Effects of Vertical Positions of Anterior Teeth on Smile Esthetics in <scp>J</scp>apanese and <scp>K</scp>orean Orthodontists and Orthodontic Patients

Ioi, Hideki; Kang, Sang-Wook; Shimomura, Takahiro; Kim, Seong-Sik; Park, Soo Byung; Son, Woo Sung; Takahashi, Ichiro

doi:10.1111/jerd.12032

Cited by 26 publications

(18 citation statements)

References 19 publications

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“…Excessive tooth exposure may thus reveal what they would rather conceal. These findings for the younger group are inconsistent with those of Ioi et al [5] who reported that young laypeople preferred a smile with tooth coverage by the upper lip. These findings might be related to ethnic and social differences in smile preference.…”

Section: Discussioncontrasting

confidence: 99%

“…The patients’ personal experience and social environment affect their preference towards smile esthetics more highly than the dentists’ or orthodontists’ opinion does [3]. In addition, an individual’s esthetic evaluation is considerably impacted by factors such as education level, social status, and cultural differences [3–5]. Mass media, including television, radio, advertising, movies, magazines, and the internet, also play an important role in the perception of beauty in modern culture [6].…”

Section: Introductionmentioning

confidence: 99%

“…Mass media, including television, radio, advertising, movies, magazines, and the internet, also play an important role in the perception of beauty in modern culture [6]. The definition of dental beauty differs across populations, regions, countries, and even continents [5, 7]. Dental beauty is also dynamic, with its parameters changing over time [8].…”

Section: Introductionmentioning

confidence: 99%

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Perception of smile esthetics by laypeople of different ages

Sriphadungporn

Chamnannidiadha

2017

Prog Orthod.

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BackgroundAge is a factor affecting smile esthetics. Three variables of smile esthetics associated with the maxillary anterior teeth and age-related changes have recently received considerable attention: (i) the incisal edge position of the maxillary central incisors, (ii) the maxillary gingival display, and (iii) the presence of a black triangle between the maxillary central incisors. The aim of this study was to evaluate the influence of age on smile esthetic perception based on these three variables in a group of Thai laypeople.MethodsThe smiles were constructed from a photograph of a female smile. Smile photographs were altered in various increments using three variables: the incisal edge position of the maxillary incisors, gingival display, and a black triangle between the maxillary central incisors. The photographs were shown to a group of 240 Thai laypeople. The subjects were divided into two groups: a younger group, 15–29 years old (n = 120) and an older group, 36–52 years old (n = 120). Each subject was asked to score the attractiveness of each smile separately using a visual analog scale.ResultsSmile attractiveness scores concerning the incisal edge positions of the maxillary central incisors were similar between the two groups. However, upper lip coverage was rated as unattractive by the younger group. A gingival display of 0 and 2 mm was rated as most attractive by the younger group. Upper lip coverage and gingival display of 0 and 2 mm were considered attractive by the older group. Excessive gingival display (6 mm) was scored as unattractive by both groups. A black triangle ranging from 1 to 2.5 mm between the maxillary central incisors was scored differently between the two groups. The older group was more tolerant of the black triangle size.ConclusionsAge impacts smile perception based on maxillary gingival display and the presence of a black triangle between the maxillary central incisors, but not of the incisal edge position of the maxillary central incisors. Due to the variation in esthetic perception of each individual, participation between orthodontists and patients for decision-making and treatment planning is a crucial process to provide successful results.

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Section: Discussioncontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Perception of smile esthetics by laypeople of different ages

Sriphadungporn

Chamnannidiadha

2017

Prog Orthod.

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“…Hideki Ioi et al demonstrated the effect of vertical positions of anterior teeth on smile esthetics in South Korea and Japan [7]. Therefore, the anterior maxillary teeth form considered as one of the most substantial aspects of smile esthetics; it is in line with the study conducted by Ong et al which indicated that the anterior teeth form has the highest impact on the smile attractiveness [8].…”

Section: Introductionsupporting

confidence: 79%

The Effect of Anterior Teeth Forms in Smile Esthetics

Jafari¹,

Bagheri²,

Hekmatfar³

et al. 2017

J Interdiscipl Med Dent Sci

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“…The lips are predictably changed over time, with length increase and volume decrease, and a consequent reduction in upper-incisor exposure when smiling [2,5].…”

Section: Introductionmentioning

confidence: 98%