%0 Journal Article
%T Comparative analysis of standardization of three calibration endodontic rulers
%A Daniel Pinto de OLIVEIRA
%A Antonio Vinicius Holanda BARBOSA
%A La¨ªs Lemos CABRAL
%A L¨ªvia Madruga Faraco PEREIRA
%J Perspectives in Oral Sciences
%D 2010
%I 
%X Objective: This study aimed to evaluate the accuracy of different calibration endodontic rulers used for calibration of gutta-percha cones. Methods: Three hundred and sixty gutta-percha cones were calibrated by three different calibration endodontic rulers ( ngelus , Prisma  and Maillefer ) in the holes #25, #30, #35, #40, #45 and #50. The diameter of the calibrated end of each cone was measured by two examiners using a digital caliper. Data were organized into a table and statistically analyzed with ANOVA and Bonferroni test with a significance level of 5%. Results: The bestcalibration results were obtained by Prisma  (0.023 mm ¡À 0.002 mm), while the others presented the worst results of calibration with no statistical difference between them:  ngelus  (0.028 mm ¡À 0.002 mm) and Maillefer  (0.030 mm ¡À 0.002 mm). Conclusion: It can be concluded that the rule Prisma  had on average a higher result in the standardization of gutta-percha cones, followed by  ngelus  and Maillefer .
%K Endodontics
%K gutta-percha
%K root canal filling
%U http://poralsciences.up.edu.br/arquivos/poralsciences/File/Revista_POS_ed4_Art01.pdf