title: Enhancement of valve metal osteoconductivity by one-step hydrothermal treatment.
abstract: In this study, we produced super-hydrophilic surfaces of valve metals (Ti, Nb, Ta and Zr) by one-step hydrothermal treatment. Their surface characteristics and osteoconductivity using an in vivo test were then assessed. These data were compared with that of as-polished, as-anodized and both anodized+hydrothermally treated samples. Changes in surface chemistry, surface morphology and structure were investigated by X-ray photoelectron spectroscopy, scanning electron microscopy, and X-ray diffractometry. The results revealed that the water contact angles of valve metals were decreased by hydrothermal treatment and continued to reduce dramatically until lower than 10° after being immersed in phosphate buffered solution. By producing super-hydrophilic surfaces, the osteoconductivity of these hydrothermally treated valve metals was enhanced by up to 55%.
authors: Department of Materials Science & Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Japan; Department of Mechanical Engineering, Manado State University (UNIMA), Indonesia. Electronic address: mzuldesmi@yahoo.com.
authors: Mansjur
authors: M
authors: Zuldesmi
authors: Department of Materials Science & Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Japan.
authors: Atsushi
authors: A
authors: Waki
authors: EcoTopia Science Institute, Nagoya University, Nagoya, Japan.
authors: Kensuke
authors: K
authors: Kuroda
authors: EcoTopia Science Institute, Nagoya University, Nagoya, Japan.
authors: Masazumi
authors: M
authors: Okido
mesh_terms: D000818:Animals; D001861:Bone Regeneration / Q000187:drug effects*; D018786:Bone Substitutes / Q000737:chemistry* / Q000494:pharmacology; D001842:Bone and Bones / Q000166:cytology / Q000601:surgery; D057927:Hydrophobic and Hydrophilic Interactions; D008297:Male; D010006:Osteoblasts / Q000187:drug effects; D019736:Prostheses and Implants; D051381:Rats; D017207:Rats, Sprague-Dawley; D013499:Surface Properties; D028561:Transition Elements / Q000737:chemistry* / Q000494:pharmacology; D014867:Water; D014961:X-Ray Diffraction
chemical_list: D018786:Bone Substitutes; D028561:Transition Elements; D014867:Water
keywords: Hydrothermal; In vivo; Osteoconductivity; Super-hydrophilic; Valve metals