INTRODUCTION The purpose of this study was to compare the sealability of three different commercial types of mineral trioxide aggregate (MTA) and calcium enrichment mixture (CEM) cement as an experimental root-end filling material. MATERIALS AND METHODS Forty-six single rooted teeth were cleaned, shaped, and obturated. The apical 3 mm of each root was resected and root-end cavities with 3 mm ...

Sealing is one of the most important process steps in industrial packaging, because sealed seam sensitive section a package terms quality. For this reason, major focus flexible packaging sealing process, and among this, heat frequently used technology. In detail, applications processes are confronted with four conflicting objectives: increasing quality, reducing dwell time, temperature, robustn...

background and aims. different materials have been used for root-end filling during surgical endodontic treatment. the aim of this in vitro study was to evaluate the dye penetration in different thicknesses of calcium enriched mixture (cem) cement as root-end filling material. materials and methods. following root canal filling in 70 extracted human single-rooted premolar teeth, the apical 3 mm...

This study evaluated the ability of mineral trioxide aggregate (MTA) to seal the root end effectively. Seventy-six single-rooted, extracted human teeth were cleaned and shaped using a step-back technique. After root-end resection and ultrasonic preparation, 72 root sections were randomly allocated to three groups and filled with dental amalgam and cavity liner, Super-EBA, or MTA. Microleakage w...

AIM The aim of this study is to evaluate the sealing ability of Biodentine(TM), which is new calcium-silicate based dental cement and has endodontic indications similar to those of MTA. METHODS The study sample consists of 21extracted human mandibular anterior teeth. The teeth were submitted to root-end preparation and instrumented up to file #40 by step back technique and randomly divided in...

statement of the problem: insolubility is an important criterion for an ideal root-end filling material to both prevent any microleakage between the root canal and the periradicular space and provide sealing ability. purpose: many recent studies have shown that mineral trioxide aggregate (mta) and calcium-enriched mixture (cem) have acceptable sealing ability. the purpose of this in vitro study...

We evaluated the applicability of metal spray coating as a waterproofing/corrosion protection method for a concrete structure used for water purification. We carried out an ozone resistance test on four metal sprays and evaluated the water permeability and bond strength of the metals with superior ozone resistance, depending on the surface treatment method. In the ozone resistance test, four me...

background: apical leakage assessment is a way to compare the effi ciency of a fi lling material to seal the apical region of the tooth. many microleakage testing techniques have been introduced through the years, but there has been no agreement as to which technique gives the most accurate results. the aim of this study was to compare the accuracy of fl uid fi ltration and bacterial leakage te...