نتایج جستجو برای: modified glass

تعداد نتایج: 319594  

Journal: :journal of dentistry, tehran university of medical sciences 0
sumitha upadhyay specialist resident, department of pedodontics & preventive dentistry, mangalore, india. arathi rao ramya shenoy

to investigate and compare the amount of fluoride release of conventional, resin modified and nanofilled resin modified glass ionomer cements.tablets of glass-ionomer cements were immersed in deionized water and incubated at 37°c. after 1, 2, 7, 15 and 30 days, fluoride ion was measured under normal atmospheric conditions by fluoride ion selective electrode. buffer (tisab ii) was used to decomp...

Journal: :journal of dental materials and techniques 0
mostafa sadeghi professor, department of operative dentistry, school of dentistry, rafsanjan university of medical sciences, rafsanjan, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی رفسنجان (rafsanjan university of medical sciences) mohammad atafat assistant professor, department of operative dentistry, school of dentistry, rafsanjan university of medical sciences, rafsanjan, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی رفسنجان (rafsanjan university of medical sciences) mehdi abbasi assistant professor, department of operative dentistry, school of dentistry, rafsanjan university of medical sciences, rafsanjan, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی رفسنجان (rafsanjan university of medical sciences)

background: the clinical success of sandwich technique depends on the strength of resin-modified glass ionomer cement (rmgic) bonding to both dentin and resin composite. therefore, the shear bond strength (sbs) of resin composite bonded to rmgic utilizing different resin adhesives versus a gic-based adhesive was compared. materials and methods: in this in vitro study, 84 holes (5×2 mm) were pre...

Journal: :iranian endodontic journal 0
zahed mohammadi department of endodontics, dental school, shahid sadoughi university of medical sciences, yazd, iran. [email protected] abbasali khademi department of endodontics, dental school, isfahan university of medical sciences, isfahan, iran

introduction: coronal leakage seems to play an important role in the failure of endodontic treatment. a double seal over root canal filling has been suggested as a means of improving the coronal seal. several restorative materials have been used in an attempt to produce a coronal barrier. the purpose of this study was to assess gray-coloured mineral trioxide aggregate (gmta), white-coloured min...

Journal: :journal of dentistry, tehran university of medical sciences 0
a. kowsari jh. mahmoodian t. ghavami

statement of problem: since the fluoride releases from materials with the property of releasing fluoride are decreasing gradually, it seems that probably the material rechargeability is more important than their long-term fluoride release. purpose: the objective of this study was to asses the fluoride release and rechargeability of 2 types of fluoride releasing restorative materials, a resin mo...

Journal: :مجله دانشگاه علوم پزشکی شهید صدوقی یزد 0
علیرضا دانش کاظمی ar danesh kazemi عبدالرحیم داوری ar davari حسن بیدرام گرگابی h ‍bidram - gargabi

introduction: in different investigations, the destructive effect of ultrasonic scalers on the margins of composites has been studied, but there are very few studies on the effects of ultrasonic scalers on the microleakage of poly-acid modified composite resin and resin modified glass ionomers. the main purpose of this study was to evaluate the marginal microleakage of class v preparations rest...

ژورنال: مجله دندانپزشکی 2004
برهان حقیقی, زهره, شفیعی, فرشته,

Statement of Problem: Because dental amalgam does not adhere to tooth structure, using adhesive cements in amalgam-bonded restorations have been increased. Purpose: The goal of this in-vitro study was to compare the effects of three types of glass ionomer as adhesive liners as well as varnish liner in increasing fracture resistance of teeth restored with amalgam. Materials and Methods: Seventy ...

Journal: :journal of dental research, dental clinics, dental prospects 0
amir ahmad ajami elmira jafari navimipour tabriz university of medical sciences, iran siavash savadi oskoee mehrdad lotfi mehdi abed kahnamoui mehdi daneshpooy

background and aim: present study was designed to compare the bonding strength of resin-modified glass ionomer (rmgi) and composite resin to mineral trioxide aggregate (mta), mta mixed with na2hpo4 (namta), and calcium-enriched mixture (cem). materials and methods: thirty specimens of each cem, namta, and mta were prepared. composite and rmgi restorations were then placed on the samples (15 sam...

Journal: :journal of dental biomaterials 0
najmeh mohammadi department of paediatrics, dental school, shiraz university of medical sciences, shiraz, iran maryam ferooz melbourne dental school, the university of melbourne, victoria, australia tahereh eskandarian department of paediatrics, dental school, shiraz university of medical sciences, shiraz, iran rafat bagheri department of dental materials and biomaterials research centre, dental school, shiraz university of medical sciences, shiraz, iran

abstract statement of problem: there is no enough published data about the shear bond strength of resin modified glass ionomer adhesives on caries-affected primary tooth dentin excavated using minimally invasive systems. objectives: to evaluate the shear bond strength of 2 different adhesives (one resin modified glass ionomer and one resin) using two caries removal techniques on healthy and car...

آیت اللهی, فاطمه, بهنیافر, بهناز, داوری, عبدالرحیم, موسوی, زهره,

Introduction: According to appropriate characteristics of glass ionomer cementum and constant increase of its usage in restorative field, so comparison of conventional and resin- modified glass ionomers seems to be useful. This study was designed to determine the shear bond strength of conventional and resin- modified glass Ionomers on enamel, dentin and cementum. Methods: This was an experime...

Journal: :تحقیقات نظام سلامت 0

abstract background: the aim of this study was to compare the efficiency of conventional slow sand filter with modified filter bed with crushed recycled glass in removing of turbidity and total and fecal coliforms from water resources.   methods: in this study efficiency of conventional slow sand filter and modified filter bed with crushed recycled glass during 4 months was compared and their p...

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