نتایج جستجو برای: bonding strength

تعداد نتایج: 245343  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

abstract the influence of cation?? and anion?? interactions on the strength and nature of n…h hydrogen bond has been investigated by quantum chemical calculations in s-triazine…3hf complex. ab initio calculations were performed at mp2/6-311++g(d,p) level of theory. the natural bond orbital (nbo) analysis and the bader’s quantum theory of atoms in molecules (aim) were also used to elucidate t...

Journal: :journal of dentistry, tehran university of medical sciences 0
narges panahandeh hassan torabzadeh amir ghassemi mina mahdian alireza akbarzadeh bagheban seddigheh moayyedi

objectives : this experimental study evaluated the effect of bonding application time on the microshear bond strength of composite resin to different types of glass ionomer cements (gics). materials and methods: one-hundred and sixty specimens (two conventional and two resin-modified gics) were prepared and divided into 16 groups. the surface of all specimens was prepared using two different bo...

Javan, Mehdi, Kalalipoor, Maryam, Seyyedan, Kaveh,

Silane and bonding of Resins to Ceramic Dr. K. Seyyedan* - Dr. M. Kalalipoor** - Dr. M. Javan***Assistant Professor of Fixed Prosthodontics Dept., Faculty of Dentistry, Shaheed Beheshti University of Medical Sciences. **Resident of Fixed Prosthodontics Dept., Faculty of Dentistry, Shaheed Beheshti University of Medical Sciences. Background and Aim: When bonding between two different dental mate...

Mohammadi Bassir, Mahshid, Paryab, Mehrsa, Rezvani, Mohammadbagher,

The effect of antioxidant agents on shear bond strength of composite and bleached enamel Dr. M. Mohammadi Bassir * - Dr. MB. Rezvani * - Dr. M. Paryab ** *Assistant Professor of Operative Dentistry Dept., Faculty of Dentistry, Shahed University. **Resident of Pediatric Dentistry Dept., Faculty of Dentistry, Tehran University / Medical Sciences. Abstract Background and Aim: Several studies have ...

Journal: :journal of dentistry, tehran university of medical sciences 0
beheshteh malekafzali associate professor, department of pedodontics, shahid beheshti university of medical science dental school, tehran, iran. amir ghasemi hassan torabzadeh reza hamedani nekoo tadayon

multiple adhesive coating is a controversial topic, especially in primary dentition that should be clarified. we evaluated the effect of multiple consecutive adhesive resin coatings on the microshear bond strength (μsbs) of composite resin to primary tooth dentin utilizing a filled (adper single bond plus) and an unfilled (adper single bond) adhesive resin.thirty extracted primary canines were ...

Journal: :journal of dentistry, tehran university of medical sciences 0
hossein afshar associate professor, dental research center dentistry research institute, department of pediatric, faculty of dentistry, tehran university of medical sciences, tehran, iran. yahya baradaran nakhjavani associate professor, dental research center dentistry research institute, department of pediatric, faculty of dentistry, tehran university of medical sciences, tehran, iran. sedighe rahro taban associate professor, department of oral and maxillofacial pathology, faculty of dentistry, tehran university of medical sciences, tehran, iran. zahra baniameri assistant professor, department of pediatric, faculty of dentistry, golestan university of medical sciences, golestan, iran. azam nahvi associate professor, department of pediatric, faculty of dentistry, mazandaran university of medical sciences, sari, iran.

this in-vitro study sought to assess the push-out bond strength of a total etch and 2 self-etch bonding systems to intracanal dentin of primary anterior teeth (pat).thirty-six primary anterior teeth were randomly divided into 3 groups of 5(th) generation (single bond 2), 6(th) generation (clearfil se) and 7(th) generation (single bond universal) bonding agents. the canal orifice was restored wi...

Journal: :نشریه دانشکده فنی 0
علی حقیری مصطفی کتابچی نادر پروین

copper–silver bimetallic strips were produced by cold roll welding process and were treated by diffusion annealing in the temperature range 250–800 ?c. the interface bonding strength was determined by bending and peeling tests, resistance, conductivity and micro hardness profiles were determined and microstructure in the interface region was observed by optical microscope. electrical resistance...

ژورنال: مجله دندانپزشکی 2005
ملکان, الهه , یاسینی, اسماعیل ,

Statement of Problem: The use of dentine bondings on enamel and dentin in total etch protocols has recently become popular. Unfilled resin is hydrophobic and dentin bonding is hydrophilic in nature. This chemical difference could be effective in enamel bonding process. Purpose: The aim of this study was to compare the shear bond strength of unfilled resin to dry enamel and dentin bonding to dry...

Journal: :journal of dentistry, tehran university of medical sciences 0
maryam khoroushi associate professor, dental materials research center and department of of operative dentistry, school of dentistry, isfahan university of medical sciences, isfahan, iran. mojgan rafizadeh torabinejad dental research center, school of dentistry, isfahan university of medical sciences, isfahan, iran. pouran samimi associate professor, dental materials research center and department of of operative dentistry, school of dentistry, isfahan university of medical sciences, isfahan, iran.

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 ...

Barakatin, Mehrdad, Farjampour, Paria, Malekypour, Mohammad Reza,

Shear bond strength of dentin bonding agents to coronal and radicular dentin Dr. M. Barakatin * - Dr. MR. Malekypour * - Dr. P. Farjampour ** *Assistant Professor of Operative Dentistry & Dental Materials Dept., Faculty of Dentistry, Azad University (Khorasgan). ** Dentist. Abstract Background and Aim: The purpose of this study was to compare the shear bond strength of three bonding agents know...

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