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Objetivo: viabilizar a utilizacao de dentes deciduos artificiais com polpa e condutos radiculares em pesquisas oin vitroo com o uso do localizador apical Root ZX II. Metodo: foram selecionados 20 molares deciduos artificiais que apresentavam tres condutos radiculares e nao apresentavam trincas, fraturas ou defeitos de fabricacao. Foi feita abertura coronaria, acesso aos condutos, patencia foraminal e mensuracao dos canais radiculares por meio de metodo visual e eletronico. A mensuracao no metodo visual (G1- controle) foi realizada introduzindo a lima no ponto da cuspide de referencia ate a lima atingir o forame apical. No metodo eletronico (G2- experimental), os dentes foram inseridos em alginato e a lima inserida no canal radicular ate o localizador indicar o apice. As mensuracoes foram realizadas em triplicata. As medias das medidas em milimetros foram submetidas ao teste de correlacao de Pearson no programa Biostat 2.0 com valor de significância de 5%. Resultados: as medidas observadas pelo metodo eletronico apresentaram correlacao com os resultados obtidos pelo metodo visual (r Pearson = 0,9490; p = 0,0000). Conclusao: os dentes deciduos artificiais podem ser utilizados em pesquisas oin vitroo com o localizador apical Root ZX II (AU) Objective: To allow the use of artificial primary teeth with pulp and root canals for in vitro studies with the Root ZX II electronic apex locator.Method: Twenty artificial primary molars with three root canals and no cracks, fractures or fabrication defects were selected. After coronal opening, access to the canals was gained, foramen patency waschecked and direct and electronic working length determination was performed. For direct visual working length determination (Group 1 ?control), the file was introduced into the canal from the reference cusp until its tip was visible at the apical foramen. For the electronic working length determination (Group 2 ? experimental), the teeth were embedded in alginate and the file was introduced into the canal until the electronica locator indicated the apex. The measurements were made in triplicate. The means (in mm) were subjected to Pearson?s correlation coefficient test using the Biostat 2.0 software. The significance level was set at 5%.Results: The electronic measurements correlated with the direct visual measurements (r=0.9490; p=0.0000).Conclusion: Artificial primary teeth can be used for in vitro studies with the Root ZX II electronic apex locator (AU)

Viabilidade de Dentes Decíduos Artificiais para Mensuração Eletrônica do Comprimento de Trabalho dos Canais Radiculares