Plasma spraying induced changes of calcium phosphate ceramic characteristics and the effect onin vitro stability

Radin, S.; Ducheyne, Paul

doi:10.1007/bf00702942

Cited by 263 publications

(132 citation statements)

References 13 publications

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“…The presence of TCP and TTCP phases would enhance the resorption process of HA coating leading to implant instability. 11) In addition, the thick coatings produced by plasma spray often exhibited porosity that weakened the interfacial strength and provided an easy fracture path for adhesion failure. 11) Pores and other coating imperfections reduced the corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment on Characteristics of Plasma Sprayed Hydroxyapatite Coatings

Chen

Ding

2006

Mater. Trans.

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Bioactive hydroxyapatite (HA)-coated implants plasma sprayed on Ti6Al4V substrates have been widely used in load-bearing applications because of their biocompatibility and their intimate contact with bone. The improvement of the characteristics of HA coatings is concerned. The purpose of this work was to evaluate corrosion behavior and bond strength of HA coatings after post-deposition heat treatment at 500-700 C. The results indicated that the heat treatment led to recrystallization of amorphous calcium phosphate of as-sprayed HA coatings. The reduction of layer defects associated with plasma-sprayed coatings and the enhancement of the resistance to corrosion took place after heat treatment. Bond strength of the heat-treated coatings was sensitive to the treatment temperature. It is concluded that the heat treatment at 600C for 1 h in air, endowing with increased crystallinity and the reduced defects without significantly reduced bond strength, provided a better corrosion protection than the other two treatment temperatures.

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Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment on Characteristics of Plasma Sprayed Hydroxyapatite Coatings

Chen

Ding

2006

Mater. Trans.

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“…The use of HA coatings on titanium alloys leads to a structure that has good mechanical strength and good osteointegration properties at the surface (Lacefield, 1998). It has also been demonstrated that the bond between HA and bone is better than the bond between titanium and bone (Radin & Ducheine, 1992;Filiaggi et al, 1993).…”

Section: Bioactive Ceramic Filmsmentioning

confidence: 99%

Nanocrystalline Thin Ceramic Films Synthesised by Pulsed Laser Deposition and Magnetron Sputtering on Metal Substrates for Medical Applications

Carradò¹,

Pelletier²,

Roland³

2011

Biomedical Engineering - From Theory to Applications

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“…In an in vitro setting, it is of value to qualitatively and quantitatively analyze and observe any possible phase changes, which can possibly occur during the fabrication process or dissolution process [8,9]. In the past, there has been work done to try to interpret as well as predict the long-term effects of the dissolution of CaP ceramics.…”

Section: Introductionmentioning

confidence: 99%

Controlling calcium and phosphate ion release of 3D printed bioactive ceramic scaffolds: An in vitro study

2017

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This paper characterizes in an in vitro setting the release of calcium (Ca) and phosphate (PO 4 ) of 3D printed bioactive ceramic scaffold prepared from extrudable paste containing hydroxyapatite and β-tricalcium phosphate (β-TCP). Hydroxyapatite and β-TCP were calcined at 800 ℃ for 11 h, fabricated into four experimental groups (100% HA, 100% β-TCP, 15%/85% HA/β-TCP, and 15%/85% HA/β-TCP (design)), sintered to 1100 ℃ for 4 h. Calcium and phosphorus concentrations were evaluated using ICP spectroscopy, and the release of Ca and PO 4 ions during dissolution of the CaP-based scaffolds was measured by submerging in 0.05 mol/L Tris(hydroxymethyl)aminomethane-HCl and maintaining a temperature of 37 ℃. The Ca and PO 4 concentrations of the solutions were measured with the utilization of a calcium assay kit and a phosphate assay kit and read in a UV-visible spectrophotometer. The 100% HA scaffold group showed the greatest concentration of Ca ions (~1.9 mg/dL), but ultimately released at a lower amount as time increased; the 100% HA scaffold also showed the lowest total amount of calcium ions released over the course of evaluation. The results for the 100% β-TCP were on the opposite of the HA with the highest amount of calcium ion release over the study. While the PO 4 ion release showed a similar trend as those observed with Ca ions with an apparent difference in the 100% HA scaffold group. There was nearly 0 mg/dL of the phosphate ions released in the first 24 h, in comparison to the amount of Ca ions released during the same time frame. Since various formulations can lead to different properties of these bioactive ceramic scaffolds, it is important to understand how the tailoring of this important biphasic material can impact the long-term outcome of an ever-important in vivo clinical trial in the future.

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Plasma spraying induced changes of calcium phosphate ceramic characteristics and the effect onin vitro stability

Cited by 263 publications

References 13 publications

Effect of Heat Treatment on Characteristics of Plasma Sprayed Hydroxyapatite Coatings

Effect of Heat Treatment on Characteristics of Plasma Sprayed Hydroxyapatite Coatings

Nanocrystalline Thin Ceramic Films Synthesised by Pulsed Laser Deposition and Magnetron Sputtering on Metal Substrates for Medical Applications

Controlling calcium and phosphate ion release of 3D printed bioactive ceramic scaffolds: An in vitro study

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