Surface biochemical modification for the titanium implants / 生物医学工程学杂志

This paper reviews the progress in biochemical design and modification for the surfaces of titanium implants in recent years, the emphasis being laid on the introduction of the surface molecular construction, self-assembly technique and its application in biomedical materials.

An investigation of HAP/organic polymer composite coating prepared by electrochemical co-deposition technique (II) characterization of XRD, SEM and mechanic properties / 生物医学工程学杂志

Electrodeposition hydroxyapatite(HAP) coatings of ceramics were studied by Nano Indent. The bonding force between the coating and metal substrate was distinctly increased. The experiments about XPS and SIMS showed that there is the act of organic polymer enriching at negative. It ensues that minor organic polymer is compounded to HAP coatings at molecular level and forms that HAP/Organic polymer compound coating.

An investigation of HAP/organic polymer composite coatings prepared by electrochemical co-deposition technique / 生物医学工程学杂志

An electrochemical co-deposition technique has been developed to prepare a hydroxyapatite (HAP)/organic polymer composite coatings on Ti surface as new biomaterial of hard tissue. The composite coating of organic polymer and calcium phosphate is formed by adding a water soluble polymer of the ethylene series to NH4H2PO4-Ca (NO3)2 solution when conducting an appropriate electrochemical co-deposition experiment. The XRD, SEM, XPS, SIMS and nano indent measurements were performed to characterize the morphology, composition, structure and surface stiffness of the composite coating. It was found that the morphology and surface hardness of the coatings showed a remarkable modification when introducing a minor polymer to HAP coating, and the bonding force between the coating and metal substrate was distinctly increased. The incorporation of minor organic polymer into the HAP compound at molecular level will improve the mechanical properties and morphology of the composite coatings, and this may be helpful to raising its bio-activity.

Fluorescence properties and color space of modifying porcelains / 实用口腔医学杂志

Objective:To investigate the correlation between fluorescence emission and color difference (CIE△Eab). Methods:Color and spectral distribution in three kinds of modifying porcelains (Vita Interno, Shofu Vintage & Unibond, Noritake Super Porcelain EX-3) were measured on CIELAB color scale on Color-Eye 7000A spectrophotometer under four measuring modes. CIE△Eab were analyzed by two-way ANVOA and SNK-q test (?=0.05). Correlation analyses were also performed between CIE△Eab and the color parameters difference(?= 0.05). In addition, CIELAB color coordinate was established. Results:Fluorescence emission of Vita and Shofu, Vita and Noritake were significantly different(P