نتایج جستجو برای: interlayer bond strength testing device
تعداد نتایج: 1230129 فیلتر نتایج به سال:
Background and Aims: The aim of this in vitro study was to compare shear bond strength of metal brackets bonded to dental porcelain on the basis of presence or absence of silane, type of acid [hydrofluoric acid (HF) or phosphoric acid (H3PO4)] and roughness of porcelain surface (glazed or deglazed) within mouth-like environment.Materials and Methods: Eighty glazed ceramic disks were randomly di...
Background and Aim: Nonmetallic tooth- colored posts adhere to canal walls by dentin bonding agents and resin cements. Better retention and proper distribution of stress result from enough and proper bonding. The purpose of this study was to evaluate bond strength of D.T. Light - post with two different resin cements (self-cure & dual-cure) and to investigate the effect of irrigating solutions ...
to assess the effects of different final irrigants on the bond strength of bonded root filling materials, epiphany/resilon and epiphany self-etch (se)/resilon.the root canals of eighty single-rooted extracted human teeth were prepared. after the smear layer was removed using 17% edta, the samples were randomly divided into eight groups. in groups 1 and 2, no additional irrigant was used after e...
statement of problem: in some clinical situations, repair of composite restorations is treatment of choice. improving the bond strength between one new and old composite usually requires increased surface roughness to promote mechanical interlocking since chemical bonding might not be adequate. similarly, the treatment of a laboratory fabricated resin composite restoration involves the same pro...
Background and Aims: Debonding of denture teeth from the denture base can be frustrating for both clinician as well as patient. The aim of this study was to determine the effect of different tooth preparations on the tensile bond strength of composite denture teeth to acrylic denture base material. Materials and Methods : In this experimental study, 108 anterior Glamour teeth were selected ...
Background and Aims: Dentin contamination with different materials used in pediatrics is effective on the bond strength of adhesives to primary teeth. Therefore, the purpose of this in vitro study was to evaluate the effect of zinc oxide-eugenol and formocresol on the shear bond strength (SBS) of resin composite to the dentin in primary teeth. Materials and Methods: A total of 72 extracted seco...
the aim of this study was to compare the effect of an acidic environment on dislocation resistance (push-out bond strength) of endosequence root repair material (errm putty and errm paste), a new bioceramic-based material, to that of mineral tri-oxide aggregate (mta).one-hundred twenty root dentin slices with standardized canal spaces were divided into 6 groups (n = 20 each) and filled with too...
ethanol wet-bonding (ewb) technique has been stated to decrease degradation of resin-dentin bond. this study evaluated the effect of two ewb techniques on composite resin-to-enamel bond strength.silicon carbide papers were used to produce flat enamel surfaces on the buccal faces of forty-five molars. optibond fl (ofl) adhesive was applied on enamel surfaces in three groups of 15 namely: enamel ...
the bond strength of adhesives in irrigated dentin behaves differently over time. the aim of this study was to evaluate the influence of long-term water storage and thermocycling on the microtensile bond strength of adhesive systems to dentin irrigated with endodontic solutions.sixty human molars were used after removal of the occlusal portion and exposure of the dentin by grinding. the specime...
introduction : the aim of this in vitro study was to evaluate the effect of smear layer on the push-out bond strength of white mineral trioxide aggregate (wmta) with and without disodium hydrogen phosphate (na 2 hpo 4 ). materials and methods: dentin discs with standard cavities were obtained from extracted human single-rooted teeth and divided to 4 groups ( n =15) according to the irrigation r...
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