Effects of a Peganum harmala (Zygophyllaceae) preparation for root canal disinfection.

The aim of this study was to determine the antimicrobial capacity, minimum inhibitory concentration (MIC), and cytotoxic effects of a Peganum harmala seed extract in comparison to 5.25% sodium hypochlorite (NaOCl). The oral pathogen Enterococcus faecalis was used to evaluate the antimicrobial capacity, and the MIC values were determined through serial dilution.

The Effect of Fragaria vesca Extract on Smear Layer Removal: A Scanning Electron Microscopic Evaluation.

Introduction: Successful endodontic treatment depends on elimination of the microorganisms through chemomechanical debridement. The aim of this in vitro study was to evaluate the effectiveness of Fragaria vesca (wild strawberry) extract (FVE) on the removal of smear layer (SL).

Methods And Materials: In this analytical-observational study, 40 extracted mandibular and maxillary human teeth were selected.

Microhardness Properties of Mineral Trioxide Aggregate and Calcium-enriched Mixture Cement Plugs at Different Setting Conditions.

Background: Providing an apical stop in open apex roots is one of the endodontic challenges. The aim of present study was to compare the surface hardness of both mineral trioxide aggregate (MTA) and calcium-enriched mixture (CEM) cement at different setting situations.

Materials And Methods: A total of 40 freshly extracted human teeth with a single root and normal apex and no obvious caries or curvatures were selected.

The Effect of Preparation Size on Efficacy of Smear Layer Removal; A Scanning Electron Microscopic Study.

Introduction: Enlargement of the root canal may potentially affect efficient smear layer (SL) removal. The aim of the present in vitro study was to compare SL removal following canal preparation with two different sizes/tapers by means of scanning electron microscopy (SEM).

Methods And Materials: A total of 50 extracted human mandibular premolars were decoronated.

Diagnostic value of cone-beam computed tomography and periapical radiography in detection of vertical root fracture.

Introduction: Vertical root fracture (VRF) is the longitudinal fracture of the root in endodontically treated teeth. Considering the limitations of two-dimensional radiographic images in detection of VRF and introduction of cone-beam computed tomography (CBCT), this study was designed to find the sensitivity, specificity and accuracy of CBCT and periapical (PA) radiography in detection of VRFs.

Methods And Materials: This was a cross-sectional in vitro study on 80 extracted human single canal teeth including 40 maxillary and 40 mandibular teeth.

Impact of root canal preparation size and taper on coronal-apical micro-leakage using glucose penetration method.

Objectives: The purpose of this in vitro study was to assess the effect of root canal preparation size and taper on the amounts of glucose penetration.

Material And Methods: For conducting this experimental study, eighty mandibular premolars with single straight canals were divided randomly into 2 experimental groups of 30 samples each and 2 control groups. Using K-files and the balance force technique, canals in group 1 were prepared apically to size 25 and coronally to size 2 Peesoreamer.

The effect of retreatment procedure on the pH changes at the surface of root dentin using two different calcium hydroxide pastes.

Aim: To compare pH changes at the cervical, middle and apical surfaces of root dentin in retreated and non- retreated teeth, after canal obturation with two different calcium hydroxide pastes.

Materials And Methods: After instrumentation of 55 extracted teeth, three cavities with 0.75 mm depth and 1.

Knowledge of Oral Hygiene among Hemophilic Patients Referred to Iranian Hemophilia Society.

Background And Aims: Hemophilic patients are faced with poor oral hygiene due to concerns about their dental care. The present study assessed the knowledge of hemophilic patients about oral hygiene and the effect of oral hygiene instruction in patients referred to Iranian Hemophilia Society.

Materials And Methods: This cross-sectional study was carried out on 30 hemophilic patients randomly selected from volunteer patients referred to Iran Hemophilia Center.

One-visit versus multiple-visit endodontic therapy--a review.

A growing perception in endodontic circles is that root canal therapy requires one treatment visit only. One-visit endodontics offers many potential advantages. It is less time-consuming, resulting in less cost for the patient, potentially more profit for the dentist, less painful and less traumatic than multi-visit treatment.

In vitro evaluation of antibacterial activities of root canal sealers.

Objective: The purpose of this study was to compare the antimicrobial effect of AH-26 (a resin-based sealer), Dorifill (a ZOE-based sealer), and pure ZOE after 24 hours and after one week.

Methodology: All sealers were prepared according to the manufacturers' directions immediately before testing. The micro-organisms used in this assay included Staphylococcus aureous and Streptococcus mutans, which were prepared from isolated species in the microbiology laboratory.