3. Tasdemir T, et al. (2008). Effect of Passive Ultrasonic Irrigation on Apical Extrusion of Irrigating Solution. Eur J Dent. Methods: Measured amount of NaOCl through the apical foramen when NaOCl was left in the canal versus passive ultrasonic activation of the irrigant conclusions: PUI extruded significantly less irrigant than the control group (2.15 ± 2.73 versus 14 ± 13.03 uL, respectively...

AIM To evaluate whether passive ultrasonic irrigation (PUI) of 2.5% NaOCl would dissolve necrotic pulp tissue from simulated accessory root canals (SACs) better than passive placement of the irrigant, when temperature was equilibrated between the two treatments. METHODOLOGY Transparent root canal models (n = 6) were made from epoxy resin. SACs of 0.2 mm diameter were placed at defined angles ...

introduction : the aim of this study is to evaluate the effect of a newly introduced nanosilver based irrigant on dentin roughness in comparison with three commonly used root canal irrigants. material and methods : irrigants tested were: naocl 5.25%, edta 17%, chx 2% and newly introduced imidazolium-based silver nanoparticle (im agnp) irrigant at 5.8×10 -8 mol/l. distilled water was used as con...

PURPOSE The aim of this study was to evaluate the cytotoxic effect of a novel nano-silver particle (25.2±6.5 nm) endodontic irrigant (0.2 mM) and compare it with 3% sodium hypochlorite. MATERIALS AND METHODS Two cell types, mouse fibroblast National Institutes of Health 3T3 (NIH 3T3) and primary human periodontal ligament stem cell (hPDLSCs) were used in a test for the effect of direct and in...

OBJECTIVE Apical extrusion of debris and irrigants during cleaning and shaping of the root canal is one of the main causes of periapical inflammation and postoperative flare-ups. The purpose of this study was to quantitatively measure the amount of debris and irrigants extruded apically in single rooted canals using two reciprocating and one rotary single file nickel-titanium instrumentation sy...

INTRODUCTION The aim of this study was to evaluate the effect of needle-insertion depth on the irrigant flow inside a prepared root canal during final irrigation with a syringe and two different needle types using a Computational Fluid Dynamics (CFD) model. METHODS A validated CFD model was used to simulate irrigant flow from either a side-vented or an open-ended flat 30-G needle positioned i...

OBJECTIVE Immature teeth have a large apical opening and thin divergent or parallel dentinal walls; hence, with conventional needle irrigation there is a very high possibility of extrusion. This study was done to compare the apical extrusion of NaOCl in an immature root delivered using EndoVac and needle irrigation. MATERIALS AND METHODS Eighty freshly extracted maxillary central incisors wer...

INTRODUCTION Effective irrigant delivery and agitation are prerequisites for successful endodontic treatment. METHODS This article presents an overview of the irrigant agitation methods currently available and their debridement efficacy. RESULTS Technological advances during the last decade have brought to fruition new agitation devices that rely on various mechanisms of irrigant transfer, ...

This study evaluated the influence of irrigation tip, root canal curvature and final apical diameter on periapical debris and irrigant extrusion during root canal instrumentation. After being classified as mildly or moderately curved, the mesiobuccal root canals of 90 human molars were instrumented. The teeth were allocated into three groups according to the used needle type: a flat open-end ne...

statement of problem: bacterial agents are the primary cause of pulpoperiapical diseases. therefore, an irrigating solution with proper antibacterial ability should be used to eliminate the bacterial agents during canal instrumentation. purpose: the aim of present study was to compare the antibacterial effect of 0.2% chlorhexidine to 0.5% sodium hypochlorite as canal irrigating solutions. mater...