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Advisor(s)
Abstract(s)
A má oclusão classe III, embora pouco prevalente, representa um enorme desafio ao nível de abordagem terapêutica e estabilidade pós tratamento.
A mordida aberta encontra-se presente em elevada frequência no período da dentição decídua, contudo, tem tendência a auto-corrigir-se aquando da evolução para a dentição mista. No entanto, quando isto não acontece, também esta revela ser muito difícil de solucionar, sendo que é também muito complicado atingir a estabilidade pós tratamento.
Estas duas más oclusões nunca são tão difíceis de tratar como quando se encontram ambas presentes no mesmo indivíduo, sendo que muitas vezes a única solução acaba por ser cirúrgica.
Para que o Ortodontista consiga fazer um correto diagnóstico e planear a melhor abordagem terapêutica possível, é muito importante que este tenha um conhecimento aprofundado dos processos de desenvolvimento craniofaciais e as suas variações que podem levar ao aparecimento destas más oclusões. É essencial saber distinguir as variações normais entre os indivíduos daquelas que se podem vir a tornar patológicas.
Para saber qual a maneira correta e, caso seja preciso, qual o melhor dispositivo a usar para o tratamento de determinada má oclusão, é necessário determinar e conhecer profundamente o factor etiológico responsável, assim como os padrões de crescimento do indivíduo de modo a tentar manter estáveis os resultados do tratamento.
Nesta dissertação são abordadas as referidas más oclusões supramencionadas, assim como os seus fatores etiológicos, a sua prevalência, as suas características e as várias modalidades de tratamento existentes. Assim como uma breve introdução ao desenvolvimento craniofacial.
Class III malocclusion, although not very prevalent, represents a huge challenge in the treatment approach and post treatment stability. Open bite malocclusion is present at high frequency in the deciduous dentition period, however, it tends to be self-corrected when evolving to the mixed dentition. When this does not occur, it also proves to be very difficult to treat, and it is also very complicated to achieve stability after treatment. These two malocclusions are never as difficult to treat as when they are both present in the same individual, and often the only solution turns out to be surgical. In order for the orthodontist to be able to make a correct diagnosis and plan the best possible therapeutic approach, it is very important that he has a thorough knowledge of the craniofacial development process and its variations that may lead to the emergence of these malocclusions. It is essential to be able to distinguish normal variations between individuals from those that may become pathological. In order to know the correct way and, if necessary, the best appliance to use for the treatment of a certain malocclusion, it is necessary to determine the responsible etiological factor, as well as the patterns of growth of the individual in order to try and maintain the stability of the treatment results. In this dissertation, both malocclusions are discussed, as well as their etiological factors, their prevalence, their characteristics and the various existing treatment modalities. As well as a brief introduction to craniofacial development.
Class III malocclusion, although not very prevalent, represents a huge challenge in the treatment approach and post treatment stability. Open bite malocclusion is present at high frequency in the deciduous dentition period, however, it tends to be self-corrected when evolving to the mixed dentition. When this does not occur, it also proves to be very difficult to treat, and it is also very complicated to achieve stability after treatment. These two malocclusions are never as difficult to treat as when they are both present in the same individual, and often the only solution turns out to be surgical. In order for the orthodontist to be able to make a correct diagnosis and plan the best possible therapeutic approach, it is very important that he has a thorough knowledge of the craniofacial development process and its variations that may lead to the emergence of these malocclusions. It is essential to be able to distinguish normal variations between individuals from those that may become pathological. In order to know the correct way and, if necessary, the best appliance to use for the treatment of a certain malocclusion, it is necessary to determine the responsible etiological factor, as well as the patterns of growth of the individual in order to try and maintain the stability of the treatment results. In this dissertation, both malocclusions are discussed, as well as their etiological factors, their prevalence, their characteristics and the various existing treatment modalities. As well as a brief introduction to craniofacial development.
Description
Dissertação para obtenção do grau de Mestre no Instituto Universitário Egas Moniz
Keywords
Classe III Mordida aberta Etiologia Tratamento