Evaluation of Coronal Microleakage in Two Different Post-Core Systems

Abstract

ABSTRACT Aims The aim of this in vitro study was to compare the cast metal and ceramic post-core systems, which have similar laboratory and clinical procedures according to coronal microleakage. Materials and methods Forty extracted maxillary anterior teeth were endodontically treated. Specimens were randomly assigned to four experimental groups (n = 10). The groups consisted of a cemented metal post-core group (CMPC), a not cemented metal post-core group (NMPC), a cemented ceramic post-core group (CZPC) and a not cemented ceramic post-core group (NZPC). A dual-cure resin cement (Panavia F) was used for both of the cemented groups. All specimens were stained with basic fuchsine and embedded in epoxy resin. Sagittal sections were obtained using a grinding machine and examined under binocular and coal microscopes. Coronal leakages were scored and data were analyzed using Kruskall-Wallis analysis of variance test. Results Results were compared between and within groups. No statistically significant differences were found between groups. Conclusion Cement alone is not sufficient to provide a barrier against microleakage in post-core restorations. The chosen post-core type or application methods may be more relevant to the leakage issue.