Effect of cervical relining of acrylic resin copings on the accuracy of stone dies obtained using a polyether impression material
DOI:
https://doi.org/10.1590/S1678-77572008000100003Keywords:
Elastomers, Dimensional accuracy, Dental impression materials, Acrylic resinsAbstract
The purpose of this study was to evaluate the accuracy of the respective dies after polyether elastomeric procedure in the presence or absence of cervical contact of the acrylic resin shell with the cervical region, establishing a comparison to dies obtained with stock trays. This study consisted of three groups with 10 specimens each: 1) acrylic copings without cervical contact, (cn); 2) acrylic copings with cervical contact (cc); 3) perforated stock tray, (st). The accuracy of the resulting dies was verified with the aid of a master crown, precisely fit to the master steel die. ANOVA test found statistically significant differences among groups (p<0.001). Tukey's test found that the smallest discrepancy occurred in group cn, followed by cc, while the st group presented the highest difference (cc x cn: p=0.007; st x cn: p<0.001; st x cc: p<0.001).Downloads
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Published
2008-02-01
Issue
Section
Original Articles
License
Todo o conteúdo do periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons do tipo atribuição CC-BY.
How to Cite
Sá, A. T. G. de, Freitas, C. A. de, Sá, F. C. de, Ursi, W. J. S., Simões, T. C., & Freitas, M. F. A. de. (2008). Effect of cervical relining of acrylic resin copings on the accuracy of stone dies obtained using a polyether impression material . Journal of Applied Oral Science, 16(1), 7-11. https://doi.org/10.1590/S1678-77572008000100003