نتایج جستجو برای: bond strength exposure time

تعداد نتایج: 2367431  

Journal: :dental research journal 0
vajihesadat mortazavi abbasali khademi kazem khosravi mohammadhossein fathi mohammadesmaeil ebrahimi –chaharom shirin shahnaseri

background: as the use of different irrigants to eliminate residual debris and smear layer in the field of endodontic is unavoidable, by considering the effect of irrigants on the bond strength of resin composite restorations, this study was designed to evaluate the effect of a mixture of a tetracycline isomer, an acid, and a detergent (mtad) on the shear bond strength of two self-etch adhesive...

In this work, the strength of cold roll bond of the commercially pure titanium (CP Ti) sheet and the effect of TiO2 nanoparticles on bond strength was investigated. Through the accumulative roll bonding process, which is considered among the important severe plastic deformation processes, the creation of suitable bonds plays a significance role in the ultimate strength of the bond. Thus, resear...

Amir Ghasemi, Leila Eftekhar, Majid Bargrizan, Marzieh Gholami, Mohammad Asnaashari, Yasaman Rezvani,

Background and Aim: Er,Cr:YSGG laser irradiation has been suggested as an effective method of cavity preparation and surface treatment to enhance the bond strength. The aim of this study was to assess the microshear bond strength of Fuji II LC glass ionomer (GI) cement to primary dentin following bur preparation and Er,Cr:YSGG irradiation. Materials and Methods: This in vitro, experimental stu...

Journal: :journal of dentistry, tehran university of medical sciences 0
siavash savadi oskoee professor, department of operative dentistry, school of dentistry, tabriz university of medical sciences, tabriz, iran. mahmoud bahari assistant professor, dental and periodontal research center, school of dentistry, tabriz university of medical sciences, tabriz, iran ; assistant professor, department of operative dentistry, school of dentistry, tabriz university of medical sciences, tabriz, iran. soodabeh kimyai professor, department of operative dentistry, school of dentistry, tabriz university of medical sciences, tabriz, iran. paria motahhari post-graduate student, department of oral medicine, school of dentistry, tabriz university of medical sciences, tabriz, iran. mohammad jafar eghbal professor, iranian center for endodontic research, dental research center, school of dentistry, shahid beheshti university of medical sciences, tehran, iran. saeed asgary professor, iranian center for endodontic research, dental research center, school of dentistry, shahid beheshti university of medical sciences, tehran, iran.

immediate restoration after vital pulp therapy is essential in order to create and maintain effective coronal seal.the aim of this study was to evaluate the shear bond strength of recently used pulp capping materials: white mineral trioxide aggregate (mta), and calcium enriched mixture cement (cem) to composite resin with the use of etch-and-rinse and self-etch adhesive systems and compare them...

Journal: :Brazilian dental journal 2011
Paulo Roberto Amaral Gonçalves Rafael Ratto de Moraes Ana Rosa Costa Américo Bortolazzo Correr Paulo Roberto Aranha Nouer Mário Alexandre Coelho Sinhoreti Lourenço Correr-Sobrinho

This study evaluated the bond strength of brackets to ceramic testing different etching times and light sources for photo-activation of the bonding agent. Cylinders of feldspathic ceramic were etched with 10% hydrofluoric acid for 20 or 60 s. After application of silane on the ceramic surface, metallic brackets were bonded to the cylinders using Transbond XT (3M Unitek). The specimens for each ...

Journal: :journal of dentistry, tehran university of medical sciences 0
m. khoroushi sh. motamedi

objective: different ceramic repair systems have been reported for fractured ceramics. however, limited information is available concerning the bond strength of these systems especially after thermocycling. the aim of this in-vitro study was to determine the effect of thermocycling on the shear bond strength of composite-resin to feldspathic porcelain with and without silane pretreatment. mater...

Journal: :dental research journal 0
niloofar shadman shahram farzin ebrahimi maryam azizi shoul hasti sattari

background: casein phosphopeptide-amorphous calcium phosphate (cpp-acp) is applied for remineralization of early caries lesions or tooth sensitivity conditions and may affect subsequent resin bonding. this in vitro study investigated the effect of cpp-acp on the shear bond strength of dental adhesives to enamel. materials and methods: sixty extracted human molar teeth were selected and randomly...

Maryam Zare Jahromi, Parvin Mirzakouchaki, Sanaz Mirsatari, Shadi Kazemi,

Background and Aim: Considering the increasing use of antibiotics in root canal therapy and the possible effects of intracanal medicaments on the bond strength of composite restorations, the aim of this study was to evaluate the effect of triple antibiotic paste (TAP) on shear bond strength of three types of composite resins to dentin. Materials and Methods: In this in-vitro, experimental st...

Effects of annealing treatment after equal channel angular pressing (ECAP) on the interface properties and shear bond strength of Al/Cu bimetallic rods were investigated. For the as-deformed samples, the one with two passes of ECAP indicated higher shear bond strength. Formation of a layer of intermetallic compounds after annealing treatment is confirmed. In general, by increasing annealing tem...

Journal: :Dental materials journal 2006
Nuran Yanikoglu Saip Denizoglu

In this study, we investigated the effect of different solutions--coffee, tea, Turkish coffee, artificial saliva, mouthwash, denture cleanser, and distilled water--on the bond strength of soft lining materials (one acrylic- and three silicone-based) to acrylic resin. Acrylic specimens (40x10x10 mm) were prepared for the bond strength test. The specimens were stored in different solutions and te...

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