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Master's Dissertation
DOI
10.11606/D.25.2009.tde-01042009-131113
Document
Author
Full name
Luiz Eduardo Alessio Junior
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
Bauru, 2009
Supervisor
Committee
Almeida, Renato Rodrigues de (President)
Fuziy, Acácio
Henriques, Jose Fernando Castanha
Title in Portuguese
Avaliação longitudinal da estabilidade do tratamento da má oclusão de Classe II com o aparelho Pendulum seguido do aparelho fixo
Keywords in Portuguese
aparelho pendulum
distalização molar
estabilidade
má oclusão classe II de Angle
Abstract in Portuguese
Compulsando a literatura nota-se uma diversidade de formas de tratamento, apoiadas em diferentes mecanismos terapêuticos, para a correção da má oclusão de Classe II. No entanto, poucos trabalhos estudam a estabilidade da correção com o aparelho Pendulum. Sendo assim, o objetivo deste estudo foi verificar a estabilidade do tratamento da Classe II em longo prazo (5 anos) com o aparelho Pendulum, seguido pelo aparelho fixo. A amostra consistiu de 20 pacientes (14 do gênero feminino e 6 do masculino). A média da idade, ao inicio do tratamento (T1), foi de 14,02 ± 1,62 anos, ao final do tratamento (T2), 18,38 ± 1,84 anos, e no pós-tratamento (T3), 22,94 ± 1,34 anos. Para a análise, foram utilizados traçados cefalométricos e modelos de estudo nas 3 fases. As variáveis nos 3 grupos, foram comparadas pela análise de variância a um critério ANOVA, considerando significativo o valor de P < 0,05. Os resultados mostraram uma grande estabilidade das variáveis cefalométricas, sendo estatisticamente diferentes somente a inclinação do primeiro molar e a posição ântero-posterior do lábio superior. A avaliação do índice PAR demonstrou que o tratamento com o aparelho Pendulum seguido pelo aparelho fixo, foi estável 5 anos pós-tratamento. Conclui-se que o tratamento da Classe II com o aparelho Pendulum e o aparelho fixo, foi estável em longo prazo.
Title in English
Longitudinal evaluation of treatment stability for class II malocclusion with a pendulum appliance followed by a fixed one
Keywords in English
Angle´s class II malocclusion
molar distalization.
pendulum appliance
stability
Abstract in English
There are, in the literature, several forms of treatment, supported by different therapeutic mechanisms for the correction of Class II malocclusion. However, a few works have studied the stability of Class II correction with the Pendulum appliance. Therefore, this study aimed at verifying the long-term stability (5 years) of a treatment with the Pendulum appliance followed by a fixed one. The sample consisted of 20 patients (14 females and 6 males). The average age at the beginning of the treatment (T1) was 14,02 ± 1,62 yrs, and at the end of the treatment (T2), 18,38 ± 1,84 yrs, and at the post-treatment (T3), 22,94 ± 1,34 yrs. Cephalometric measurements and cast models were used in the 3 phases and the variables for the 3 groups were compared by ANOVA variance analysis, by considering P<0,05, a significant value. The results show a great stability of the cephalometric variables, being statistically different, only the tipping of the 1st molar and the upper lip thickness. The PAR index assessment demonstrated that the treatment with the pendulum appliance, followed by a fixed one, was stable, 5 yrs post-treatment. It was concluded that the Class II treatment with the Pendulum appliance, followed by a fixed one, was more stable in the long term.
 
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Publishing Date
2009-04-02
 
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