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Master's Dissertation
DOI
https://doi.org/10.11606/D.25.2009.tde-16042009-101007
Document
Author
Full name
Nuria Cabral Castello Branco
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
Bauru, 2009
Supervisor
Committee
Janson, Guilherme dos Reis Pereira (President)
Abrao, Jorge
Freitas, Marcos Roberto de
Title in Portuguese
Atratividade do sorriso nos diferentes protocolos de tratamento da classe II subdivisão
Keywords in Portuguese
atratividade
Classe II subdivisão
sorriso
Abstract in Portuguese
O objetivo deste trabalho foi comparar a atratividade do sorriso entre os diferentes protocolos de tratamento da Classe II subdivisao (extracao de 1, 3 e 4 pre-molares) e verificar a influencia do tamanho do corredor bucal e corredor posterior na estetica do sorriso. A amostra consistiu de fotografias frontais do sorriso posado de 23, 25 e 20 individuos tratados com os protocolos de extracoes de 1, 3 e 4 pre-molares, respectivamente. Em cada fotografia, o corredor bucal e o corredor posterior foram medidos proporcionalmente a largura do sorriso. Por intermedio de um site na internet, as 68 fotografias foram avaliadas quanto a estetica por 46 leigos e 70 ortodontistas, utilizando-se de uma escala de 10 pontos. A atratividade do sorriso entre os 3 protocolos da Classe II subdivisao e os dois grupos de avaliadores foram comparados por meio da Analise de Variancia a dois criterios, enquanto que a influencia da idade e do genero do avaliador na avaliacao da atratividade foi verificada pela Analise de Covariancia. A influencia do tamanho do corredor bucal e do corredor posterior na atratividade do sorriso foi avaliada pelo teste de Correlação de Pearson. Para a comparacao do tamanho dos corredores bucais e corredores posteriores, entre os 3 grupos, foi aplicada a Analise de Variancia. Os resultados demonstraram que nao ha diferenca na atratividade do sorriso entre os pacientes tratados com extracoes de 1, 3 e 4 pre-molares, tanto para leigos quanto para ortodontistas, e o genero e a idade dos avaliadores nao influenciaram a avaliacao da estetica. Os tamanhos dos corredores bucais e dos posteriores nao tiveram correlacao com a atratividade do sorriso. Alem disso, os tamanhos dos corredores bucais e posteriores, entre os grupos, foram estatisticamente semelhantes.
Title in English
Smile attractiveness of Class II subdivision malocclusion treatment protocols
Keywords in English
attractiveness
Class II subdivision malocclusion
smiling
Abstract in English
The objective of this study was to compare smile attractiveness between different treatment protocols of Class II subdivision malocclusion (1, 3 and 4-premolar extraction protocols) and verify the esthetic influence of buccal and posterior corridors on the smile attractiveness. The sample consisted of posed smile photographs obtained from 68 subjects, divided into 3 groups according to the treatment extraction protocol. Group 1, treated with 1 premolar extraction protocol included 20 subjects. Group 2, treated with 4 premolars extraction included 25 subjects. The 23 patients in group 3 were treated with 3 premolars extraction. The buccal and posterior corridors of each picture were measured in proportion to the smile width. To rate the posed smile photographs, panels of 70 orthodontists and 46 laypeople used a 10-point scale. Smile attractiveness and differences between the 3 groups and between the 2 panels of raters were subjected to Two-way ANOVA. To determine the relationship between raters gender and age and the esthetic scores Analysis of Covariance was used. Pearson correlation coefficients were calculated to determine the relationship of buccal and posterior corridors size to the esthetic score. The results showed that there were no significant differences in smile attractivenesss scores between the 3 groups and between orthodontists and laypeople. Also raters gender and age did not influence the esthetic score. The buccal and posterior corridors size did not influence the esthetic score. Besides that, buccal and posterior corridors size did not differ between the groups.
 
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Publishing Date
2009-04-16
 
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