[Influence of surface modification of titanium on OPG/RANKL mRNA expression in MG-63 human osteoblast-like cells].

Objective: To investigate the influence of surface modification of titanium on OPG/RANKL mRNA expression in human osteoblast-like cells.

Methods: MG-63 osteoblast-like cells were seeded on the titanium plates with surface polishing and with surface modification by sandblasting plus acid-base treatment, with the cells on glass slides as the control. On days 2, 4, 6, and 8 following cell seeding, the cells were harvested for examination of OPG/RANKL mRNA expression using RT-PCR and real-time PCR.

[Influence of zirconia content on translucency of zirconia-toughened alumina glass-infiltrated ceramic].

Objective: The objective of this study is to investigate the influence of zirconia content which is 0-30.0% weight percentage of matrix on translucency of zirconia-toughened alumina glass-infiltrated ceramics.

Methods: Seven groups were divided according to different weight percentage of zirconia (0, 2.

[Observation on osteoblasts responded to fluid induced shear cultured on different surfaces with scanning electron microscope].

Objective: To investigate morphological change of osteoblasts cultured on titanium plates with different microarchitecture structure when exposured to fluid shear stress.

Methods: 14 dynes x cm(-2) fluid shear stress was applied on osteoblasts cultured on 3 different commercially pure titanium plates: Polished treatment (PT), sandblast (SB), sandblasting and acid-base (SB-AB) surfaces. Scanning electron microscope (SEM) was adopted to observe the morphological changes after 0.

[Characterization and antibacterial effect of Ag-nHA-nTiO2/polyamide 66 nanocomposite membrane on oral bacteria].

Objective: Undried silver-hydroxyapatite-titania (Ag-nHA-nTiO2) nanoparticles slurry was used to make membrane with polyamide 66 (PA66) by co-polymerization method. The purpose of this study is to test the physical and chemical characteristics and antibacterial ability.

Methods: The morphology, chemical components and structures of the membrane were characterized by atomic absorption spectrometer (AAS), X-ray diffraction (XRD), scanning electron microscope (SEM) and energy-dispersive X-ray analysis (EDX).

[Investigation of the function of the glass colorant on the machinable infiltrated ceramics color].

Objective: To investigae the function of the glass colorant on the color of the machinable infiltrated ceramics(MIC).

Methods: Five kinds of glass with different colorant were infiltrated through the aluminous matrix by heating the components to 1 100 degrees C for 2 hours. The specimens surface was polished, and their thickness was 0.

[Experimental study of periosteal osteoblasts adhesion to artificial bone scaffolds based on rapid prototype].

Objective: To study the biocompatibility of bone engineering scaffolds designed and fabricated by CAD and Rapid Prototyping techniques.

Methods: Infant rat calvarias osteoblasts were isolated and expanded in vitro and the cells (2nd passage) were seeded onto scaffolds with porosity 80%, 90%, 95% at a density of 2.06 x 10(9)/L.