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Smile Esthetics from Patients’ Perspective for Faces of Varying Attractiveness

Chan, Chang Alexandra

Abstract Details

2011, Master of Science, Ohio State University, Dentistry.
Delivering an attractive smile is a key element to orthodontic patient-satisfaction. Smile characteristics maybe affected by the facial context. Objective: The purpose of this study was to investigate the layperson’s perspective on facial attractiveness and smile esthetic. Methods: Two attractive, average and unattractive model faces (3 males, 3 females) determined by peer ratings, were combined with ten smiles variables (buccal corridor, smile arc, maxillary gingival discrepancy, gingival display, central incisor incisal edge discrepancy, cant, overbite, central incisor gingival margin discrepancy, maxillary midline to face and mandibular midline to maxillary midline). Each smile characteristic was altered digitally and presented using emoticon slider technology to allow a continuous range of choices. Raters chose the ideal, and limits of acceptability. Variables were divided into six separate surveys (four surveys with two variables and two surveys with one variable) and rated 96 times. Power analysis (non-directional alpha of 0.05, standard deviation of 3.5 and power of 0.86) required 576 raters. Reliability was accessed by answering each question twice. Results: Individual smile variable reliability ranged from fair to excellent, except buccal corridor. Clinically significant values were defined as greater than 1.0mm with statistical significance (p<0.05). Rater gender did not make a difference. Clinical significance was found for buccal corridor, smile arc, gingival display and upper midline to face. For females, smaller buccal corridors and flatter smile arcs were preferred for the unattractive and attractive models compared to the average model. The opposite was found for male models. More gingival display was preferred for the unattractive and attractive male and female models compared to the average models. Unattractive models had a smaller acceptable range compared to the other groups for gingival display. Attractive models were allowed less midline deviation. Conclusion: Reliability was relatively fair to excellent except for buccal corridor. It appears that facial attractiveness did not have an effect on the smile characters that were considered micro-esthetic. Facial attractiveness did affect smile characteristics were measured relative to the face. Understanding these limitations is important in the diagnosis and treatment planning.
Henry Fields, Jr (Committee Chair)
Michael F. Beck (Committee Member)
Allen Firestone (Committee Member)
Stephen Rosenstiel (Committee Member)
103 p.

Recommended Citations

Citations

  • Chan, C. A. (2011). Smile Esthetics from Patients’ Perspective for Faces of Varying Attractiveness [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1294429476

    APA Style (7th edition)

  • Chan, Chang. Smile Esthetics from Patients’ Perspective for Faces of Varying Attractiveness. 2011. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1294429476.

    MLA Style (8th edition)

  • Chan, Chang. "Smile Esthetics from Patients’ Perspective for Faces of Varying Attractiveness." Master's thesis, Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1294429476

    Chicago Manual of Style (17th edition)