نتایج جستجو برای: performance of irrigation canals
تعداد نتایج: 21230993 فیلتر نتایج به سال:
teachers beliefs have usually been left unattended in the realm of educational research in iranian context. one of those beliefs which seems to impact teachers performance in the classroom is their sense of self-efficacy, which refers to teachers belief in their ability to enhance student achievement and in bringing about positive learning outcomes. the present study aimed to investigate the pr...
asymmetric membranes are widely used in many industrial membrane separation processes. the major advantage of membrane filtration over the conventional process is its ability to remove a wider spectrum of particles without using any chemicals. hollow fiber configuration offer many advantages over flat-sheet or tubular membranes. the spinning process of hollow fiber may look simple, yet it is te...
the present study sought to investigate the role of dynamic assessment (da) in improvement of iranian efl writing performance at different language proficiency levels. to this end, after conducting the quick placement test, 60 iranian efl learners were assigned to two groups with different language proficiency levels. in both groups each participant wrote two compositions, one before and one af...
During the cleaning and shaping of the root canal, various irrigants have been used to reduce the residual debris, necrotic tissue, and bacteria, as well as to remove smear layer. Though sodium hypochlorite (NaOCl) is the most common irrigant used in root canal treatment, chlorhexidine (CHX) has been suggested as either an alternative or an adjunct root canal irrigant because of its antimicrobi...
OBJECTIVES To determine the influence of passive ultrasonic irrigation (PUI) on apical extrusion of irrigating solution. METHODS Twenty freshly extracted maxillary and mandibular incisors with single straight root canals were instrumented with ProTaper rotary files. During final irrigation, the root canals were filled with 2.5% sodium hypochlorite (NaOCl) solution and PUI was performed with a...
Effects of Different Final Irrigating Solutions on Depth of Sealer Penetration into Dentinal Tubules
Aim: To evaluate the maximum depth of sealer penetration into dentinal tubules at the coronal, middle, and apical third of root canals, following the use of different final irrigation solutions. Materials and methods: Eighty freshly extracted mandibular premolars were selected for the study. After decoronation, instrumentation of samples was done using Protaper universal rotary file system till...
Background. The current research aimed to assess the prevalence of facultative anaerobes isolated from the root canals of deciduous molars. Methods. The present research enrolled 60 children in the 6‒9-year age group based on clinical and radiographic findings. Under aseptic conditions, access cavities were prepared followed by collection of samples from infected root canals with the help of st...
INTRODUCTION The aim of this study was to compare the efficacy of conventional syringe, ultrasonic, EndoVac (Discus Dental, Culver City, CA), and Self-Adjusting File (SAF) (Re-Dent-Nova, Ra'nana, Israel) irrigation systems in removing calcium hydroxide (Ca[OH]2) from simulated root canal irregularities. METHODS The root canals of 88 extracted single-rooted teeth were prepared using ProTaper r...
c h bstract he purpose of this prospective, randomized, singlelind study was to compare the in vivo antibacterial fficacy of a hand/rotary technique versus a hand/ otary/ultrasound technique in mesial root canals of ecrotic mandibular molars. The hand/rotary group onsisted of 16 mesial roots prepared with a hand/ otary technique. The hand/rotary/ultrasound group onsisted of 15 mesial roots prep...
Irrigation of root canals during endodontic therapy is an important step. Sodium hypochlorite (NaOCl), hydrogen peroxide (H2O2), chlorhexidine (CHX) and normal saline are commonly used intracanal irrigants to disinfect and clean the root canals. This prospective study was set to observe the efficacy of normal saline (0.9% NaCl) irrigation with sequential irrigation of 3% H2O2, 5.2% NaOCl and 0....
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