Comparative in vitro antibacterial activity of six root canal sealers against Enterococcus faecalis and Proteus vulgaris.

Aim: To evaluate the antimicrobial properties of six endodontic sealers in unset and set states against Enterococcus faecalis and Proteus vulgaris.

Methods: Six endodontic sealers were investigated in the unset and set state against Enterococcus feacalis and Proteus vulgaris using agar diffusion and direct contact tests.

Results: The mean inhibition zones for agar diffusion tests with Enterococcus feacalis were 19 mm for AH-26, 11 mm for TopSeal and Roth 601, 1 mm for AH-Plus, and 0 mm for GuttaFlow and EndoREZ (Kruskal-Wallis, P < 0.

Evaluation of different methods for the root-end cavity preparation.

Objective: The dentinal walls of root-end cavities were examined for the presence of cracks and debris in correlation with the area of the root surfaces that remained after the resection.

Study Design: One hundred extracted single-rooted teeth were endodontically treated, mounted in acrylic resin blocks, and the apical 2 mm of the root-apex was resected. According to the resected root surface area the teeth were divided into 2 groups having large (>2 mm(2)) or small (<2 mm(2)) surface area.