search
for
 About Bioline  All Journals  Testimonials  Membership  News  Donations


Brazilian Journal of Oral Sciences
Piracicaba Dental School - UNICAMP
EISSN: 1677-3225
Vol. 8, No. 3, 2009, pp. 128-131
Bioline Code: os09026
Full paper language: English
Document type: Research Article
Document available free of charge

Brazilian Journal of Oral Sciences, Vol. 8, No. 3, 2009, pp. 128-131

 en Cast metal core adaptation using two impression materials and intracanal techniques
Camarinha, Sônia Maria Lemos Brancato; Pardini, Luiz Carlos; Garcia, Lucas da Fonseca Roberti; Consani, Simonides & Pires-de-Souza, Fernanda de Carvalho Panzeri

Abstract

Aim: This study evaluated the adaptation of cast metal cores (CMCs) using two impression materials and two intracanal impression techniques.
Methods: Ten single-rooted human teeth had their root canals prepared to receive a CMC. Intracanal impressions were obtained with addition and condensation silicone materials using two types of intraradicular supports: hypodermic needle or prefabricated polycarbonate posts. Four impressions were obtained from each tooth totalizing 40 models, on which CMCs were prepared. CMC adaptation to the canal was analyzed radiographically and microscopically. The teeth were radiographed with the CMC positioned and the images were analyzed using an image-analysis software (ImageLab). In the second analysis, the teeth were sectioned longitudinally and the CMC adaptation was evaluated with a two-coordinate microscope. In both analyses, CMC adaptation to the canal was determined by calculating the percentage of the prepared canal space that was occupied by the core.
Results: Statistically significant difference (2-way ANOVA - Bonferroni; p<0.05) was found between the mean values CMC adaptation obtained with the two intraradicular supports.
Conclusions: The intracanal impression technique using hypodermic needle allowed a more accurate reproduction of the prepared canal space and provided significantly better CMC adaptation when the cores were obtained from addition silicone impressions.

Keywords
impression technique, cast posts, silicone elastomers, intraradicular support

 
© Copyright 2009 - Piracicaba Dental School - UNICAMP São Paulo - Brazil
Alternative site location: http://www.fop.unicamp.br/brjorals

Home Faq Resources Email Bioline
© Bioline International, 1989 - 2017, Site last up-dated on 16-Oct-2017.
Site created and maintained by the Reference Center on Environmental Information, CRIA, Brazil
System hosted by the Internet Data Center of Rede Nacional de Ensino e Pesquisa, RNP, Brazil