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Correlação entre variáveis cefalométricas e o trespasse vertical
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Advisor(s)
Abstract(s)
Objetivo: As más oclusões verticais têm, por vezes, subjacentes alterações esqueléticas. O objetivo deste trabalho é identificar as variáveis cefalométricas com maior potencial preditivo do trespasse vertical.
Materiais e métodos: Foram selecionadas, dos processos da consulta de ortodontia da Clínica Dentária Egas Moniz, 90 telerradiografias laterais e formaram-se 3 grupos de estudo: grupo controlo (n=30) com trespasse vertical normal, grupo de estudo 1 (n=30) com trespasse vertical diminuído e grupo de estudo 2 (n=30) com trespasse vertical aumentado. Com recurso ao programa NemoStudio®, foram realizadas análises cefalométricas e obtidos os valores de 17 variáveis cefalométricas. Os dados foram tratados estatisticamente pelo programa IBM SPSS® Statistics, utilizando os testes de correlação de Spearman, ANOVA e Tukey.
Resultados: A variável cefalométrica “ângulo entre o plano AB e o plano mandibular” apresentou uma correlação muito forte (0,705) com o trespasse vertical. Também as variáveis “altura facial inferior” (CC=-0,578), “arco mandibular” (CC=0,548), “ângulo interincisivo” (CC=0,517), “ângulo goníaco” (CC=-0,565), “ângulo do plano mandibular” (CC=-0,501), “ângulo facial + ângulo do plano mandibular” (CC=-0,669), “ângulo do eixo facial + ângulo do plano mandibular” (CC=-0,541) e “ODI” (CC=0,610) apresentaram uma correlação forte com o trespasse vertical. Apenas o “ângulo entre o plano AB e o plano mandibular”, “ângulo do plano facial + ângulo do plano mandibular”, “ângulo do eixo facial + ângulo do plano mandibular” e “ODI” possibilitaram a diferenciação dos grupos de estudo, através da comparação de médias.
Conclusão: A variável cefalométrica com maior potencial preditivo do trespasse vertical foi o “ângulo entre o plano AB e o plano mandibular” com um coeficiente de correlação muito forte (CC=0,705) e muito significativo (p≤0,01).
Objective: Vertical malocclusions have, sometimes, underlying skeletal changes. The aim of this study is to identify the cephalometric variables with the greatest potential to predict the vertical overlap. Materials and methods: Were selected, from the processes of orthodontic consultation of Dental Clinic Egas Moniz, 90 lateral cephalograms and formed 3 study groups: control group (n=30) with normal vertical overlap, group study 1 (n=30) with decreased vertical overlap and group study 2 (n=30) with increased vertical overlap. Using the NemoStudio® program, cephalometric analyzes were performed and the values of 17 skeletal cephalometric variables were obtained. The data were processed by IBM SPSS® Statistics, using Spearman correlation, ANOVA and Tukey tests. Results: The cephalometric variable “angle between AB plane and mandibular plane” has a very strong correlation (0,705) with the vertical overlap. Also the variables “lower facial height” (CC=-0,578), “mandibular arch” (CC=0,548), “interincisal angle” (CC=0,517), “gonial angle” (CC=-0,565), “mandibular plane angle” (CC=-0,501), “facial angle + mandibular plane angle” (CC=-0,669), “facial axis angle + mandibular plane angle” (CC=-0,541) and “ODI” (CC=0,610) found a strong correlation with the vertical overlap. Only the “angle between AB plane and mandibular plane”, “facial plane angle + mandibular plane angle”, “facial axis angle + mandibular plane angle” and “ODI” allowed the differentiation of the 3 groups, using the comparison of means. Conclusion: The cephalometric variable with highest predictive potential for vertical overlap was “angle between AB plane and mandibular plane”, with a very strong (CC=0,705) and very significant (p≤0,01) correlation coefficient.
Objective: Vertical malocclusions have, sometimes, underlying skeletal changes. The aim of this study is to identify the cephalometric variables with the greatest potential to predict the vertical overlap. Materials and methods: Were selected, from the processes of orthodontic consultation of Dental Clinic Egas Moniz, 90 lateral cephalograms and formed 3 study groups: control group (n=30) with normal vertical overlap, group study 1 (n=30) with decreased vertical overlap and group study 2 (n=30) with increased vertical overlap. Using the NemoStudio® program, cephalometric analyzes were performed and the values of 17 skeletal cephalometric variables were obtained. The data were processed by IBM SPSS® Statistics, using Spearman correlation, ANOVA and Tukey tests. Results: The cephalometric variable “angle between AB plane and mandibular plane” has a very strong correlation (0,705) with the vertical overlap. Also the variables “lower facial height” (CC=-0,578), “mandibular arch” (CC=0,548), “interincisal angle” (CC=0,517), “gonial angle” (CC=-0,565), “mandibular plane angle” (CC=-0,501), “facial angle + mandibular plane angle” (CC=-0,669), “facial axis angle + mandibular plane angle” (CC=-0,541) and “ODI” (CC=0,610) found a strong correlation with the vertical overlap. Only the “angle between AB plane and mandibular plane”, “facial plane angle + mandibular plane angle”, “facial axis angle + mandibular plane angle” and “ODI” allowed the differentiation of the 3 groups, using the comparison of means. Conclusion: The cephalometric variable with highest predictive potential for vertical overlap was “angle between AB plane and mandibular plane”, with a very strong (CC=0,705) and very significant (p≤0,01) correlation coefficient.
Description
Dissertação para obtenção do grau de Mestre no Instituto Universitário Egas Moniz
Keywords
Trespasse vertical Mordida aberta anterior Mordida profunda Análise cefalométrica