2012
DOI: 10.2319/040112-268.1
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Dynamics of a smile in different age groups

Abstract: Objective: To evaluate smile in different age groups and to detect gender differences in smile. Materials and Methods: Digital videographic records of 241 randomly selected subjects were obtained for smile analysis. The subjects were divided into four groups by age (15-20 years, 21-30 years, 31-40 years, and 41-50 years). Each group was further subdivided by gender. After 41 subjects were excluded, the smile dimensions of 200 subjects were analyzed by two-way multivariate analysis of variance (MANOVA) with Dun… Show more

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Cited by 41 publications
(41 citation statements)
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“…10,11 The digital camcorder (Nikon D7100 DSLR camera with 18-105 mm lens; Nikon, Tokyo, Japan) was stabilized on a tripod stand and placed at the same distance of 3 feet from the participant (this ensured equal magnification for all participants). Two rulers with millimeter markings secured at right angles to each other on a stand were 25 20 a Jarabak ratio ¼ S-Go c /N-Me 3 100 (Go c , constructed gonion).…”
Section: Methodsmentioning
confidence: 99%
“…10,11 The digital camcorder (Nikon D7100 DSLR camera with 18-105 mm lens; Nikon, Tokyo, Japan) was stabilized on a tripod stand and placed at the same distance of 3 feet from the participant (this ensured equal magnification for all participants). Two rulers with millimeter markings secured at right angles to each other on a stand were 25 20 a Jarabak ratio ¼ S-Go c /N-Me 3 100 (Go c , constructed gonion).…”
Section: Methodsmentioning
confidence: 99%
“…[1112] The digital camera (Nikon D7100 DSLR) was set on a tripod stand at a fixed distance from the subject. Subjects were seated on an adjustable stool and instructed to hold the head in natural head position by looking straight into a mirror hung on the wall at eye level.…”
Section: Methodsmentioning
confidence: 99%
“…Aesthetics is a key driver in planning orthodontic treatment [6]. Perceptions of what is attractive may differ between professionals and patients [1,7], because the concept of attractiveness is subjective and influenced by many factors, such as individual preferences, culture [7,8], and sex [9,10].…”
Section: Tablementioning
confidence: 99%