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Leakage of interim post and cores used during laboratory fabrication of custom posts
Marisa Gomes de Amorim Demarchi1, Elizabeth Francisco Loureiro Sato
1School of Dentistry of Santo Amaro, University of Santo Amaro, São Paulo, Brazil.
Abstract:
The aim of this study was to compare coronal microleakage in two conditions. Twenty-eight extracted upper molars were endodontically treated and divided into two groups and controls: group A: prefabricated post and core permanently cemented; and group B: prepared for a post and restored with a temporary post crown cemented with a temporary cement. The teeth were thermocycled, immersed in black India ink for 1 week, and made transparent. Results indicated that the permanently cemented, prefabricated post and core produced the best seal (p < 0.01); leakage was significantly greater with the temporary post crown and was similar to that of a positive control group.