background and aim: bacterial elimination from root canal system is one of the aims in endodontic treatments, so the addition of antibiotics to sealers can increase their antimicrobial efficacy, as in this study we are determining the in-vitro antimicrobial effect of ah26 and ah plus sealers mixed with amoxicillin, triple antibiotic pastes and nanosilver on enterococcus faecalis. materials and ...

statement of problem: the bond strength of root canal sealers to gutta-percha seems to be an important property for maintaining the integrity of the apical seal which can result in reducing apical microleakage. purpose: the purpose of the present study was to compare the tensile bond strengths of four types of root canal sealers to gutta–percha. this study measured the maximum forces needed to ...

background: sealing ability is one of the most important features of endodontic sealers. the purpose of this in vitro study was to compare the sealing ability of a resin-based sealer with a mineral trioxide aggregate-based sealer. materials and methods: a total of 60 single-rooted extracted human teeth were randomly divided into two experimental groups (n = 25) and two control groups (n = 5). a...

OBJECTIVES The aim of this study was to evaluate the effect of the precipitate that was formed by combining Sodium Hypochlorite (NaOCl) and Chlorhexidine Gluconate (CHX) on the sealing ability of root canal obturation materials. MATERIALS AND METHODS The fluid filtration method was conducted on a total of 100 roots. Samples were randomly divided into two control (n=5) and three experimental g...

The present study was conducted to determine the influence of 2 intracanal medicaments (calcium hydroxide, chlorhexidine gel 2%) when used either alone or combined on the short- and long-term sealing ability of permanent root canal fillings. Ninety human upper central incisors were divided into 4 experimental groups (n=20). All root canals were instrumented in a step-back motion and then treate...

OBJECTIVES An important factor that interferes with the bonding between the root canal wall and resin cement is the root canal sealer remnant. There is controversy about the effect of eugenol-containing sealers on the bond strength between resin cements and fiber post. The aim of this study was to evaluate the effect of the type of endodontic sealer on the bond strength of FRC posts cemented wi...

background: during endodontic procedures, the smear layer is formed as a result of mechanical instrumentation of the canal. combination of ethylenediamine tetraacetic acid (edta) and sodium hypochlorite (naocl) is widely used for removal of the smear layer. application of mixture of tetracycline, acid, and detergent (mtad) as final irrigant subsequent to initial irrigation of 1.35% naocl has be...

INTRODUCTION The aim of this in vitro study was to compare the efficacy of two retreatment rotary systems in removal of gutta-percha (GP) and sealer from the root canal walls with and without use of solvent. MATERIALS AND METHODS Sixty single-canalled distal roots of mandibular molars were prepared and root filled with gutta-percha and AH26. Each canal was randomly allocated to receive one of...

The study used 16x106 heteroploid L929 mouse fibroblasts in 40 ml Eagles’ MEM (minimum essential medium) which contained 10% fetal bovine serum (FBS; HyClone, Logan, Utah), 10.000 units of penicillin-G/ml, 10 mg of Streptomycin/ml, and 200mM of L-glutamine (Sigma Chemical Co., St Louis). Cells were maintained at 37°C under 5% CO2, 100% humidity, and were labeled with 300 μCi 51Cr in the form of...