Abstract：
:The influence of processing-introduced flaws and heat treatment on the strength degradation of the dental core material has recently been observed. However, there are insufficient studies which investigate the role of grinding, grinding orientation, sandblasting, polishing and heat treatment on the strength of In-Ceram Alumina (IA), one of the most used glass-infiltrated alumina-reinforced dental core ceramics. To address these issues, the uniaxial flexural strength and reliability of eight groups of specimens (sandblasted, ground parallel to the tensile axis, ground perpendicular, and polished with and without heat treatment) were assessed. Statistical analyses indicate that heat treatment significantly improved the flexural strength of the material regardless of the surface treatment. Conversely, any surface treatment caused strength degradation, if it was not followed by heat treatment. Sandblasting caused the most marked strength degradation. Polishing alone (without heat treatment) did not strengthen the ceramic. The orientation of grinding in respect of the direction of the tensile stresses did not influence the ultimate tensile strength. The present study suggests that, in the case of IA, sandblasting, grinding and polishing should always be followed by heat treatment in order to avoid strength degradation of the material.
journal_name
Biomaterialsjournal_title
Biomaterialsauthors
Guazzato M,Albakry M,Quach L,Swain MVdoi
10.1016/j.biomaterials.2003.08.056keywords:
subject
Has Abstractpub_date
2004-05-01 00:00:00pages
2153-60issue
11eissn
0142-9612issn
1878-5905pii
S0142961203007142journal_volume
25pub_type
杂志文章相关文献
BIOMATERIALS文献大全abstract：:This study aimed to investigate certain processes of fluoride production which enable glass ionomer cements to leach fluoride. Two fluoroaluminosilicate glasses, G338 and LG26 were used. The free and total fluoride which could be dissolved from the glasses was measured, before and after acetic acid washing. Both glass...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/s0142-9612(01)00352-0
更新日期：2002-05-01 00:00:00
abstract：:Carbon nanotube (CNT) possesses excellent properties as a drug carrier. To overcome the challenge of drug functionalization with CNT, we have developed a lipid-drug approach for efficient drug loading onto CNT, in which a long chain lipid molecule is conjugated to the drug molecule so that the lipid-drug can be loaded...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/j.biomaterials.2013.09.007
更新日期：2013-12-01 00:00:00
abstract：:Retinal degeneration impairs the vision of millions in all age groups worldwide. Increasing evidence suggests that the etiology of many retinal degenerative diseases is associated with impairment in biochemical reactions involved in the visual cycle, a metabolic pathway responsible for regeneration of the visual chrom...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/j.biomaterials.2014.12.019
更新日期：2015-03-01 00:00:00
abstract：:To evaluate the biocompatibility of chemically and structurally modified polyurethane elastomers for use as blood vessel replacements, small squares of vascular prostheses were cultured in direct contact with endothelium from chick embryo aorta using an organotypic culture assay. The polyurethane materials tested were...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/0142-9612(92)90051-o
更新日期：1992-01-01 00:00:00
abstract：:In vitro solubility tests of hydroxyapatite, tetracalcium phosphate or tricalcium phosphate particles were performed in lactate, citrate, Gomoris or Michaelis buffer with pH 6.2 or 7.2 and in aqua destillata. The results showed that in general the solubility decreased in the order tetracalcium phosphate greater than t...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/0142-9612(90)90067-z
更新日期：1990-09-01 00:00:00
abstract：:Canonical transient receptor potential channel 6 (TRPC6) can play an important role in governing how cells perceive the surrounding material environment and regulate Ca(2+) signaling. We have designed a TRPC6 reporter based on fluorescence resonance energy transfer (FRET) to visualize the TRPC6-mediated calcium entry ...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/j.biomaterials.2013.12.030
更新日期：2014-03-01 00:00:00
abstract：:The pore architecture in 3-D polymeric scaffoldings plays a critical role in tissue engineering as it provides the framework for the seeded cells to organize into a functioning tissue. In the present paper, we investigate the effect of freezing regime on the pore microstructure in 3-D alginate scaffolds, fabricated by...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/s0142-9612(02)00146-1
更新日期：2002-10-01 00:00:00
abstract：:In order to assess the suitability of polymer tissue scaffolds for use in regenerative medicine, methods to characterise scaffolds are needed. This requires the scaffold's structure to be determined for which X-ray microscopic computed tomography (X-ray micro CT) is widely used. However, because scaffolds are generall...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/j.biomaterials.2009.04.035
更新日期：2009-09-01 00:00:00
abstract：:Local signals from tissue-specific extracellular matrix (ECM) microenvironments, including matrix adhesive ligand, mechanical elasticity and micro-scale geometry, are known to instruct a variety of stem cell differentiation processes. Likewise, these signals converge to provide multifaceted, mechanochemical cues for h...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/j.biomaterials.2015.04.036
更新日期：2015-08-01 00:00:00
abstract：:Biodegradable tissue engineering scaffolds are commonly fabricated from poly(lactide-co-glycolide) (PLGA) or similar polyesters that degrade by hydrolysis. PLGA hydrolysis generates acidic breakdown products that trigger an accelerated, autocatalytic degradation mechanism that can create mismatched rates of biomateria...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/j.biomaterials.2014.01.026
更新日期：2014-04-01 00:00:00
abstract：:G-rich oligonucleotides tend to fall into kinetically trapped unstable structures because of their conformational polymorphism. Nucleic acid chaperones accelerate association of nucleic acids assemblies into the thermodynamically most stable conformations by decreasing the energy barrier for breakage or re-assembly of...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/j.biomaterials.2011.06.056
更新日期：2011-10-01 00:00:00
abstract：:The coupling of specific antibodies to imaging agents often improves imaging specificity. However, free amine groups designed for the coupling can cause nonspecific binding of the imaging agents. We report here development of a nanocarrier, MnMEIO-silane-NH2-mPEG nanoparticles (NPs), consisting of a manganese-doped ir...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/j.biomaterials.2013.02.025
更新日期：2013-05-01 00:00:00
abstract：:Implanted materials, such as medical devices, provoke the body to initiate an inflammatory reaction, known as the foreign body reaction (FBR), which causes several complications for example in hip prostheses, silicone implants, peritoneal dialysis catheters and left ventricular assist devices. FBR is initiated by macr...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/j.biomaterials.2007.10.041
更新日期：2008-03-01 00:00:00
abstract：:Envelope, capsid and nucleic acids are key viral components that are all involved in crucial events during virus infection. Thus simultaneous labeling of these key components is an indispensable prerequisite for monitoring comprehensive virus infection process and dissecting virus infection mechanism. Baculovirus was ...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/j.biomaterials.2016.04.038
更新日期：2016-08-01 00:00:00
abstract：:We report a new template-directed method for the fabrication of hydroxyapatite (HAp) sponges by using amino-acid-coated HAp nanoparticles dispersed within a viscous polysaccharide (dextran sulfate) matrix, and describe the use of these materials for the viability and proliferation of human bone marrow stromal cells. T...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/j.biomaterials.2005.04.037
更新日期：2005-11-01 00:00:00
abstract：:The purpose of this study was to determine the mechanical properties and the atomistic structures of various gelatin hydrogels as a preliminary to using these in bioengineering applications. The hydrogels were investigated as neat materials and as particulate-reinforced composites both in the as-formed state and follo...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/s0142-9612(02)00274-0
更新日期：2003-01-01 00:00:00
abstract：:In the traditional Chinese medicine, Gu-Sui-Bu [Drynaria fortunei (kunze) J. Sm] has been reported as a good enhancer for bone healing. In this experiment, we investigate the biochemical effects of this traditional Chinese medicine on the bone cells culture. Different concentrations of crude extract of Gu-Sui-Bu were ...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/s0142-9612(02)00038-8
更新日期：2002-08-01 00:00:00
abstract：:Two new absorbable monofilament suture materials polydioxanone and Maxon are being employed increasingly in abdominal surgery because of increased strength retention and decreased tissue reactivity compared with previously available materials. As part of our investigation of the behaviour of suture materials, 3-0 sutu...
journal_title：Biomaterials
pub_type： 杂志文章
doi：
更新日期：1990-01-01 00:00:00
abstract：:A amphiphilic block copolymer composed of conventional monomethoxy (polyethylene glycol)-poly (d,l-lactide-co-glycolide)-poly (l-lysine) (mPEG-PLGA-b-PLL) was synthesized. The chemical structure of this copolymer and its precursors was confirmed by Fourier Transform Infrared Spectroscopy (FTIR), (1)H Nuclear Magnetic ...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/j.biomaterials.2012.02.041
更新日期：2012-06-01 00:00:00
abstract：:Osteoarthritis (OA) is a progressively degenerative disease that is accompanied by articular cartilage deterioration, sclerosis of the underlying bone and ultimately joint destruction. Although therapeutic medicine and surgical treatment are done to alleviate the symptoms of OA, it is difficult to restore normal carti...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/j.biomaterials.2015.09.040
更新日期：2016-01-01 00:00:00
abstract：:The aim of the present study was to test the hypothesis that oligonucleotides can be used for anchorage and slow release of osteogenic growth factors such as BMP to enhance the osteogenic activity of a titanium implant surface. Strands of 60-mer non-coding DNA oligonucleotides (ODN) were bound to an acid-etched sandbl...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/j.biomaterials.2011.10.027
更新日期：2012-02-01 00:00:00
abstract：:Tissue engineering therapies targeted at nerve regeneration in spinal cord injuries (SCI) have broad social and economic benefits to the American population. Due to the complicated pathophysiology of SCI, there are very few options available for functional regeneration of the spinal column. Nanotechnology offers inter...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/j.biomaterials.2010.01.084
更新日期：2010-05-01 00:00:00
abstract：:The purpose of this research was to develop porous poly(D,L-lactide-co-glycolide) (PLGA) scaffolds from which ascorbate-2-phosphate (AsAP) and dexamethasone (Dex) are continuously released for a month for osteogenesis of mesenchymal stem cells for bone tissue engineering. Porous PLGA matrices containing AsAP and Dex w...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/s0142-9612(03)00358-2
更新日期：2003-11-01 00:00:00
abstract：:Enterococcus faecalis is an opportunistic pathogen, which today represents one of the leading aetiologic agents of nosocomial infections and, increasingly, of implant infections. Here, in a collection of 43 E. faecalis isolated from implant orthopaedic infections, virulence-related phenotypes (biofilm and gelatinase p...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/j.biomaterials.2007.10.008
更新日期：2008-02-01 00:00:00
abstract：:The recreation of an in vitro microenvironment to understand and manipulate the proliferation and migration of invasive breast cancer cells may allow one to put a halt to their metastasis capacity. Invasive cancer cells have been linked to embryonic stem (ES) cells as they possess certain similar characteristics and g...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/j.biomaterials.2011.02.035
更新日期：2011-06-01 00:00:00
abstract：:Islet transplantation is considered the most promising treatment for type 1 diabetes. However, the clinical success is limited by islet dysfunction in long-term culture. In this study, we have utilized the rapid self-gelation and injectability offered by blending of mulberry silk (Bombyx mori) with non-mulberry (Anthe...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/j.biomaterials.2018.09.037
更新日期：2018-12-01 00:00:00
abstract：:The long-term behaviour of cellulose sponge implants, 10 x 10 x 5 mm in size, and tissue reactions in and around them were examined in the subcutaneous tissue of the rat from 1 to 60 weeks after implantation. The cellulose sponge used was filled up with connective tissue 4 to 8 weeks after implantation. Histologically...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/s0142-9612(99)00094-0
更新日期：1999-11-01 00:00:00
abstract：:The contraction of connective tissue cells may facilitate their production and maintenance of extracellular matrix architecture and can benefit healing through wound closure. However, aberrant cell contraction can result in pathological contracture. Implants may stimulate this process leading to contracture of the sur...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/s0142-9612(00)00062-4
更新日期：2000-09-01 00:00:00
abstract：:Two kinds of micelles containing Rhodamine B were prepared by a solvent evaporation method. One (Lac-f-micelles: lactose-free micelles) was from a Rhodamine-containing copolymer, poly(ethylene glycol)-b-poly(l-lactide-co-2,2-dihydroxylmethyl-propylene carbonate/Rhodamine) [PEG(5000)-b-P(LA(4000)-co-DHP(600)/Rhodamine)...
journal_title：Biomaterials
pub_type： 杂志文章
doi：10.1016/j.biomaterials.2009.12.019
更新日期：2010-03-01 00:00:00
abstract：:Impaction grafting using morsellised allograft bone restores bone stock, but carries the potential for transmission of infection. Synthetic bone graft substitutes can eliminate this risk but may, however, influence outcome. In this study we tested the hypothesis that a 50/50 mix of hydroxyapatite and allograft does no...
journal_title：Biomaterials
pub_type： 临床试验,杂志文章
doi：10.1016/j.biomaterials.2008.12.035
更新日期：2009-03-01 00:00:00
