Facial Analysis: Correlation Between Cephalometric Angles and Types of Facial Profile

AbstractThe facial profile is an essential part of facial analysis and significantly impacts surgical decision making. Knowledge of the underlying anatomy, which creates the facial profile, and the anatomic sources of the common abnormalities in the profile can help to ensure adequate surgical correction of the abnormality.

Download Full-text

Facial anthropometric analysis of a healthy group of young Brazilian adults by means of stereophotogrammetry technique

Revista de Odontologia da UNESP ◽

10.1590/1807-2577.19615 ◽

2016 ◽

Vol 45 (3) ◽

pp. 139-145 ◽

Cited By ~ 1

Author(s):

Alvaro Augusto JUNQUEIRA JÚNIOR ◽

Laís Valencise MAGRI ◽

Melissa de Oliveira MELCHIOR ◽

Ana Maria Bettoni RODRIGUES DA SILVA ◽

Marco Antônio Moreira RODRIGUES DA SILVA

Keyword(s):

Soft Tissue ◽

Human Body ◽

Phenotypic Variation ◽

Brazilian Population ◽

The Other ◽

Facial Analysis ◽

Facial Profile ◽

Healthy Group ◽

Image Capturing ◽

High Level

Abstract Introduction: Anthropometry is the science responsible for measuring the weight, size, and proportions of the human body, providing valuable and objective insights into how to characterize phenotypic variation and dysmorphology. Among the newer methods for facial analysis, the stereophotogrammetry technique has shown excellent results given its use of a group of fast cameras that photograph subjects from multiple angles. Objective: The aims of the present study were: (1) to analyze the facial profile of a group of healthy young Brazilian adults, between 18 and 30 years of age, (2) to define common facial values among the subjects, (3) to create a database of facial measurements of a portion of this young healthy Brazilian population to be used in future works, and (4) to test the precision and repeatability of the Vectra M3® equipment. Material and method: Sixty healthy young Brazilian adults participated in the study, 30 males and 30 females. Temporary craniometrical landmarks were performed in soft tissue, and those subjects underwent image capturing by the stereophotogrammetry technique. Thirty landmarks were used to take the measurements (in mm) of 35 distances. The equipment repeatability was tested in 20% of the sample (i.e., 12 subjects). Result: The values between the first and second acquisitions were statistically (p<0.05) similar for all 35 distances analyzed. The findings allowed the creation of a reliable database containing facial distances of a portion of the young healthy Brazilian population. In addition, the distances Tr-N, N-Sn, Ls-Sto, Sto-Li, En[r]-En[l] and Prn-Sn were not statistically different for the group of men (GM) and the group of women (GW), while the other 29 distances were significantly greater in GM. Conclusion: The technique and methods employed in the study yielded objective analyses of the facial profile of this group of healthy young Brazilian adults, and the equipment Vectra M3® showed a high level of precision and repeatability.

Download Full-text

Directional Bias in Human Facial Profile Drawing: A Meta-Analysis

PsycEXTRA Dataset ◽

10.1037/e520602012-459 ◽

2011 ◽

Author(s):

Sumeyra Tosun ◽

Jyotsna Vaid

Keyword(s):

Meta Analysis ◽

Directional Bias ◽

Facial Profile

Download Full-text

Writ Large on Your Face: Observing Emotions Using Automatic Facial Analysis

GfK Marketing Intelligence Review ◽

10.2478/gfkmir-2014-0009 ◽

2014 ◽

Vol 6 (1) ◽

Cited By ~ 1

Author(s):

Anja Dieckmann ◽

Matthias Unfried

Keyword(s):

Facial Analysis

Download Full-text

Accuracy and Reproducibility of Facial Measurements of Digital Photographs and Wrapped Cone Beam Computed Tomography (CBCT) Photographs

Diagnostics ◽

10.3390/diagnostics11050757 ◽

2021 ◽

Vol 11 (5) ◽

pp. 757

Author(s):

Maged Sultan Alhammadi ◽

Abeer Abdulkareem Al-mashraqi ◽

Rayid Hussain Alnami ◽

Nawaf Mohammad Ashqar ◽

Omar Hassan Alamir ◽

...

Keyword(s):

Computed Tomography ◽

Soft Tissue ◽

Cone Beam Computed Tomography ◽

High Reliability ◽

Three Dimensional ◽

Cone Beam ◽

Cross Sectional ◽

Facial Profile ◽

Digital Photographs ◽

Gonial Angle

The study sought to assess whether the soft tissue facial profile measurements of direct Cone Beam Computed Tomography (CBCT) and wrapped CBCT images of non-standardized facial photographs are accurate compared to the standardized digital photographs. In this cross-sectional study, 60 patients with an age range of 18–30 years, who were indicated for CBCT, were enrolled. Two facial photographs were taken per patient: standardized and random (non-standardized). The non-standardized ones were wrapped with the CBCT images. The most used soft tissue facial profile landmarks/parameters (linear and angular) were measured on direct soft tissue three-dimensional (3D) images and on the photographs wrapped over the 3D-CBCT images, and then compared to the standardized photographs. The reliability analysis was performed using concordance correlation coefficients (CCC) and depicted graphically using Bland–Altman plots. Most of the linear and angular measurements showed high reliability (0.91 to 0.998). Nevertheless, four soft tissue measurements were unreliable; namely, posterior gonial angle (0.085 and 0.11 for wrapped and direct CBCT soft tissue, respectively), mandibular plane angle (0.006 and 0.0016 for wrapped and direct CBCT soft tissue, respectively), posterior facial height (0.63 and 0.62 for wrapped and direct CBCT soft tissue, respectively) and total soft tissue facial convexity (0.52 for both wrapped and direct CBCT soft tissue, respectively). The soft tissue facial profile measurements from either the direct 3D-CBCT images or the wrapped CBCT images of non-standardized frontal photographs were accurate, and can be used to analyze most of the soft tissue facial profile measurements.

Download Full-text

Esthetic Considerations in Orthodontics: An Overview

Dental Journal of Advance Studies ◽

10.1055/s-0041-1726473 ◽

2021 ◽

Author(s):

Swati Singh ◽

Litesh Singla ◽

Tanya Anand

Keyword(s):

Soft Tissue ◽

Profile Analysis ◽

Dental Occlusion ◽

Facial Profile ◽

Mandibular Plane ◽

The Face ◽

Facial Proportions ◽

Posterior Position ◽

Anterior Posterior ◽

The Ideal

Abstract Esthetics has been an ever-evolving concept and has gained considerable importance in the field of orthodontics in the last few decades. The re-emergence of the soft tissue paradigm has further catapulted the interest of the orthodontist. So much so that achieving a harmonious profile and an esthetically pleasing smile has become the ideal goal of treatment and is no longer secondary to achieving a functional dental occlusion and/or a rigid adherence to skeletal and dental norms. Esthetics in the orthodontic sense can be divided into three categories: macroesthetics, miniesthetics, and microesthetics. Macroesthetics includes the evaluation of the face and involves frontal assessment and profile analysis. The frontal assessment involves assessment of facial proportions, while the profile analysis involves evaluation of anterior–posterior position of jaws, mandibular plane, and incisor prominence and lip posture. Miniesthetics involves study of the smile framework involving the vertical tooth–lip relationship, smile type, transverse dimensions of smile, smile arc, and midline. Microesthetics involves the assessment of tooth proportions, height-width relationships, connectors and embrasures, gingival contours and heights, and tooth shade and color. The harmony between these factors enables an orthodontist to achieve the idealized esthetic result and hence these parameters deserve due consideration. The importance placed on a pleasing profile cannot be undermined and the orthodontist should aim for a harmonious facial profile over rigid adherence to standard average cephalometric norms. This article aims to give an overview of the macro, mini, and microesthetic considerations in relation to orthodontic diagnosis and treatment planning.

Download Full-text

The face of future: Face expressions during future thinking

Quarterly Journal of Experimental Psychology ◽

10.1177/1747021821992991 ◽

2021 ◽

pp. 174702182199299

Author(s):

Mohamad El Haj ◽

Emin Altintas ◽

Ahmed A Moustafa ◽

Abdel Halim Boudoukha

Keyword(s):

Facial Expression ◽

Facial Expressions ◽

Emotional Experience ◽

Future Scenarios ◽

Future Thinking ◽

Analysis Software ◽

Emotional Facial Expressions ◽

Facial Analysis ◽

The Face ◽

Face Expressions

Future thinking, which is the ability to project oneself forward in time to pre-experience an event, is intimately associated with emotions. We investigated whether emotional future thinking can activate emotional facial expressions. We invited 43 participants to imagine future scenarios, cued by the words “happy,” “sad,” and “city.” Future thinking was video recorded and analysed with a facial analysis software to classify whether facial expressions (i.e., happy, sad, angry, surprised, scared, disgusted, and neutral facial expression) of participants were neutral or emotional. Analysis demonstrated higher levels of happy facial expressions during future thinking cued by the word “happy” than “sad” or “city.” In contrast, higher levels of sad facial expressions were observed during future thinking cued by the word “sad” than “happy” or “city.” Higher levels of neutral facial expressions were observed during future thinking cued by the word “city” than “happy” or “sad.” In the three conditions, the neutral facial expressions were high compared with happy and sad facial expressions. Together, emotional future thinking, at least for future scenarios cued by “happy” and “sad,” seems to trigger the corresponding facial expression. Our study provides an original physiological window into the subjective emotional experience during future thinking.

Download Full-text

Facial Profile Shape, Malocclusion and Palatal Morphology in Malay Obstructive Sleep Apnea Patients

The Angle Orthodontist ◽

10.2319/011509-26.1 ◽

2010 ◽

Vol 80 (1) ◽

pp. 37-42 ◽

Cited By ~ 11

Author(s):

S. M. Banabilh ◽

A. R. Samsudin ◽

A. H. Suzina ◽

Sidek Dinsuhaimi

Keyword(s):

Obstructive Sleep Apnea ◽

Null Hypothesis ◽

Control Group ◽

Class Ii Malocclusion ◽

Chi Square ◽

Facial Profile ◽

Obstructive Sleep ◽

Significant Difference ◽

Chi Square Test ◽

The Mean

Abstract Objective: To test the null hypothesis that there is no difference in facial profile shape, malocclusion class, or palatal morphology in Malay adults with and without obstructive sleep apnea (OSA). Materials and Methods: Subjects were 120 adult Malays aged 18 to 65 years (mean ± standard deviation [SD], 33.2 ± 13.31) divided into two groups of 60. Both groups underwent clinical examination and limited channel polysomnography (PSG). The mean OSA and control values were subjected to t-test and the chi square test. Results: Physical examination showed that 61.7% of the OSA patients were obese, and 41.7% of those obese patients had severe OSA. The mean body mass index (BMI) was significantly greater for the OSA group (33.2 kg/m2 ± 6.5) than for the control group (22.7 kg/m2 ± 3.5; P < .001). The mean neck size and systolic blood pressure were greater for the OSA group (43.6 cm ± 6.02; 129.1 mm Hg ± 17.55) than for the control group (35.6 cm ± 3.52; 114.1 mm Hg ± 13.67; P < .001). Clinical examination showed that the most frequent findings among OSA groups when compared with the control group were convex profiles (71.7%), Class II malocclusion (51.7%), and V palatal shape (53.3%), respectively; the chi square test revealed a significant difference in terms of facial profile and malocclusion class (P < .05), but no significant difference in palatal shape was found. Conclusion: The null hypothesis is rejected. A convex facial profile and Class II malocclusion were significantly more common in the OSA group. The V palatal shape was a frequent finding in the OSA group.

Download Full-text