Comparative Retreatment Efficacy of Two Multi-File Systems with Different Access Cavity Designs: A Micro-Computed Tomography Study.

: The access cavity design and instrumentation system could affect the remaining root canal obturation materials in root canal retreatment. This study aimed to evaluate the efficiency of two different multi-file systems in removing obturation materials with two different access cavities utilizing micro-CT scanning. : Conservative access cavity (CAC) preparation was performed for 80 mandibular premolars.

Cone beam computed tomography aided diagnosis and treatment of endodontic cases: Critical analysis.

Although intraoral radiographs still remain the imaging method of choice for the evaluation of endodontic patients, in recent years, the utilization of cone beam computed tomography (CBCT) in endodontics showed a significant jump. This case series presentation shows the importance of CBCT aided diagnosis and treatment of complex endodontic cases such as; root resorption, missed extra canal, fusion, oblique root fracture, non-diagnosed periapical pathology and horizontal root fracture. CBCT may be a useful diagnostic method in several endodontic cases where intraoral radiography and clinical examination alone are unable to provide sufficient information.

[Comparison of in vitro antimicrobial activities of bioaggregate and mineral trioxide aggregate].

Treatment outcome of endodontic perforations depends on successful elimination of the associated microorganisms and infected tissues as well as the effective seal of the root-end or perforation site to prevent future contamination. Ideally, perforation repair material has to be bacteriostatic or bactericidal in order to prevent bacterial contamination as well as good sealing properties and biocompatibility. The aim of this study was to evaluate the antimicrobial effects of BioAggregate (BA) and Mineral Trioxide Aggregate (MTA) on the standard strains of Candida albicans, Enterococcus faecalis, Escherichia coli, Streptococcus mutans, Streptococcus sanguinis and Pseudomonas aeruginosa using the agar disc diffusion test.

Antimicrobial effect, in vitro, of gutta-percha points containing root canal medications against yeasts and Enterococcus faecalis.

Objective: The objective of this study was to determine the in vitro susceptibility of Enterococcus faecalis and the most prevalent Candida species as therapy-resistant microorganisms to gutta-percha points containing root canal medications.

Study Design: Gutta-percha points containing calcium hydroxide (Calcium Hydroxide Plus Points), chlorhexidine diacetate (Activ Points), or calcium hydroxide-chlorhexidine combinations (CHX/Ca Combi Points) were tested for their ability to inhibit growth of pure cultures of Candida albicans, Candida glabrata, Candida parapsilosis, Candida krusei, Candida tropicalis, Saccharomyces cerevisiae, and Enterococcus faecalis. Approximately 2 x 10(7) microorganisms per assay were suspended in diluted human serum and co-incubated with the gutta-percha points placed in Eppendorf tubes in an incubator for up to 2 weeks.

Intracanal placement of calcium hydroxide: a comparison of two different mixtures and carriers.

Objective. The purpose of this study was to compare the placement techniques of Ca(OH)(2). Study Design.