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Avaliação da precisão e confiabilidade de scanners digitais na deteção e determinação dos pontos de contacto em intercuspidação máxima
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Advisor(s)
Abstract(s)
Objetivo: Avaliar clinicamente a precisão e a confiabilidade de diferentes scanners digitais intraorais na capacidade de deteção e determinação dos contactos oclusais máximos em intercuspidação máxima.
Materiais e Métodos: Foram utilizados três scanners distintos para realizar a digitalização da relação intermaxilar em intercuspidação máxima, de uma amostra de dez alunos do Mestrado Integrado em Medicina Dentária (MIMD) da Egas Moniz School of Health and Science. No registo oclusal obtido foi realizada a contagem do número de pontos de contacto após calibração da escala para distâncias inferiores a 100 μm e a área dos pontos de contacto máximos foi calculada utilizando o software Netfabb®, por meio da interseção booleana dos modelos digitalizados. Na análise estatística calculou-se o Coeficiente de Correlação Intraclasse e o Coeficiente de Correlação de Spearman, adotando um nível de significância de 5% (p ≤ 0.05).
Resultados: Na contagem do número de pontos de contacto em intercuspidação máxima, registou-se o maior nível de correlação entre o TRIOS® e o iTero™, sendo este um valor de correlação moderado (r=0.694, p=0.026). Na deteção da área desses pontos, o único valor significativo de correlação obtido foi entre o TRIOS® e o iTero™ (r=0.721, p=0.019). O scanner em que se detetou o maior nível de correlação entre as áreas e o número de pontos de contacto, foi no CEREC®, com um Coeficiente de Correlação de Spearman (r=0.709 e p=0.022) moderado a elevado e significativo.
Conclusões: Apesar de existir alguma similaridade na identificação dos pontos de contacto entre alguns dos scanners avaliados, existe alguma variabilidade e subjetividade na interpretação desses resultados, evidenciando a necessidade de investigar os fatores que causam estas discrepâncias e desenvolver protocolos padronizados que aumentem a sua confiabilidade.
Aim: To clinically assess the accuracy and reliability of different digital intraoral scanners in their ability to detect and determine maximum occlusal contacts in maximum intercuspation. Materials and Methods: Three different scanners were used to digitalise the intermaxillary relationship in maximum intercuspation of a sample of ten students from the Integrated Master's Degree in Dental Medicine (MIMD) at the Egas Moniz School of Health and Science. The number of contact points was counted on the occlusal record obtained after calibrating the scale for distances of less than 100 μm and the area of the maximum contact points was calculated using the Netfabb® software by means of boolean intersection of the digitalised models. In the statistical analysis, the Intraclass Correlation Coefficient and Spearman's Correlation Coefficient were calculated, adopting a significance level of 5% (p ≤ 0.05). Results: When counting the number of contact points at maximum intercuspation, the highest level of correlation was found between TRIOS® and iTero™, which is a moderate value of correlation (r=0.694, p=0.026). In the detection of the area of these points, the only significant correlation value obtained was between TRIOS® and iTero™ (r=0.721, p=0.019). The scanner with the highest level of correlation between the areas and the number of contact points was found in CEREC®, with a moderate to high and significant Spearman Correlation Coefficient (r=0.709 and p=0.022). Conclusions: Although there is some similarity in the identification of contact points between some of the scanners evaluated, there is some variability and subjectivity in the interpretation of these results, highlighting the need to investigate the factors that cause these discrepancies and to develop standardised protocols that increase their reliability.
Aim: To clinically assess the accuracy and reliability of different digital intraoral scanners in their ability to detect and determine maximum occlusal contacts in maximum intercuspation. Materials and Methods: Three different scanners were used to digitalise the intermaxillary relationship in maximum intercuspation of a sample of ten students from the Integrated Master's Degree in Dental Medicine (MIMD) at the Egas Moniz School of Health and Science. The number of contact points was counted on the occlusal record obtained after calibrating the scale for distances of less than 100 μm and the area of the maximum contact points was calculated using the Netfabb® software by means of boolean intersection of the digitalised models. In the statistical analysis, the Intraclass Correlation Coefficient and Spearman's Correlation Coefficient were calculated, adopting a significance level of 5% (p ≤ 0.05). Results: When counting the number of contact points at maximum intercuspation, the highest level of correlation was found between TRIOS® and iTero™, which is a moderate value of correlation (r=0.694, p=0.026). In the detection of the area of these points, the only significant correlation value obtained was between TRIOS® and iTero™ (r=0.721, p=0.019). The scanner with the highest level of correlation between the areas and the number of contact points was found in CEREC®, with a moderate to high and significant Spearman Correlation Coefficient (r=0.709 and p=0.022). Conclusions: Although there is some similarity in the identification of contact points between some of the scanners evaluated, there is some variability and subjectivity in the interpretation of these results, highlighting the need to investigate the factors that cause these discrepancies and to develop standardised protocols that increase their reliability.
Description
Dissertação para obtenção do grau de Mestre no Instituto Universitário Egas Moniz
Keywords
Fluxo digital Scanner intraoral Contactos oclusais Intercuspidação máxima