نتایج جستجو برای: shear bond strength

تعداد نتایج: 328414  

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...

ژورنال: مجله دندانپزشکی 2008
شهابی, حامد, شیرانی, فرزانه, مالکی‌پور, محمد رضا,

Background and Aim: As composite-dentin bond strength is affected by cavity preparation and the bond strength of composite resin to new and used bur prepared dentin has not yet been evaluated, this study evaluated the effects of cutting dentin with different cutting efficacy (new and used) of burs on composite-dentin shear bond strength using self-etching primer bonding system and total etching...

Journal: :journal of dentistry, tehran university of medical sciences 0
javad chalipa assistant professor, department of orthodontics, tehran university of medical sciences, tehran, iran. mohammad sadegh ahmad akhondi professor, dental research center, dentistry research institute, department of orthodontics, tehran university of medical sciences, tehran, iran. sepideh arab assistant professor, department of orthodontics, qazvin university of medical sciences, qazvin, iran. mohammad javad kharrazifard post graduated student of epidemiology, dental research center, tehran university of medical sciences, tehran, iran. maryam ahmadyar general dental practitioner, tehran, iran.

the purpose of this study was to evaluate the shear bond strength (sbs) of orthodontic brackets bonded with two types of nano-composites in comparison to a conventional orthodontic composite.sixty extracted human first premolars were randomly divided into 3 groups each containing 20 teeth. in group i, a conventional orthodontic composite (transbond xt) was used to bond the brackets, while two n...

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...

Introduction: In orthodontic treatment, it is essential to establish a satisfactory bond between enamel and bracket. After the self-etch primers (SEPs) were introduced for the facilitation of bracket bonding in comparison to the conventional etch-and-bond system, multiple studies have been carried out on their shear bond strengths which have yielded different results. This study was aimed at co...

Journal: :journal of dentistry, tehran university of medical sciences 0
zahra bahrololoomi associate professor, department of pedodontics, member of social determinants of oral health research center, faculty of dentistry, shahid sadoughi university of medical sciences, yazd, iran mona kabudan pedodontist leila gholami assistant professor, department of periodontics, faculty of dentistry, zahedan university of medical sciences, zahedan, iran

o bjectives: bond strength of composite resin to enamel and dentin of primary teeth is lower than that to permanent teeth; therefore, it may compromise the ad- hesive bonding. new methods, such as laser application have been recently intro- duced for tooth preparation. the purpose of this study was to evaluate the effect of tooth preparation with bur and er:yag laser on shear bond strength of c...

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...

Esmail Yasini, Ladan Ranjbar Omrani, Mansoureh Mirzaee, Mohammad Javad Kharrazifard, Nasim Chiniforush, Paniz Fasih, Shiva Rafiezadeh,

Background and Aim: Preparation of tooth structure by laser systems produces a surface with different characteristics. Therefore, selecting an appropriate bonding system is necessary to achieve the maximum bond strength. The aim of this study was to compare the bond strength of Adper Single Bond 2 adhesive and Single Bond Univer-sal to dentin prepared by bur or laser. Materials and Methods: ...

Journal: :journal of dentistry, tehran university of medical sciences 0
zahra jaberi ansari associate professor, department of operative dentistry, dental school, shahid beheshti university of medical sciences, tehran, iran. narges panahandeh assistant professor, department of operative dentistry, dental school, shahid beheshti university of medical science, tehran, iran. zahra sadat tabatabaei shafiei dentist, department of basic sciences, faculty of rehabilitation sciences, 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.

adequate bond strength between glass ionomer cements and composite resin is necessary for the success of the sandwich technique.this study assessed the micro-shear bond strength of composite resin to glass-ionomer cements (gic) using self-etch adhesives with different ph values.one hundred specimens (6×4×2 mm) were made using fuji ii and fuji ii lc gics and treated with different adhesives as f...

Journal: :journal of dentistry, tehran university of medical sciences 0
soodabeh sadat sajadi assistant professor, department of orthodontics, arak university of medical science, arak, iran. gholamreza eslami amirabadi assistant professor, department of orthodontics, dental school, shahed university, tehran, iran. sepideh sajadi assistant professor, department of endodontics, arak university of medical science, arak, iran.

bond failure of brackets during orthodontic treatment is a common problem; which results in treatment interference, increased treatment time and prolonged clinical time for rebonding of failed brackets. the purpose of this study was to evaluate the effects of coca-cola and a non-alcoholic beer on the shear bond strength and adhesive remnant index (ari) of orthodontic metal brackets in vitro.eig...

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