53 laypersons. Each rater was asked to evaluate the attractiveness of the images using visual analog scales. Data collected were statistically analyzed with one-way analysis of variance with Tukey post-hoc test and the unpaired Student t test. Results: For orthodontists, most attractive smiles were those with 0°, -5° and -10°. For laypersons, most attractive smiles were those with 0°, -5°, -10°, -15° and + 5°. For both groups, the lowest scores were given for the smiles with +10° and +15° torque. When comparing the perceptions of the orthodontists and laypersons, they did not show statistical differences in most situations. Moreover, in general, there was no significant difference between the full-face and close-up assessments of the smiles. Conclusions: The present findings indicated that smiles with unilateral palatal (negative values) maxillary canine torque variations were more tolerated than smiles with buccal crown torque (positive values) variations.

scholarly journals Does the presence of unilateral gingival recession on maxillary canines influence smile esthetics?

2020 ◽  
Vol 25 (1) ◽  
pp. 56-63
Author(s):  
Bruna Alecrim Figueiredo ◽  
Joanna Betrine Pereira Ribeiro ◽  
Andre Wilson Machado
Keyword(s):  
Visual Analog Scale ◽  
Gingival Recession ◽  
White Female ◽  
Test Results ◽  
Analog Scale ◽  
Photo Album ◽  
Smile Esthetics ◽  
Post Hoc ◽  
Different Levels ◽  
Scale Data

ABSTRACT Objective: The objective of this study was to determine orthodontists’, periodontists’, and laypersons’ perception of smile esthetics, regarding the presence of different levels of gingival recession on the maxillary left canine. Material and Methods: Two close-up smile images (frontal and oblique) of a white female were selected for this study. The images were digitally altered to create different levels of gingival recession on maxillary left canine, in 0.5-mm increments. They were randomly arranged into a photo album that was shown to 135 evaluators: 45 orthodontists, 45 periodontists, and 45 laypersons. Each evaluator was asked to rate the smile attractiveness, using to a visual analog scale. Data were analyzed statistically using ANOVA, Tukey’s post-hoc test, and Student t-test. Results: According to the orthodontists and periodontists, all levels of recession were considered as unesthetic in both types of images. According to the laypersons, gingival recession > 1.5 mm in the frontal image and > 1.0 mm in the oblique image were considered unesthetic. Conclusion: The results showed that the presence of unilateral gingival recession on maxillary canines may negatively influence smile attractiveness, depending on the evaluator type and the level of the recession.

INFLUENCE OF SYMMETRIC & ASYMMETRIC ALTERATIONS OF MAXILLARY CANINE POSITION ON THE PERCEPTION OF SMILE ESTHETICS BY DENTISTS & LAYPERSONS.

2021 ◽  
pp. 43-44
Author(s):  
S.Anitha Rao ◽  
Kolli Tejaswi Chowdary ◽  
Nanditha Nandagiri ◽  
C.S. Soonu
Keyword(s):  
Visual Analog Scale ◽  
Vertical Position ◽  
Analog Scale ◽  
Maxillary Canine ◽  
Smile Esthetics

OBJECTIVE: The objective of this study was to evaluate the differences in the perception of smile esthetics in symmetric & asymmetric alterations of maxillary canine position by dentists and laypersons. MATERIALS AND METHODS: A Close-up smile photograph of an Indian female was selected. The image was altered digitally & the canine vertical position was modied. A total of 9 images were obtained & were evaluated by 35 dentists and by 35 laypersons who determined the attractiveness of each smile using a Visual Analog Scale. RESULTS: For both dentists and laypersons; the symmetric & asymmetric alterations in canine vertical positions had a statistically signicant correlation (P < 0.05). CONCLUSION: For both dentists and laypersons the most attractive smile was the standard smile and the smile that was least attractive was with bilateral 1 mm extrusion. Dentists were more critical in their assessment.

scholarly journals Perception and Characterization of Posed Smile: A Photographic Study

2020 ◽  
pp. 030157422096341
Author(s):  
Sukhpal Kaur ◽  
Sanjeev Soni ◽  
Anil Prashar ◽  
and Rajdeep Kaur
Keyword(s):  
Visual Analog Scale ◽  
Digital Camera ◽  
Analog Scale ◽  
Male And Female ◽  
Maxillary Tooth ◽  
Significant Difference ◽  
Smile Esthetics ◽  
Relationship Of ◽  
Buccal Corridor

Aims of the Study: The aims of the study are: (a) to compare the perceptions of dental specialists and laypeople regarding smile esthetics; (b) to compare male and female smile parameters; (c) to find influence of smile parameters on esthetics of smile. Materials and Methods: The study was conducted on 60 subjects (30 males and 30 females) of age 18 to 25 years. Frontal posed photographs of all subjects were taken using a digital camera and rated on a visual analog scale by 10 dental specialists and 10 laypersons. Measurements made on photographs were used to analyze various parameters of smile, such as buccal corridor space, smile arc, modified smile index, anterior height of smile, most posterior maxillary tooth visible, and midline relationship of central incisors to philtrum. Results: Visual analog scale values showed that 6 photographs were rated as very good (3 males, 3 females), 29 as good (11 males, 18 females), 21 as average (13 males, 8 females), and 4 photographs were rated as bad (3 males, 1 female). A high correlation was observed between ratings of dental specialists and layperson’s ratings for both male and female smiles. Most of the subjects had non-consonant smile arc, and a high correlation was found between buccal corridor space on right and left sides in both males and females. Most of the male and female smiles had an average anterior height of smile; permanent maxillary first molar was the last tooth visible during smile (73.3% females, 66.7 males); and 55% subjects had coincident midline relationship of central incisors to philtrum. Conclusion: There was no significant difference in perception of dental specialists and laypersons regarding esthetics of smile. Smile arc and anterior height of smile influenced the esthetics of smile. No significant difference was found between male and female smile parameters except modified smile index.

Q-sort assessment vs visual analog scale in the evaluation of smile esthetics

2009 ◽  
Vol 135 (4) ◽  
pp. S61-S71 ◽  
Author(s):  
Brian J. Schabel ◽  
James A. McNamara ◽  
Lorenzo Franchi ◽  
Tiziano Baccetti
Keyword(s):  
Visual Analog Scale ◽  
Analog Scale ◽  
Smile Esthetics ◽  
Q Sort

scholarly journals Effect of Buccal Corridors Width on Smile Quality and Esthetics

2021 ◽  
Vol 30 (03) ◽  
pp. 204-208
Author(s):  
Hina Siddiqui ◽  
◽  
Sadia Rizwan ◽  
Syed Shah Faisal ◽  
Syed Sheeraz Hussain
Keyword(s):  
Cross Sectional Study ◽  
Width Ratio ◽  
Sectional Study ◽  
Analog Scale ◽  
Cross Sectional ◽  
General Dentists ◽  
Smile Esthetics ◽  
Post Hoc ◽  
Buccal Corridor ◽  
General Dentist

OBJECTIVE: To assess the perception of buccal corridor width on smile esthetics by Orthodontic residents, General dentists and Laypersons. METHODOLOGY: A smile photograph was taken of an adult female. The image was modified to obtain five different buccal corridor widths and were assessed by different evaluators grouped into general dentist, orthodontic resident and laypersons who rated the attractiveness of each smile by means of a visual analog scale (VAS). Sample size was 97 participants to rate the picture. Non-probability purposive sampling was done The data was analyzed and mean and SD were calculated for the scores of rating. ANOVA and Tukey's post hoc test was applied to compare the different ratings of buccal corridors in three groups. The data of this cross sectional study was collected from general population belonging to different communities, general dentists and orthodontic residents of different dental colleges of Karachi, Pakistan from August 2019 to March 2020. RESULTS: There were 97 participants who responded to the images. Highest scores were obtained for Image 1 having buccal corridor width ratio of 16% followed by image no. 3 having buccal corridor width ratio of 10% and lowest scores were obtained for Image no. 6 having least buccal corridor widths ratio that is 34% followed by image no 5 having 26% buccal corridor widths. Among the groups of participants, the highest scores were given by laypersons for all images. Significant differences were observed between evaluation of groups of Orthodontic resident and layperson in most images. CONCLUSION: There was a remarkable influence of buccal corridor width on smile esthetics, with the 16% ratio group being rated as the most attractive by all three groups. KEYWORDS: Buccal corridors, Smile, esthetics, Attractiveness

scholarly journals BUCCAL CORRIDOR YANG LEBIH MENARIK PADA ESTETIK SENYUM

2017 ◽  
Vol 4 (1) ◽  
pp. 1
Author(s):  
Nety Trisnawaty
Keyword(s):  
Visual Analog Scale ◽  
Orthodontic Treatment ◽  
Dental Students ◽  
Dental School ◽  
Analog Scale ◽  
Dental Aesthetics ◽  
Smile Esthetics ◽  
Smile Aesthetics ◽  
Buccal Corridor

Background: The objectives of orthodontic treatment are not only to obtain functional occlusion but also to improve facial and dental aesthetics. Three aspects of smile aesthetics have recently received great attention: the amount of gingival display, the presence of the smile arc, and buccal corridor spaces.The purpose of this study was to evaluation that the amount of buccal corridor on smile esthetics of dentists and dental students.Method: The population and subjects this study were dentists and dentalstudents of dental school from Faculty of Dentistry University Prof. Dr. Moestopo (Beragama). Using a Visual Analog Scale (VAS), dentists and  dental students rated the attractiveness of six smiles with altered buccal corridors.Result: There was no significant different in judging the effect of buccal  corridors on the smile attractiveness between dentists and dental students.Conclusion: Both the dentists and dental students preferred medium sizes of buccal corridor (buccal corridor 15%).

scholarly journals Does the presence of maxillary midline diastema influence the perception of dentofacial esthetics in video analysis?

2020 ◽  
Vol 91 (1) ◽  
pp. 54-60
Author(s):  
Priscila Rios Bomfim Chaves ◽  
Alexandre Melo Karam ◽  
Andre Wilson Machado
Keyword(s):  
Analysis Of Variance ◽  
Video Analysis ◽  
Acrylic Resin ◽  
Anterior Region ◽  
Frontal View ◽  
Visual Analog Scales ◽  
Level Of Significance ◽  
Smile Esthetics ◽  
Post Hoc ◽  
The Ideal

ABSTRACT Objective To evaluate the influence of a midline diastema on dentofacial esthetic perceptions of orthodontists, restorative dental specialists or prosthodontists, and laypersons in a frontal facial evaluation performed by means of video. Materials and Methods Two individuals aged between 20 and 25 years, one of each gender, with presence of a midline diastema were selected. An acrylic resin mockup was made of the maxillary anterior region, simulating ideal conditions of smile esthetics. Four standardized frontal view videos of the complete face were filmed of each individual in the following situations: with the ideal smile (unchanged mockup) and with the presence of midline diastemas of 0.5, 1.0, and 1.5 mm created by the mockup. In all videos, the patient said a certain sentence and, at the end, simulated a posed smile. Dentofacial esthetic perceptions of all four videos of each individual were evaluated by 51 orthodontists, 51 restorative dental specialists or prosthodontists, and 51 laypersons by means of visual analog scales. Data were evaluated using analysis of variance and Tukey post hoc test, with the level of significance set at 5%. Results The most attractive videos for all groups of examiners were those without diastema and with a diastema of 0.5 mm, for both the woman and the man. For a diastema of 1 mm or 1.5 mm, the dentofacial characteristics were considered unesthetic. Conclusions Diastemas equal to or greater than 1 mm negatively influence dentofacial esthetics in a frontal facial evaluation performed by means of video.

EFFECTS OF GINGIVAL MARGIN ASYMMETRIES ON THE SMILE ESTHETIC PERCEPTION OF DENTAL PROFESSIONALS AND LAYPEOPLE IN KHAMMAM

2021 ◽  
pp. 41-42
Author(s):  
S.Anitha Rao ◽  
Kata Rupa ◽  
Kinnera Mounika ◽  
T. Muralidhar
Keyword(s):  
Visual Analog Scale ◽  
Test Results ◽  
Female Volunteer ◽  
Analog Scale ◽  
Gingival Margin ◽  
Dental Professionals

OBJECTIVE: This study aimed to determine the smile esthetic perception of dental professionals and laypeople in Khammam on gingival margin asymmetries. MATERIALS AND METHODS: A frontal close-up smile photograph of a female volunteer was captured and digitally altered in four stages of 0.5mm increments and nal images were assessed by dentists and laypeople. A questionnaire was carried out to evaluate the attractiveness of images by using a visual analog scale. Collected data were analyzed using Mann – Whitney U test. RESULTS: Smiles with 2mm gingival asymmetries were found to be less esthetic. Dentist's scores were signicantly lower than patient scores. CONCLUSION: As the amount of gingival display increased, esthetic scores decreased in both groups.

Failure of Percutaneous Remodeling of the Ligamentum Flavum and Lamina for Neurogenic Claudication

Neurosurgery ◽  
2012 ◽  
Vol 71 (1) ◽  
pp. 86-92 ◽  
Author(s):  
Jeffrey S. Wilkinson ◽  
Daryl R. Fourney
Keyword(s):  
Analysis Of Variance ◽  
Visual Analog Scale ◽  
Oswestry Disability Index ◽  
Ligamentum Flavum ◽  
Short Form ◽  
Visual Analog Scale Score ◽  
Surgical Instruments ◽  
Neurogenic Claudication ◽  
Imaging Studies ◽  
Analog Scale

Abstract BACKGROUND: Percutaneous remodeling of the ligamentum flavum and lamina (PRLL), commercially known as minimally invasive lumbar decompression (mild technique), relies on fluoroscopy and epidural contrast to direct surgical instruments via a 6-mm cannula. OBJECTIVE: To evaluate the safety and efficacy of PRLL and present, to our knowledge, the first reported imaging findings after PRLL. METHODS: We performed a prospective study of PRLL for neurogenic claudication. Primary outcomes were Oswestry Disability Index, Short-Form 12 version 2.0 health survey, and visual analog scale for pain at 26 weeks. Analgesic use was also assessed. Postoperative magnetic resonance imaging was performed at 12 weeks. Long-term failure, defined as the poststudy need for secondary surgery, was assessed up to 18 months. RESULTS: Ten subjects with an average age of 64 years (range, 41–81 years) were treated between September 2008 and January 2009. There were no major adverse events. Mean postoperative visual analog scale score remained significantly reduced throughout 26 weeks (P =.015, analysis of variance). Mean postoperative Oswestry Disability Index was also improved by 1 week and remained significant throughout 26 weeks (P = .024; analysis of variance). However, there was a trend toward increased reliance on narcotic type medications postoperatively. Imaging studies did not show significant decompression of the spinal canal in any patient. In the poststudy period, recurrent claudication requiring laminectomy developed in 6 patients (60%). CONCLUSION: Throughout 26 weeks, pain and disability scores were decreased; however, PRLL did not improve the degree of stenosis on imaging studies. Although PRLL appears to be safe in this small cohort of patients, poststudy outcomes indicate that the failure rate is unacceptably high.

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