Background and Aim: The aim of this in vivo study was to evaluate the microbial flora in infected root canals after the treatment with and without calcium hydroxide (Ca(OH)2) dressing using hand and rotary instruments. Subjects and Methods: Twenty-eight patients were selected. After access cavity preparation completed, the first culture were taken from each root canal with sterile paper points....

objective(s) extracellular matrix (ecm) and basement membrane (bm) play important roles in many developmental processes during development and after birth. among the components of the bm, collagen fibers specially type iv are the most important parts. the aim of this study was to determine the time when collagen type iv appears in the bm of lens structure during mouse embryonic development. mat...

Aim. To determine the root and canal morphology of permanent maxillary first molars in a Sri Lankan population with special emphasis on the presence of a second canal in the mesiobuccal root. Materials and Methods. One hundred and fourteen permanent maxillary first molars were examined. The root numbers of the molars were recorded. Root canal morphology was studied using a clearing technique. T...

introduction: coronal microleakage is the major cause of failure of root canal treatments. the purpose of this study was to evaluate the sealing ability of white mta, c&b; metabond and cavit against coronal microleakage of enterococcus faecalis for four months. methods and materials: ninety extracted single–rooted human teeth were selected. root canal instrument-tation and abturation with gutta...

Introduction: To evaluate the effects of using sodium hypochlorite irrigant on pull-out bond strength of self-etch and self-adhesive resin cements to dentin. Methods: Sixty intact premolars were decoronated and the root canals were prepared by step-back technique. The teeth were divided into two groups according to the irrigant used during root canal treatment: 5.25% sodium hypochlorite and nor...

in this case report, we described a 74-year-old female patient with major complaint of respiratory problemsdyspnea after meal. chest x-ray of the patient revealed a  gianttype iv hiatal hernia. preoperative evaluations of the patient included esophagoscopy, esophageal manometry, barium swallow, and ct-scan. repair of the hernia was performed using a dual mesh on the diaphragm and partial anteri...

INTRODUCTION The purpose of this study was to identify the influential factors responsible for clinical instrument separation of reused ProTaper Universal rotary instruments (Dentsply Maillefer, Ballaigues, Switzerland). METHODS Six thousand one hundred fifty-four root canals in 2,654 teeth were prepared using ProTaper Universal files in endodontic clinics. Separation incidence was determined...

Soil salinization has become a worldwide issue affecting agricultural development. Statistical methods and spatial analysis were used to analyze the degree type of saline soils their distribution. The driving factors soil salinity explored using Geodetetcor models. In this study, 84 samples collected from 0–20 cm layer, total salt concentration ion composition measured. results statistical clus...

In this case report, we described a 74-year-old female patient with major complaint of respiratory problemsdyspnea after meal. Chest X-ray of the patient revealed a  gianttype IV hiatal hernia. Preoperative evaluations of the patient included esophagoscopy, esophageal manometry, barium swallow, and CT-scan. Repair of the hernia was performed using a dual mesh on the diaphragm and partial anteri...

AIM To evaluate the push-out bond strength (BS) of direct anatomic posts (DAPs) and conventional fiber posts (CFPs) cemented with different luting agents in different thirds of flared root canals. MATERIALS AND METHODS A total of 60 human single-rooted canine teeth were transversally sectioned 16 mm from the radicular apex. After endodontic treatment, canals were flared with diamond burs. Sam...