Structure, solubility and bond strength of thin calcium phosphate coatings produced by ion beam sputter deposition

Ong, Joo L.; Lucas, L. C.; Lacefield, William R.; Rigney, E. D.

doi:10.1016/0142-9612(92)90192-q

Cited by 200 publications

(94 citation statements)

References 12 publications

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“…Numerous deposition techniques exist for BAp membranes, such as plasma spray 15) and sputter 16) . The advantage of the PLD technique is that the composition of the membrane and the target is similar, i.e., the source of prepared membrane.…”

Section: Discussionmentioning

confidence: 99%

A novel membrane-type apatite scaffold engineered by pulsed laser ablation

et al. 2015

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Cell sheet technology is a scaffold-free method for tissue reconstruction. A sheet-shaped scaffold would be suitable for the regeneration of periodontal membrane. We designed a stem cell sheet combining human mesenchymal stromal cells (hMSCs) and a 10-µm thick biological apatite (BAp) membrane fabricated with an ArF pulsed laser ablation for periodontal regeneration. X-ray diffraction showed that crystalline hydroxyapatite (HAp) was present in BAp and HAp membranes after post-annealing. Energy dispersive analysis of the BAp membrane revealed peaks of Na and Mg in addition to Ca and P. Approximately 3×10 4 hMSCs were cultured on BAp and HAP membranes for 7 and 14 days. From in vitro assays, hMSCs grew faster and had higher osteoblast differentiation when cultured on the BAp membrane than did the cell culture on the HAp membrane. Stem cell sheets combined with a BAp membrane may have potential applications in guided bone regeneration and osteoconductive scaffolds.

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Section: Discussionmentioning

confidence: 99%

A novel membrane-type apatite scaffold engineered by pulsed laser ablation

et al. 2015

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“…HA films were prepared on silicon substrate in a dual ion beam sputtering system with a base pressure of 9x10 7 Torr. The primary ion source is an 8 cm Kaufman-type ion source used for sputtering and the secondary ion source is a 3 cm Kaufman-type ion source for ion bombardment.…”

Section: Methodsmentioning

confidence: 99%

“…The dissolution rate of crystalline HA has been observed to be very low, while that of the amorphous phase HA is considerably high [1]. Various techniques have been used to deposit calcium phosphate on metal substrates such as sputtering, electron beam deposition, laser deposition, and plasma spraying [6][7][8][9][10][11][12][13][14][15][16][17][18][19]. So far, plasma spraying is the only technique being commercialized and most widely used because of its simplicity and cost effectiveness.…”

Section: Introductionmentioning

confidence: 99%

Processing and Development of Nano-Scale HA coatings for Biomedical Application

Rabiei

Thomas

2004

MRS Proc.

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Functionally graded Hydroxyapatite coating with graded Crystallinity across the thickness of the film has been processed and tested as a more effective orthopedic/ dental implant coating. The present study aims to increase the service-life of an orthopedic/ dental implant by creating materials that form a strong, long lasting, bond with the Ti substrate as well as juxtaposed bone. The health relatedness of the new material is to increase bonding between an implant and juxtaposed bone so that a patient who has received joint or dental replacement surgery may quickly return to a normal active lifestyle. Cross-sectional transmission electron microscopy analysis displayed that the films have a graded crystal structure with the crystalline layer near the substrate and the amorphous layer at the top surface. Compositional analysis was performed using SEM-EDX at the top surface as well as STEM-EDX at the cross section of the film. The average calcium to phosphorous ratio at the surface is 1.46, obtained by SEM-EDX, The Ca/P ratios in the crystalline and amorphous layers of the film are 1.6 to 1.7, close to the ratio of 1.67 for HA. INTRODUCTIONIn order to improve the bioactivity of metal implants, Hydroxyapatite (HA: CaJ0(P0 4 )

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“…14-18) Ong et al, 14) Ding et al, 15) and Lee et al 16) evaluated the bonding strength of calcium phosphate films fabricated by ion-beam sputter deposition, RF magnetron sputtering, and electron beam evaporation with ion bombardment, respectively, using the same adherence testing 19,20) It has been pointed out that the bonding strength of a calcium phosphate coating film is influenced by heat treatments and immersion in simulated body fluids. 14,15) A study on the effect of the post-treatment of calcium phosphate coating films on the bonding strength is currently in progress. Figure 5 shows the XRD pattern of the coating film fabricated on the titanium plate substrate, which was used for evaluating ALP activity.…”

Section: In Vitro Evaluationmentioning

confidence: 99%

Evaluation of Calcium Phosphate Coating Films on Titanium Fabricated Using RF Magnetron Sputtering

et al. 2007

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Calcium phosphate coating films fabricated on commercially pure titanium (CP-Ti) substrates using radiofrequency (RF) magnetron sputtering were evaluated in vivo and in vitro for investigating their applications in dental and medical implants. For the in vitro evaluations of the calcium phosphate coating films, the bonding strength and alkaline phosphatase (ALP) activity were examined. The bonding strength of the coating films to a polished titanium plate exceeded 60 MPa. When compared with an uncoated titanium plate, the increase in the ALP activity of SaOS-2 cells (a well-characterized osteosarcoma human cell line exhibiting osteoblast-like properties) on a titanium plate coated with a calcium phosphate film was confirmed by a culture test. Titanium cylinders coated with an amorphous calcium phosphate film were implanted into the mandibles of beagle dogs. The percentage of bone-implant contact in coated titanium was greater than that in uncoated titanium.

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Structure, solubility and bond strength of thin calcium phosphate coatings produced by ion beam sputter deposition

Cited by 200 publications

References 12 publications

A novel membrane-type apatite scaffold engineered by pulsed laser ablation

A novel membrane-type apatite scaffold engineered by pulsed laser ablation

Processing and Development of Nano-Scale HA coatings for Biomedical Application

Evaluation of Calcium Phosphate Coating Films on Titanium Fabricated Using RF Magnetron Sputtering

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