نتایج جستجو برای: interlayer bond strength testing device

تعداد نتایج: 1230129  

Journal: :journal of dentistry, tehran university of medical sciences 0
mina biria associate professor, department of pediatric dentistry, school of dentistry, shahid beheshti university of medical sciences, tehran, iran. amir ghasemi associate professor, preventive dentistry research center, research institute of dental science, department of restorative dentistry, dental school, shahid beheshti university of medical science, tehran, iran. hassan torabzadeh associate professor, iranian center for endodontic research, research institute of dental sciences, shahid beheshti university of medical sciences, tehran, iran. arash shisheeian post graduate student, department of prosthodontics, school of dentistry, shahid beheshti university of medical sciences, tehran, iran. alireza akbarzadeh baghban associate professor, department of basic sciences, faculty of rehabilitation sciences, shahid beheshti university of medical sciences, tehran, iran.

recently, self-etching fissure sealants have been introduced to reduce technical sensitivity; however, their efficacy should be assessed. the aim of this study was to assess of the microshear bond strength of self-etching and conventional fissure sealants.thirty non-carious third molars were randomly divided into three groups (n=10). microcylinders of concise fissure sealant were bonded to prep...

Journal: :journal of dental biomaterials 0
farahnaz sharafeddin department of operative dentistry and biomaterial research center, school of dentistry, shiraz university of medical sciences, shiraz, iran farnaz farshad student research committee and department of operative dentistry, school of dentistry, shiraz university of medical sciences, shiraz, iran babak azarian tohid high school, shiraz , iran aysooda afshari student research committee, school of dentistry, shiraz university of medical sciences, shiraz, iran

statement of problem: shear bond strength (sbs) of home and office bleached enamel will be compromised by immediate application of composite restoration. antioxidant agent may overcome this problem. objectives: this in vitro study assessed the effect of green tea extract on shear bond strength of resin composite to in-office and home-bleached enamel. materials and methods: in this experimental ...

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...

ژورنال: مجله دندانپزشکی 2017

Background and Aims: Delay in light irradiance can improve the polymeric structure and mechanical properties of resin cement and uniform stress distribution. The aim of this study was to evaluate the effect of light activation modes (immediate, 5 and 10-minute delay) on the push-out bond strength of cemented fiber posts with two types of resin cements in different of root canal regions. Mate...

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...

ژورنال: مجله دندانپزشکی 2006
یوسفی, محمدحسین, دانش‌کاظمی, علیرضا , داوری, عبدالرحیم , یاسائی, صغری ,

Background and Aim: With the introduction of different bondable restorative materials in dentistry, various methods have been suggested to enhance the polymerization and shear bond strength of these materials. The aim of this study was to determine the effects of different methods of enamel conditioning on bond strength of orthodontic brackets and on the bracket/ adhesive failure mode. Material...

Journal: :iranian endodontic journal 0
kazem ashofteh yazdi behnam bolhari tohid sabetmoghaddam naghmeh meraji mohammad javad kharazifard

introduction: the purpose of this study was to compare the push-out bond strength of white proroot mineral trioxide aggregate (mta), biodentine, calcium-enriched mixture (cem) cement and endosequence root repair material (errm) putty after exposure to blood. methods and materials: a total of 96 root dentin slices with a standardized thickness of 1.00±0.05 mm and standardized canal spaces were r...

Journal: :Dental materials : official publication of the Academy of Dental Materials 2010
B Van Meerbeek M Peumans A Poitevin A Mine A Van Ende A Neves J De Munck

One often alleges that laboratory bond-strength testing cannot predict clinical effectiveness of adhesives. Major argument to sustain this claim is the wide variation in bond-strength values recorded for one specific adhesive among different research institutes worldwide. The main reason for these inconsistent bond-strength measurements is supposedly the current lack of a standard bond-strength...

Introduction: Detachment of denture teeth from denture base is one of the most common reasons for costly denture repairs .This study aimed at evaluating the bond strength of an acrylic denture tooth to polyamide injection-molded thermoplastic denture base material compared with three conventional polymethylmethacrylate (PMMA) denture base resins. Materials and Method: A total of 40 acrylic dent...

ژورنال: مجله دندانپزشکی 2016
ابراهیمی, شهرام فرزین, اسکندری‌زاده, علی, رحمانی, سعید, شادمان, نیلوفر,

Background and Aims: Slow polymerization rate in early stage of light curing process leads to higher monomers movement and entering in polymer network that cause higher mechanical properties.The aim of this study was to evaluate the effect of light activation methodes (immediate, 5 and 10 minutes delay) on the push-out bond strength of cemented fiber posts in different regions of root canal...

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