Abstract
Objective: To evaluate the esthetic perception of the smile according to the variation of the vertical position and the angulation of the upper central incisor (UPI) by dental students (DS) and common people (CP) of three regions of Peru. Materials and Methods: Descriptive cross-sectional design. The sample was 462 adults, divided into 77 for each subgroup of DS and CP of the Lima (Coast), Junín (Highlands) and Loreto (Rainforest) regions. Using the Photoshop® software, a photograph of a woman's smile was modified by varying the vertical position and angulation of the UPI, obtaining images that were evaluated using the analog visual scale. Results: The CP rated better than DS in most categories (p <0.001). The smile best valued by DS in a vertical position was 1mm and 2mm; and for angulation 0°, while for CP 1mm and 0° respectively (p <0.05). Comparing by regions, the DS of Lima gave the lowest rating for 0 ° with 52.63 and those of Junín the highest for 4° with 45.90. The PC of Loreto registered the lowest score for the vertical position categories (p <0.001), while for angulation in Junín it was rated with a lower score than in Loreto for -6 ° and 0 °; and for 4° Lima provided the lowest rating (p <0.001). Conclusions: The esthetic perception of the smile is affected by the variation of vertical position and angulation of the ICS in common people and dental students in the three regions of Peru.
References
Al Taki A., Khalesi M., Shagmani M., Yahia I., Kaddah F. A. Perceptions of altered smile esthetics: a comparative evaluation in orthodontists, dentists, and laypersons. Int J Dent. [Internet].2016 [acceso 8 de Octubre 2018]; 2016: 1-11. Disponible en: http://dx.doi.org/10.1155/2016/7815274
Alhammadi M. S., Halboub E., Al-Mashraqi A. A., Al-Homoud M., Wafi S., Zakari A., Mashali W. Perception of facial, dental, and smile esthetics by dental students. J Esthet Restor Dent. 2018; 30 (5): 415-426.
An S. M., Choi S. Y., Chung Y. W., Jang T. H., Kang K. H. Comparing esthetic smile perceptions among laypersons with and without orthodontic treatment experience and dentists. Korean J Orthod. 2014; 44 (6): 294-303.
Öz A. A., Akdeniz B. S., Canlı E., Çelik S. Smile Attractiveness: Differences among the Perceptions of Dental professionals and Laypersons. Turk J Orthod. 2017; 30 (2): 50-55.
Correa B. D., Bittencourt M. A. V., Machado AW. Influence of maxillary canine gingival margin asymmetries on the perception of smile esthetics among orthodontists and laypersons. Am J Orthod Dentofacial Orthop. 2014; 145 (1): 55-63.
Peck S., Peck L. Selected aspects of the art and science of facial esthetics. Semin Orthod. 1995; 1 (2): 105-26.
Machado A.W. 10 commandments of smile esthetics. Dental Press J Orthod. 2014; 19 (4): 136-57.
Machado A. W., McComb R. W., Moon W., Gandini L. G. Jr. Influence of the vertical position of maxillary central incisors on the perception of smile esthetics among orthodontists and laypersons. J Esthet Restor Dent 2013; 25 (6): 392-401.
Betrine Ribeiro J., Figuereido B. A., Machado A.W. Does the presence of unilateral maxillary incisor edge asymmetries influence the perception of smile esthetics? J Esthet Restor Dent. 2017; 29 (4): 291-297.
Cheng H. C., Cheng P. C. Factors affecting smile esthetics in adults with different types of anterior overjet malocclusion. Korean J Orthod. 2017; 47 (1): 31-38.
Sriphadungporn C., Chamnannidiadha N. Perception of smile esthetics by laypeople of different ages. Progress in Orthodontics. 2017; 18 (1): 8.
Ayyildiz E., Tan E., Keklik H., Celebi A. A., Pithon M. M. Evaluation of black spaces between maxillary central incisors by dentistry students and laypeople. J Oral Sci. 2017; 59 (3): 323-28.
Ioi H., Kang S., Shimomura T., Kim S. S., Park S. B., Son W. S., et al. Effects of vertical positions of anterior teeth on smile esthetics in Japanese and Korean orthodontists and orthodontic patients. J Esthet Restor Dent. 2013; 25 (4): 274-82.
Dindaroğlu F., Özmutlu M. K., Işıksal E. The effect of educational status on the perception of social and spontaneous smiles. Turk J Orthod 2016; 29 (1): 10-5.
Russello S. The impact of media exposure on self-esteem and body satisfaction in men and women. J Interdisciplinary Undergrad Res. 2013; 1 (1): 1-12.
Parrini S., Rossini G., Castroflorio T., Fortini A., Deregibus A., Debemardi C. Laypeople’s perceptions of frontal smile esthetics: A systematic review. Am J Orthod Dentofacial Orthop. 2016; 150 (5): 740-750.
Nanda R. Estética y Biomecánica en Ortodoncia. 2da ed. Venezuela: Amolca Actualizaciones médicas, 2017.
Mokhtar H. A., Abuljadayel L. W., Al-Ali R. M., Yousef M. The perception of smile attractiveness among Saudi population. Clin Cosmet Investig Dent. 2015; 20 (7): 17-23.
Pitts T. R. Bracket Positioning for Smile Arc Protection. J Clinic Orthod. 2017; 51 (3), 142-56.
Cabral Menezes E. B., Viera Bittencourt M. A., Machado A.W. ¿Do different vertical positions of maxillary central incisors influence smile esthetics perception? Dental Press J Orthod. 2017; 22 (2): 95-105.
Simões D., Meyge de Brito G., Teixeira Cangussu M. C., Machado A. W. Does the vertical position of maxillary central incisors in men influence smile esthetics perception? Am J Orthod Dentofacial Orthop. 2019; 156 (4): 485-492.
Machado R. M., Assad Duarte M. E., Jardim da Motta A. F., Mucha J. N., Motta A. T. Variations between maxillary central and lateral incisal edges and smile attractiveness. Am J. Orthod Dentofacial Orthop. 2016; 150 (3): 425-35.
Yang S., Guo Y., Yang X., Zhan F., Wang J., Qiu J., Li J. Effect of mesiodistal angulation of the maxillary central incisors on esthetic perception of the smile in the frontal view. Am J Orthod Dentofacial Orthop 2015; 148 (3): 396-404.
Rayyan M. R. Effect of the interproximal contact level on the perception of smile esthetics. Dent Med Probl. 2019; 56 (3): 251-255.
De Almeida-Pedrin R. R., Pinzan A., de Almeida R. R., Ursi W., de Almeida M. R. Panoramic evaluation of mesiodistal axial inclinations of maxillary anterior teeth in orthodontically treated subjects. Am J Orthod Dentofacial Orthop 2006; 130 (1): 56-60.
Bass N. M. Measurement of the profile angle and the esthetic analysis of the facial profile. J Orthod 2003; 30 (1): 3-9.
Adams M., Andrews W., Tremont T., Martin C., Razmus T., Gunel E., Ngan P. Anteroposterior relationship of the maxillary central incisors to the forehead in adult white males. Orthodontics (Chic.). 2013; 14 (1): 2-9.
Malquichagua-Veramendi C., Liñán-Durán C., Ríos-Villasis K. Percepción estética de la sonrisa con respecto a la inclinación del incisivo central superior. Rev. Estomatol. Herediana. 2014; 24 (3): 155-162.
Almutairi T. K., Albarakati S. F., Aldrees A. M. Influence of bimaxillary protrusión on the perception of smile esthetics. Saudi Med J. 2015; 36 (1): 87-93.
Howells D. J., Shaw W. C. The validity and reliability of ratings of dental and facial attractiveness for epidemiologic use. Am J Orthod. 1985; 88 (5): 402-8.
Kaya B., Uyar R. Influence on smile attractiveness of the smile arc in conjunction with gingival display. Am J Orthod Dentofacial Orthop. 2013; 144 (4): 541-7.
Laceda-Santos R., Pereira T. B., Pithon M. M. Esthetic perception of the buccal corridor in different in different facial types by laypersons of different ages. Biosci J. 2015; 31 (4): 1283-90.
Ousehal L., Aghoutan H., Chemlali S., Anssari I. F., Talic N. Perception of altered smile esthetics among Moroccan professionals and lay people. Saudi Dental Journal. 2016; 28 (4): 174-182.
King K. L., Evans C. A., Viana G., Begoles E., Obrez A. Preferences for vertical position of the maxillary lateral incisors. World J Orthod. 2008; Summer: 9 (2): 147-54.