Retreatment of a 6-canalled mandibular first molar with four mesial canals: a case report.

Successful root canal treatment requires adequate knowledge regarding morphologic variations in root canal system of teeth. This report describes a six-canalled mandibular first molar with four mesial root canals requiring endodontic retreatment. The two additional canals in the mesial root were found during retreatment with the aid of illumination and magnification.

Coronal microleakage in root canals obturated with lateral compaction, warm vertical compaction and guttaflow system.

Introduction: Root canal obturation seals the root canal system to prevent re-entry and/or growth of microorganisms. The provision of an appropriate restoration to coronally seal the access cavity affects the success of endodontic treatment. The purpose of this study was to evaluate the coronal microbial leakage in root canals that were either filled by lateral compaction, GuttaFlow or warm vertical compaction.

Antibacterial substantivity of Carvacrol and sodium hypochlorite in infected bovine root dentin.

Introduction: Various methods commonly used for cleaning and shaping root canals have not been successful in completely eradicating bacteria due to anatomic complexity and root canals irregularities. Disinfecting the canals with intracanal irrigants in addition to proper cleaning and shaping can produce a successful outcome. Antimicrobials with sustained antibacterial activity would be desirable for irrigation.

Antimicrobial activity of three root canal irrigants on enterococcus faecalis: an in vitro study.

Introduction: The aim of this study was to compare the antimicrobial effects of 2.5% Sodium hypochlorite (NaOCl), 2% Chlorhexidine Gluconate (CHX) and BioPure MTAD (MTAD) on Enterococcus (E) faecalis-contaminated root canals of human extracted teeth.

Materials And Methods: Seventy human intact extracted single-rooted teeth with straight root canal randomly divided into 5 groups: positive control (n=5), negative control (n=5), 2.

Cytotoxic effect of a new endodontic cement and mineral trioxide aggregate on L929 line culture.

Introduction: The aim of this study was to compare the cytotoxicity of Mineral Trioxide Aggregate (MTA) and a New Endodontic Cement (NEC) on L929 mouse fibroblasts.

Materials And Methods: Different dilutions (Neat, 1/2, 1/10, 1/100) of fresh and set materials placed adjacent flasks of L929 in DMEM medium. Cellular viability was assessed using MTT assay in three time intervals (24, 48, and 72 h after mixing).

Comparison of Canal Preparation Pattern of K3 and ProTaper Rotary Files in Curved Resin Blocks.

Introduction: The purpose of this study was to evaluate and compare canal preparation pattern of K3 and ProTaper rotary files in curved resin blocks.

Materials And Methods: Twenty-four resin blocks were used in this experimental study and randomly divided into two groups. Their initial images were scanned.