نتایج جستجو برای: Shear Bond Strength Test

تعداد نتایج: 1109635  

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...

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...

Journal: :journal of dentistry, tehran university of medical sciences 0
m.s. a. akhoundi f. mojtahedzadeh

bonding brackets to the enamel surface has gained much popularity today. new adhesive systems have been introduced and marketed and a considerable increase in research regarding bond strength has been published. a considerable amount of these studies deal with shear bond strength of adhesives designed for orthodontic purpose. previous studies have used variety of test designs. this diversity in...

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...

Journal: :galen medical journal 0
ali nozari department of pediatric dentistry, dental school, shiraz university of medical sciences, shiraz, iran ali heidari student research committee, dental school, shiraz university of medical sciences, shiraz, iran ebrahim azimi student research committee, dental school, shiraz university of medical sciences, shiraz, iran azade rafiee department of pediatric dentistry, dental school, shiraz university of medical sciences, shiraz, iran

background: esthetic demands among patients have led to the introduction of tooth-colored restorations. composite resins bond to enamel applying acid etch technique. total etch adhesion systems are still considered as golden standard among bonding systems. however, clinicians have tendency towards using adhesive systems with a simplified application procedure. the aim of the present study is to...

Journal: :journal of lasers in medical sciences 0
parisa parhami school of dentistry, tehran university of medical sciences, tehran, iran seyed jalal pourhashemi department of pediatric dentistry, school of dentistry, tehran university of medical sciences, tehran , iran mehdi ghandehari department of pediatric dentistry, school of dentistry, tehran university of medical sciences, tehran , iran ghasem mighani department of pediatric dentistry, school of dentistry, tehran university of medical sciences, tehran , iran nasim chiniforush laser research center of dentistry (lrcd), school of dentistry, tehran university of medical sciences, tehran, iran

introduction :the aim of this study was to evaluate and compare the in vitro effect of the erbium-doped yttrium aluminum garnet (er:yag) laser with different radiation distances and high-speed rotary treatment on the shear bond strength of flowable composite to enamel of human permanent posterior teeth . methods : freshly extracted human molar teeth with no caries or other surface defects were ...

Journal: :dental research journal 0
farzaneh shirani reza birang mohammad reza malekipour zahra hourmehr shantia kazemi

background: dental surfaces prepared with different er:yag laser distance may have different characteristics compared with those prepared with conventional instruments. the aim of this study was to investigate the effect of er:yag laser irradiation distance from enamel and dentin surfaces on the shear bond strength of composite with self-etch and etch and rinse bonding systems compared with con...

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...

Journal: :journal of lasers in medical sciences 0
ayoub pahlavan department of operative dentistry, school of dentistry, tehran university of medical sciences, tehran, iran mobin mehmanchi dental students’ research center, school of dentistry, tehran university of medical sciences, tehran, iran. ladan ranjbar omrani department of operative dentistry and dental research center, school of dentistry, tehran university of medical sciences, tehran, iran. nasim chiniforush laser research center of dentistry, school of dentistry, tehran university of medical sciences, tehran, iran.

introduction: the aim of this study was to assess shear bond strength of composite to dentin after air abrasion and laser treatment. methods: 40 human extracted molars divided into 4 groups (n=10) received the following treatments. group 1: carbide bur, group 2: air abrasion with aluminum oxide 50 μm, group 3: irradiated with erbium-doped yttrium aluminum garnet (er: yag) laser (150 mj/20hz), g...

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...

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