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Advisor(s)
Abstract(s)
As mordidas cruzadas posteriores são das más oclusões mais prevalentes na
dentição primária e mista. Estas manifestam-se mais frequentemente de forma
unilateral. Apesar disso, aquando da manipulação da mandíbula, em relação cêntrica
observa-se que em grande parte das situações existe um comprometimento bilateral.
Dessa forma, o conhecimento das características patognomónicas destes tipos de más
oclusões é essencial de forma a se obter um diagnóstico preciso que distinga
eficazmente se a afeção é unilateral ou bilateral.
Um diagnostico precoce e um plano de tratamento adequado mostra-se de especial
importância neste tipo de más oclusões dado que uma intervenção precoce, com a
correção de fatores etiológicos e/ou intervenção ativa, pode travar a evolução,
melhorar o prognostico ou até mesmo corrigi-la definitivamente. Está também
descrito que maxilas desadequadamente estreitas reduzem o espaço para a correta
erupção dentária. Além disso, a atividade dos músculos temporal e masséter estão
alteradas o que faz com que pacientes com este tipo de patologia sejam mais
suscetiveis de desenvolver desordens cranio-mandibulares
Nesta dissertação é abordado o diagnostico diferencial e hipóteses de tratamento.
É também mostrado um caso clinico de mordida cruzada unilateral tratada com
aparatologia removível e um estudo transversal de prevalência de mordidas cruzadas
em crianças do agrupamento de escolas de Mundão, Viseu, Portugal.
The posterior crossbites are some of the most prevailing malocclusions in primary and mixed dentition. These are more frequently seen in unilateral form. Besides that, when the mandible is manipulated we observe that in most of the situations exists a bilateral compromising. Thereby the knowledge of the pathognomonic features of these types of malocclusions is essential in order to obtain an accurate diagnosis that effectively distinguishes if the affection is unilateral or bilateral. An early diagnosis and an appropriate treatment plan proves to be of special importance in this type of malocclusion since early intervention, with the correction of etiologic factors, and/or active intervention can halt the progress, improve the prognosis or even correct it definitely. It’s also described that inadequately narrow jaws reduce the space for proper tooth eruption. Furthermore, the activity of the masseter and temporalis muscles is altered which means that patients with this type of pathology are more likely to develop craniomandibular disorders. In this dissertation are addressed diagnoses, treatment hypotheses and differentiation between them. It’s also shown a clinical case of unilateral crossbite treated with removable appliances and a cross-sectional study of prevalence of crossbites in children attending the school cluster of Mundão, Viseu, Portugal.
The posterior crossbites are some of the most prevailing malocclusions in primary and mixed dentition. These are more frequently seen in unilateral form. Besides that, when the mandible is manipulated we observe that in most of the situations exists a bilateral compromising. Thereby the knowledge of the pathognomonic features of these types of malocclusions is essential in order to obtain an accurate diagnosis that effectively distinguishes if the affection is unilateral or bilateral. An early diagnosis and an appropriate treatment plan proves to be of special importance in this type of malocclusion since early intervention, with the correction of etiologic factors, and/or active intervention can halt the progress, improve the prognosis or even correct it definitely. It’s also described that inadequately narrow jaws reduce the space for proper tooth eruption. Furthermore, the activity of the masseter and temporalis muscles is altered which means that patients with this type of pathology are more likely to develop craniomandibular disorders. In this dissertation are addressed diagnoses, treatment hypotheses and differentiation between them. It’s also shown a clinical case of unilateral crossbite treated with removable appliances and a cross-sectional study of prevalence of crossbites in children attending the school cluster of Mundão, Viseu, Portugal.
Description
Keywords
Mordida cruzada posterior Mordida cruzada posterior unilateral Tratamento de mordidas cruzadas posteriores com aparatologia removível Posterior crossbite Unilateral posterior crossbite Treatment of posterior crossbites with removable appliances