Do the smiles of the world's most influential individuals have common parameters?

Abstract

The aim of this study was to determine - on the basis of the most recent yearly listings - whether there were any common measurable variables associated with the smiles of the world's most influential people. A total of 168 subjects were selected from the lists of Time magazine's 100 most influential people during the period 2006-2010. Smiling frontal view photographs were obtained. Thirty-six variables for each subject were traced and measured using photogrammetric analysis to obtain qualitative and quantitative proportions and measurements. Differences with respect to gender, occupation and year of listing were tested to 95% significance, using the Student's t-test and the Kruskal-Wallis test. The chi-squared test was used for qualitative variables. Irrespective of gender or occupation, the similar quantifiable characteristics of the smiles of the most influential subjects were the following: vertical upper lip proportion, smile width, incisor exposure, buccal corridor ratio, smile symmetry index and intra-dental proportions (P > 0·05). Other qualitative standards were as follows: smile symmetry, the buccal corridors and smile arc, direction of occlusal cant and the degree of deviation between maxillary and facial midlines. Differences were found for gingival display and smile height parameters (P = 0·001). The smiles of the world's most influential people revealed common standards, regardless of occupation or gender, which may play a decisive role in the expressions of influential faces.

The role of personality traits in self‐rated oral health and preferences for different types of flawed smiles

“…There are two types of smiles described in the literature, that is posed and spontaneous . The posed smile is a social form of smile, which can be easily repeated . Many investigators have tried to discover the secret of beautiful smiles by assessing objective parameters in a person's natural dentition.…”

“…For decades, photographs have been used to evaluate whether people find different anterior teeth traits aesthetically pleasing (5) and to evaluate the different aesthetic factors in a smile (6) or to determine the prevalence of subjects who show the gingival tissue of their anterior teeth during a natural smile (7). There are two types of smiles described in the literature, that is posed and spontaneous (8). The posed smile is a social form of smile, which can be easily repeated (8).…”

“…There are two types of smiles described in the literature, that is posed and spontaneous (8). The posed smile is a social form of smile, which can be easily repeated (8).…”

Reduction of head and face pain by challenging lateralization and basic emotions: a proposal for future assessment and rehabilitation strategies

“…30 Impeccable and symmetric mimicry is often categorized as attractive, which in turn characterizes the image and therefore the social standing of the person. 31 The frequency and quality of personal relationships are decisive factors of our wellbeing and the quality of life. 15 …”

“…12,30,31,37 This is triggered by pain behavior in chronic facial pain such as changed mimicry 32 or a pain-relieving posture of the affected region. 13 The loss of the basic ability to recognize mimicry-coded basic emotions can lead to misunderstandings, limited empathy, and insecure social behavior.…”