The ability of orthodontists and laypeople in the perception of gradual reduction of dentogingival exposure while smiling

Abstract

OBJECTIVE: To assess differences in how orthodontists and laypersons perceive a reduction in dentogingival display on smiling. METHODS: Sixty examiners from both genders (30 laypersons and 30 orthodontists) evaluated photographs of spontaneous smiles of two subjects , one male and one female. Based on the original images, smile height was modified by means of an image manipulation software program. The examiners assigned scores ranging from 0 to 10, according to the level of pleasantness. Method reproducibility was examined using the Wilcoxon test, while the Friedman and Wilcoxon tests (p < 0.05) were employed to observe intra- and interexaminer differences, respectively. RESULTS: No differences were found between the groups of examiners - in terms of esthetics - in response to changes in smile height of both genders . However,men smile had lower acceptability than the women smile. A mild reduction in dentogingival display on smiling (2 mm) was not perceived by either laypersons or orthodontists (p > 0.05). CONCLUSIONS: women smiles achieved higher scores than men smiles however, samples involving a larger number of subjects in each group are required to ensure whether or not this finding is linked to the subjects gender.<br>OBJETIVO: avaliar a diferença na percepção de ortodontistas e leigos quanto à redução da exposição dentogengival no sorriso. MÉTODOS: no total, 60 avaliadores de ambos os sexos (30 leigos e 30 ortodontistas) avaliaram fotografias do sorriso espontâneo de dois indivíduos, um do sexo masculino e um do feminino. A partir das imagens originais, a altura do sorriso foi modificada usando-se um programa de manipulação de imagens. Os examinadores emitiram notas de 0 a 10, conforme o nível de agradabilidade. A reprodutibilidade do método foi examinada através do teste de Wilcoxon, enquanto os testes de Friedman e Wilcoxon (P<0,05) foram utilizados para observar as diferenças intra e interexaminadores, respectivamente. RESULTADOS: os resultados demonstraram não haver diferença entre os grupos de avaliadores com relação à estética quando a altura de ambos os sorrisos foi modificada. Entretanto, o sorriso do indivíduo do sexo masculino teve menor aceitabilidade do que o sorriso feminino. Uma suave redução na exposição dentogengival no sorriso (2mm) não foi percebida por leigos ou ortodontistas (p>0,05). CONCLUSÃO: o sorriso do indivíduo do sexo feminino recebeu notas mais altas do que o do masculino; entretanto, amostras envolvendo um maior número de indivíduos em cada grupo são necessárias para confirmar se a observação estaria relacionada ao sexo do indivíduo examinado

Morphological features of smile attractiveness and related factors influence perception and gingival aesthetic parameters

“…In other words, laypersons with high aesthetic demands knew the flaws in their smile and consulted specialists to achieve the desired aesthetics. Some previous studies used intentionally altered photographs of various smile features of model images, 4 , 26 but this method created unnatural and artificial smile photos that negatively impacted the study outcomes. 1 A previous study with a relatively large population suggested that laypersons had a wider range of acceptance of perception than professionals.…”

Smile Aesthetics Acuity of Lay-persons verses Dental Professionals

“…Parekh et al 14 and Kokich et al 8 assessed variations and described dental aesthetics. Barros et al 15 evaluated the gingival and tooth show when smiling and measured the variation and difference in opinion of lay-person and professionals in context with attractive smile aesthetics. No significant difference was found which is similar to our study.…”

“…Few studies also reported that papilla must be visible in ideally attractive and beautiful smile. 12,14,15 Few studies also showed that, smiles can be digitally modified but this may lead to artificial smile and change the results. 15,[17][18][19][20]…”

“…12,14,15 Few studies also showed that, smiles can be digitally modified but this may lead to artificial smile and change the results. 15,[17][18][19][20]…”