نتایج جستجو برای: bacterial microleakage
تعداد نتایج: 206408 فیلتر نتایج به سال:
Background and Aim: Evaluation of shear bond strength and microleakage of bonding agents is important as these properties play main roles in adhesion of composite to dental tissues. Microleakage results in bacterial penetration into dentin tubules and enamel surfaces and causes sensitivity and recurrent caries followed by destruction of composite filling. Insufficient shear bond strength result...
Context:
 An intraorifice barrier after endodontic therapy could remarkably mitigate the movement of bacteria and their by-products improve long-term prognosis a root canal treated teeth by serving as barriers against fluid bacterial ingress.
 Aims:
 The idea present study was to compare coronal microleakage in with 2-mm 3mm Bulkfill flowable composite, Glass Ionomer Cement (GIC)...
INTRODUCTION The aim of this study was to compare the coronal seal of different thicknesses of MTA with gutta-percha after post space preparation. MATERIALS AND METHODS A total of 50 maxillary central incisors randomly divided into 5 experimental groups (n = 8). After preparation of the root canals with step back technique, in groups 1 and 2, post spaces were prepared and 4 or 5 mm gutta-perc...
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...
Use of materials with anti-bacterial effects including Chlorhexidine after tooth carving and before placing restorative materials has been prevailed; nonetheless, effect of this solution on amount of microleakage after restoration has been mentioned as one of the challenges to use this solution. With regard to few studies at the area of long term effects of Chlorhexidine on microleakage, the pr...
introduction: there are several methods for evaluating microleakage in dentistry, for example dye or bacterial leakage, electro-chemical methods, radioisotope labeling and fluid filtration. the purpose of this study was to assemble the fluid filtration system for quantitative evaluation of microleakage in dental materials. materials and methods: the roots were connected to a tube filled with an...
OBJECTIVES Microbial leakage through the implant-abutment (I-A) interface results in bacterial colonization in two-piece implants. The aim of this study was to compare microleakage rates in three types of Replace abutments namely Snappy, GoldAdapt, and customized ceramic using radiotracing. MATERIALS AND METHODS Three groups, one for each abutment type, of five implants and one positive and o...
INTRODUCTION This in vitro study compared the apical sealing ability of three common root end filling materials namely mineral trioxide aggregate (MTA), intermediate restorative material (IRM) and calcium-enriched mixture (CEM) cement using a bacterial leakage model. METHODS AND MATERIALS The study was conducted on 83 single-rooted human teeth. Tooth crowns were cut and root canals were prepa...
Purpose: This study aimed to compare the antibacterial effect and microleakage of two types fissure sealants; Beautisealant Embrace wet Bond. Materials Methods: for evaluation effect, 30 saliva samples were obtained sent microbiology laboratory where streptococcus mutans isolated both materials was detected by agar diffusion method. For test extracted sound permanent molars obtained. Two groups...
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