Detecção de lesões cariosas em superficies oclusais : avaliação de diferentes tecnologias

AUTOR(ES)
DATA DE PUBLICAÇÃO

2004

RESUMO

The present thesis, composed by 3 studies, had as general objective to evaluate " in vitro" the efficacy and the reproducibility of different diagnostic methods for carious lesions on occlusal surfaces. The sample of the studies was composed by 96 extracted permanent molars. The objective of the 1st study was to compare the performance of the digital radiographic systems CDR (Schick Technologies, USA) and Sidexis (Sirona, Bensheim, Germany) with the conventional radiographic method for the detection of carious lesions in occlusal surfaces, using the histologic examination as validation method. Two examiners accomplished all the exams. It was concluded, starting from the calculation of the area below curved ROC for the evaluated methods, that there were not statistically significant differences between the performance of the conventional film and the two CCD digital systems for the detection of carious lesions in occlusal surfaces. However, it was found differences between the two last evaluated methods. The objective of the 2nd study was to compare " in vitro " the performance of 5 diagnostic methods, that is, (1) the clinical-visual exam, (2) the conventional radiographic examination, (3) the QLF device (Inspektor Research System BV, Amsterdam, Holland), (4) the ECM device (LODE, Groningen, Holland), and (5) the DIAGNOdent device (Kavo, Biberach, Germany) for the detection of carious lesions in occlusal surfaces. The results demonstrated that the DIAGNOdent device presented higher values of sensibility, specificity, accuracy and area below curved ROC (Az) in relation to the other methods. Therefore, it was concluded that this method can be an important adjunct to visual-radiographic examination when there is doubt in relation to the state of fissures. The objective of the 3rd study was to compare the performance of four diagnostic methods to detect and estimated the depth of the carious lesions in function of the results obtained from stereomicroscopy, transversal microradiograph and confocal laser scanning microscopy exams and to analyze the correlation among them. It was concluded, based on the obtained results that the performance of the diagnostic methods was not influenced by the results of thevalidation methods and all they can be considered trustworthy to evaluate the performance of the diagnosis methods.

ASSUNTO(S)

raio x-equipamentos e acessorios laser diagnostico por imagem caries dentarias

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