43190_ google corrections done final.doc - The Perception of Asymmetries in Occlusal Plane in the Frontal View among Laypeople An EyeTracking Study Lara

43190_ google corrections done final.doc - The Perception...

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The Perception of Asymmetries in Occlusal Plane in the Frontal View among Laypeople: An Eye- Tracking Study Lara Karolina Guimarães1, Paulo Henrique Bueno2, Pedro Emanoel Oliveira3, Caio Seiti Miyoshi4, Oscar Mario Antelo5, Orlando Motohiro Tanaka6 Abstract Introduction: Eye-tracking studies have explored the need for orthodontic treatment and treatment outcomes from a lay perspective as a newer diagnostic tool versus traditional assessments based on static photographs. Aim: To evaluate the visual esthetic perceptions of laypeople with regard to occlusal plane cant in a frontal smile analysis. Material and Methods : Images of smiling male and female faceshad occlusal plane cant added with Photoshop CCon the magnitudes of 0°, 2°, and 2.5° to the left side on the female face and the male to the right side. To obtain eye tracking data, two software programs, OGAMA and The Eye Tribe Tracker®, were used together. Thirty ( 30) male and 30 female laypeople raters were selected from the student population of a university and consisted of undergraduate students, and not those of dentistry, to visualise ocular movement in the Areas Of Interest (AOI). A One-Way Analysis Of Variance (ANOVA) was applied to compare one of the independent variables with the dependent variable. Results : Eye-tracking showed that the laypeople identified a triangle shape between the right eye, left eye, and mouth with greater fixation of the eyes. There were statistically significant differences according to the number of fixations at the mouth and menton. Conclusion : Laypeople were not able to perceive the occlusal plane cant located on the right side of the male face or to the left on the female face. However it is important do take the laypeople perspective into consideration when making treatment alternatives. KEYWORDS: Occlusal cant, eye-tracking, frontal smile, asymmetry INTRODUCTION Smile arrangement and composition are crucial components in orthodontics. Perception of beauty are subjective, which makes it difficult to achieve solid goals to guide during orthodontic treatment[1].Perception of beauty vary from person to person and may be influenced by gender, personal experience, and social environment[2]. An attractive smile is a requirement to win elections, and advertising uses beautiful smiles to subliminally suggest “look better, feel younger”[3]. The esthetic acceptability thresholds for esthetic facial and dental problems should be well defined[4]. The perceptions of laypeople in relation to smile esthetics are important to better understand treatment goals from the point of view of the patient. The characteristics of the smile should be highly assessed during orthodontic treatment planning [5]. People are influenced by what they see on television, the internet, and social networks, and not meeting the standards of beauty can affect confidence and self-esteem. Alhammadi MS et al., found beauty is a key motivational reason for patients seeking dental and orthodontic treatment as they mainly seek an

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