نتایج جستجو برای: adhesive

تعداد نتایج: 23299  

2010
M A Khan S M Ashraf

Lignin modified phenol formaldehyde wood adhesives have been prepared by replacing phenol with the groundnut shell lignin (GNSL) at varying weight percentages. The optimization of weight percent incorporation of GNSL was carried out in respect to mechanical properties. It was found that a maximum of up to 50 wt.% of phenol in the phenol formaldehyde (PF) adhesive can be substituted by GNSL to o...

2014
Yuan Liu Hao Meng Shari Konst Ryan Sarmiento Rupak Rajachar Bruce P. Lee

A synthetic mimic of mussel adhesive protein, dopamine-modified four-armed poly(ethylene glycol) (PEG-D4), was combined with a synthetic nanosilicate, Laponite (Na(0.7+)(Mg5.5Li0.3Si8)O20(OH)4)(0.7-)), to form an injectable naoncomposite tissue adhesive hydrogel. Incorporation of up to 2 wt % Laponite significantly reduced the cure time while enhancing the bulk mechanical and adhesive propertie...

Journal: :The Journal of prosthetic dentistry 2001
S Kiat-Amnuay L Gettleman Z Khan L J Goldsmith

STATEMENT OF PROBLEM The success of most non-implant-retained extraoral prostheses depends on retention derived from skin adhesives. Part 1 of this study found that Skin-Prep Protective Dressing improved the retentive properties of adhesives and that Secure(2) Medical Adhesive was stronger than Epithane-3. Part 2 investigates the application of a second layer of adhesive to the prosthesis, whic...

BACKGROUND AND AIM: Different studies evaluating one-step self-etch (SE) adhesive systems show contradictory findings, so the aim of this study was to compare the microleakage of one-step SE adhesive systems and CLEARFIL SE BOND (that serves as the “gold-standard” SE adhesive) with low shrinkage composites. METHODS: In this in vitro study, Class V cavities with the occlusal margin in enamel and...

Journal: :journal of dental research, dental clinics, dental prospects 0
mohammad joulaei mahmoud bahari faculty of dentistry, tabriz university of medical sciences anahid ahmadi siavash savadi oskoee

background and aims. effect of surface treatments on repair bond strength of aged composite resins might be different due to their dissimilar fillers. the aim was to evaluate the effect of different surface treatments on repair micro-shear bond strength (µsbs) of silica- (spectrum tph) and zirconia-filled (filtek z250) composite resins. materials and methods. twenty-seven composite resin blocks...

Journal: :journal of dentistry, shiraz university of medical sciences 0
farahnaz sharafeddin dept. of operative dentistry, biomaterials research center, school of dentistry, shiraz university of medical sciences, shiraz, iran. hossein nouri undergraduate student, school of dentistry, shiraz university of medical sciences, shiraz, iran. fatemeh koohpeima dept. of operative dentistry, school of dentistry, shiraz university of medical sciences, shiraz, iran.

statement of the problem: monomer viscosity and solvent evaporation can be affected by the adhesive system temperature. higher temperature can elevate the vapor pressure in solution and penetration of adhesive in smear layer. bonding mechanism may be influenced by the adhesive temperature. purpose: this study aimed to evaluate the effect of pre-heating on shear bond strength of etch-and-rinse a...

Journal: :journal of lasers in medical sciences 0
maría vicente prieto dental clinic (faculty of medicine), university of salamanca. paseo universidad de coimbra, s/n, 37007, salamanca, spain ana luisa caseiro gomes dental clinic (faculty of medicine), university of salamanca. paseo universidad de coimbra, s/n, 37007, salamanca, spain javier montero martín contracted professor, dental clinic (faculty of medicine), university of salamanca. paseo universidad de coimbra, s/n, 37007, salamanca, spain alfonso alvarado lorenzo contracted professor, dental clinic (faculty of medicine), university of salamanca. paseo universidad de coimbra, s/n, 37007, salamanca, spain vicente seoane mato dental clinic (faculty of medicine), university of salamanca. paseo universidad de coimbra, s/n, 37007, salamanca, spain alberto albaladejo martínez contracted professor, dental clinic (faculty of medicine), university of salamanca. paseo universidad de coimbra, s/n, 37007, salamanca, spain

introduction: when aesthetics is compromised, dental ceramics are excellent materials for dental restorations; owing to their optical properties and biocompatibility, zirconia ceramics are particularly interesting. self-adhesive resin cements are the most suitable for bonding to zirconia ceramics, but traditional adhesive chemistry is ineffective and surface treatments are required to improve t...

Journal: :General dentistry 2015
Danielson Guedes Pontes Cintia Tereza Pimenta Araujo Lucia Trazzi Prieto Dayane Carvalho Ramos Salles de Oliveira Erick Kamiya Coppini Carlos Tadeu Santos Dias Luis Alexandre Maffei Sartini Paulillo

The aim of this in vitro study was to evaluate the nanoleakage of fiber posts luted using different adhesive strategies and to investigate the effect of 2% chlorhexidine (CHX) on nanoleakage at the resin-dentin interfaces of self-adhesive cements. The self-adhesive and etch-and-rinse adhesive groups tested demonstrated similar results with regard to nanoleakage. Pretreatment with CHX promoted a...

Journal: :The Bulletin of Tokyo Dental College 2005
Renato Herman Sundfeld Carlos Henrique de Oliveira Adriana Maria Jorge Dal'acqua da Silva André Luiz Fraga Briso Maria Lúcia Marçal Mazza Sundfeld

Length of resin tags yielded by utilization of an one-step conventional adhesive system and self-etching adhesive system on unground enamel was observed. In study Groups I and III, the enamel surface was etched for 60 seconds with 35% phosphoric acid gel and adhesive systems PQ1 (Ultradent Products, Inc) and Adper Prompt L Pop (3M/ESPE) were applied. Adper Prompt L Pop (3M/ESPE) was also applie...

2017
Bruna Gabrielle da Silva Sutil Alexandre Henrique Susin

OBJECTIVES To evaluate the effects of dentin pretreatment and temperature on the bond strength of a universal adhesive system to dentin. MATERIAL AND METHODS Ninety-six extracted non-carious human third molars were randomly divided into 12 groups (n=8) according to Scotchbond Universal Adhesive (SbU) applied in self-etch (SE) and etch-and-rinse (ER) mode, adhesive temperature (20°C or 37°C) a...

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