Bonding mechanisms at the interface of ceramic prosthetic materials

Hench, Larry L.; Splinter, R. J.; Allen, William C.; Greenlee, Theodore K.

doi:10.1002/jbm.820050611

Cited by 2,896 publications

(1,970 citation statements)

References 12 publications

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“…The powder had a mean particle size < 5 mm. The composition of the bioactive glass used was (in weight percentage): 45% SiO 2 , 24.5% Na 2 O, 24.5% CaO and 6% P 2 O 5 , which is the original composition of the first bioactive glass developed by Hench and co-workers in 1971 [27]. Table 1 Properties of the PDLLA foams prepared by freeze-drying a 5 wt:v% solution in DMC Density 0.102 ± 0.00Sg cm -3 Pore volume 9.5 ± 0.8cm 3 g -1 Glass transition temperature (T g ) 51°C Crystallinity 0%…”

Section: Methodsmentioning

confidence: 99%

Development and in vitro characterisation of novel bioresorbable and bioactive composite materials based on polylactide foams and Bioglass® for tissue engineering applications

et al. 2002

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Bioactive and bioresorbable composite materials were fabricated using macroporous poly(DL-lactide) (PDLLA) foams coated with and impregnated by bioactive glass (Bioglass®) particles. Stable and homogeneous Bioglasss coatings on the surface of PDLLA foams as well as infiltration of Bioglass® particles throughout the porous network were achieved using a slurry-dipping technique in conjunction with pre-treatment of the foams in ethanol. The quality of the bioactive glass coatings was reproducible in terms of thickness and microstructure. Additionally, electrophoretic deposition was investigated as an alternative method for the fabrication of PDLLA foam/Bioglass® composite materials. In vitro studies in simulated body fluid (SBF) were performed to study the formation of hydroxyapatite (HA) on the surface of PDLLA/Bioglass® composites. SEM analysis showed that the HA layer thickness rapidly increased with increasing time in SBF. The high bioactivity of the PDLLA foam/Bioglasss composites indicates the potential of the materials for use as bioactive, resorbable scaffolds in bone tissue engineering.

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Section: Methodsmentioning

confidence: 99%

Development and in vitro characterisation of novel bioresorbable and bioactive composite materials based on polylactide foams and Bioglass® for tissue engineering applications

et al. 2002

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“…Several families can be distinguished in the historical evolution of the bioactive glass investigation, beginning with the first Melt Prepared Glasses (MPGs), discovered by Hench et al in 1969 [1], followed by the bioactive Sol-Gel Glasses (SGGs) also proposed also by Hench in 1991 [2] and the most recent, glasses with ordered mesoporosity designed by Zhao and Vallet-Regi, who investigated independently and reported them for the first time in 2004 and 2006 [3,4].…”

Section: Introductionmentioning

confidence: 99%

Glasses in bone regeneration: A multiscale issue

Salinas

Vallet‐Regí

2016

Journal of Non-Crystalline Solids

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Highligths MBGs containing small amounts of Ga, Ce or Zn exhibit high in vitro bioactivity  The bioactive response is preserved after obtaining 3D scaffolds  These scaffolds are optimum candidates for bone tissue engineering applications  MBG scaffold with 4% ZnO exhibit bactericide action against S. Aureus  The effects of the extra ions is sometimes complex and needs to be investigated 2 Abstract 3D scaffolds based in mesoporous bioactive glasses (MBGs) are being widely investigated to use in bone tissue engineering (TE) applications. These scaffolds are often obtained by rapid prototyping (RP) and exhibit an array of interconnected pores in a hierarchy of sizes. The ordered mesopores network (around 4 nm in diameter), is optimal for the adsorption and release of bone inductor biomolecules, and the arrangement of macropores over 100 m facilitates the bone cell ingrowths and angiogenesis. Nevertheless MBGs composition can be varied almost infinitely at the atomic scale by including in the glass network oxides of inorganic elements with a therapeutic action. In this article the synthesis and characterization of MBG scaffolds based on the 80%SiO2-15%CaO-5%P2O5 (in mol-%) glass with substitutions up to 3.5% of Ga2O3 or Ce2O3 or 7.0% of ZnO is revisited. The substituent inclusion and the RP processing slightly decrease the surface area, the pore volume and the mesoporous order as well as their bioactive response in solutions mimicking blood plasma. However, these values still remain useful for bone TE applications. Results exhibiting the bactericide action of MBG scaffolds containing ZnO are also presented. KeywordsMesoporous bioactive glass scaffolds; Ga, Ce and Zn as therapeutical ions; bactericide capability; bone tissue engineering 3

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“…The presence of silver (Ag) peaks in the EDS pattern is due to the metal coating necessary for the analysis. A weak peak corresponding to silicon (Si) can be attributed to the presence of residual silica gel, which formed during the early stages of the bioactive process as described by Hench and co-workers [36]. XRD investigations carried out on the sample surface further confirmed the presence of HA, as reported in Figure 5.…”

Section: Xrd Investigationsmentioning

confidence: 57%

“…Figure 6a shows the surface of TT-FaGC after soaking for seven days in SBF; the corresponding EDS pattern is reported in Figure 6b. The sample surface is still coated by a silica-gel layer: its presence is revealed by the compositional analysis (an intense peak for Si is visible in Figure 6b) and its typical "clump-like" morphology is due to the condensation of Si-OH groups (stage 3 of the bioactivity mechanism [36,37]). Small globular agglomerates, rich in Ca and P, are visible on the top of the silica-rich layer: their presence demonstrates that the CaO-P 2 O 5 -rich film formed on the top of the gel layer begins to crystallize (stages 4 and 5 of the bioactive process [38]).…”

Section: Physical and Mechanical Characterizationsmentioning

confidence: 99%

Production and Characterization of Glass-Ceramic Materials for Potential Use in Dental Applications: Thermal and Mechanical Properties, Microstructure, and In Vitro Bioactivity

Baino

Verné

2017

Applied Sciences

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Abstract:Multicomponent silicate glasses and their corresponding glass-ceramic derivatives were prepared and tested for potential applications in dentistry. The glasses were produced via a melting-quenching process, ground and sieved to obtain fine-grained powders that were pressed in the form of small cylinders and thermally treated to obtain sintered glass-ceramic samples. X-ray diffraction investigations were carried out on the materials before and after sintering to detect the presence of crystalline phases. Thermal analyses, mechanical characterizations (assessment of bending strength, Young's modulus, Vickers hardness, fracture toughness), and in vitro bioactivity tests in simulated body fluid were performed. On the basis of the acquired results, different potential applications in the dental field were discussed for the proposed glass-ceramics. The use of such materials can be suggested for either restorative dentistry or dental implantology, mainly depending on their peculiar bioactive and mechanical properties. At the end of the work, the feasibility of a novel full-ceramic bilayered implant was explored and discussed. This implant, comprising a highly bioactive layer expected to promote osteointegration and another one mimicking the features of tooth enamel, can have an interesting potential for whole tooth substitution.

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Bonding mechanisms at the interface of ceramic prosthetic materials

Cited by 2,896 publications

References 12 publications

Development and in vitro characterisation of novel bioresorbable and bioactive composite materials based on polylactide foams and Bioglass® for tissue engineering applications

Development and in vitro characterisation of novel bioresorbable and bioactive composite materials based on polylactide foams and Bioglass® for tissue engineering applications

Glasses in bone regeneration: A multiscale issue

Production and Characterization of Glass-Ceramic Materials for Potential Use in Dental Applications: Thermal and Mechanical Properties, Microstructure, and In Vitro Bioactivity

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