並列タイトル等Semantic Differential 法による歯の露出した笑顔の印象評価
一般注記Dentistry has diversified in response to changes in social environment, especially in terms of aesthetic requirements. These demands have prompted the development of new aesthetic materials and dental treatments, which have begun to see wider application in clinical settings. However, no research has attempted to evaluate dental aesthetics in an objective manner. Although at least one study has examined the concept using an attitude survey, it was questionnaire-based. Previously, our team compared how different groups focus their attention on pictures of the human mouth using an eye-tracking system. We found that both dental patients and non-dental patients (lay persons) fixate their gazes on non-esthetic restorations for a longer time than do dentists. However, our investigations did not extend to determining the specific impressions formed in the viewer’s mind during communication of ‘beautiful’ versus ‘ugly’ teeth. Psychological research has looked at how changes in a person’s facial expressions can modify a viewer’s impressions of them using the Semantic Differential Method (SD). In this technique, the connotative structure of an object of interest is explored by measuring people’s attitudes towards that object in terms of a series of opposite adjective pairs. Facial expressions are an important means of interpersonal communication, with smiling in particular helping facilitate smooth interactions. Smiling people engender more positive impressions in others than unsmiling people. Observer preferences for smiles are reportedly governed by stability in the face’s vertical axis, primarily in the area between the eyes and the mouth. Notably, mouth shape is an important morphological feature that influences a smile’s perceived vitality. We hypothesized that smiles convey the most positive impression if the teeth are exposed; if so, aesthetic dental work can no doubt help to optimize images. This study’s objective was to utilize the SD method to empirically determine how observers’ impressions of smiles are influenced by visible teeth.
2019年度
コレクション（個別）国立国会図書館デジタルコレクション > デジタル化資料 > 博士論文
受理日（W3CDTF）2022-02-06T04:33:19+09:00
連携機関・データベース国立国会図書館 : 国立国会図書館デジタルコレクション