MATERIAL AND METHODS The aim of this study was evaluate the influence of ultrasonic activation (UA) of AH Plus to improve canal and isthmus filing, and analyse the antimicrobial effect against Enterococcus faecalis within dentinal tubules. Thirty mesial roots of mandibular first molars were selected and divided into 2 groups (n = 15): with and without UA of the sealer. Then the root canals were...

An efficient four-component synthesis of benzopyranopyridines is described by one-pot condensation of salicylaldehydes, thiols and 2 equiv of malononitrile with nano-PbWO4 as a robust and reusableheterogeneous catalyst under ultrasonic irradiation. Lead tungstate (PbWO4) nanostructures have been synthesized via a sonochemical method based on the reaction between l...

Aim: To compare the effect of ultrasonic, sonic and rotary sealer activation techniques on depth penetration in dentinal tubules. Materials Methods: Freshly extracted 60 single rooted human permanent mandibuar premolar with mature apex were collected. A size 10 no. K file (Dentsply Maillefer) was introduced into each canal. The irrigation procedure accomplished by using 2ml 5.25% NAOCl for used...

The influence of various intensities ultrasound applied for the electrolyte stirring on morphological and mechanical characteristics electrolytically produced copper coatings has been investigated. by galvanostatic regime electrodeposition from basic sulphate with added levelling/brightening additives at low temperature were characterized scanning electron microscopy (SEM) atomic force (AFM) te...

OBJECTIVE The aim of this study was to assess the efficacy of apical negative pressure (ANP), manual dynamic agitation (MDA), passive ultrasonic irrigation (PUI) and needle irrigation (NI) as final irrigation activation techniques for smear layer removal in curved root canals. MATERIALS AND METHODS Mesiobuccal root canals of 80 freshly extracted maxillary first molars with curvatures ranging ...

development of ultrasound technique has not been progressing for evaluating the internal quality of fruits as fast as that of processed foods. in this research for quality assessment of pear fruit (shah miveh variety) an ultrasonic measurement system was constructed to transmit and receive the ultrasonic waves. the apparatus included a pulser-receiver, a pair of 75 khz ultrasonic transducers wi...

BACKGROUND The purpose of this study was to use micro-computed tomography (micro-CT) scanning to evaluate the efficacy of sonic and passive ultrasonic irrigation (PUI) on calcium hydroxide (Ca[OH](2)) removal and to measure the volume and percentage of Ca(OH)(2) remaining in the root canal system. METHODOLOGY The root canals of 46 extracted human mandibular molar teeth were prepared with rota...