نتایج جستجو برای: titanium oxideboric acid

تعداد نتایج: 781357  

Journal: :Dental materials : official publication of the Academy of Dental Materials 2009
X Cui H-M Kim M Kawashita L Wang T Xiong T Kokubo T Nakamura

OBJECTIVES To research the crystal structure and surface morphology of anodic films on titanium metal in different electrolytes under various electrochemical conditions and investigate the effect of the crystal structure of the oxide films on apatite-forming ability in simulated body fluid (SBF). METHODS Titanium oxide films were prepared using an anodic oxidation method on the surface of tit...

Journal: :international journal of occupational and environment medicine 0
m ahmadimanesh pharmacology department, school of medicine, tehran university of medical sciences, tehran, iran s shadnia toxicological research center, clinical toxicology department, loghman hakim hospital poison center, faculty of medicine, shahid- beheshti university of medical sciences, tehran, iran m ghazi-khansari pharmacology department, school of medicine, tehran university of medical sciences, tehran, iran

occupational inhalation exposure to noxious agents is not uncommon. herein, we present a 26-year-old male student who had accidental acute inhalation exposure to a large quantity of titanium ethanolate and hydrogen chloride in chemistry lab. he was referred to the emergency department of our hospital with low-grade fever, dyspnea, headache, fatigue and myalgia. after 24 hrs of symptomatic treat...

Journal: :Nihon Hotetsu Shika Gakkai zasshi 2008
Teruhisa Hirayama Marie Koike Tadafumi Kurogi Akiko Shibata Shigeru Nakamura Motohiro Terano Yoshihisa Yamabe Hiroshi Murata Hiroyuki Fujii

PURPOSE The purpose of this study was to investigate the ion release from titanium casts in solutions of mixed organic acids and to reconsider the possibility of allergic reactions to titanium. METHODS Cast specimens were made from commercially pure titanium. For the immersion solutions, we prepared two types of organic acid solutions, one mixed with organic acids contained in whole stimulate...

2003
O. Zinger D. Landolt

INTRODUCTION: Titanium and titanium alloys have attracted considerable interest in aerospace, chemical process and biomedical industry due to their biocompatibility, good mechanical properties and excellent corrosion resistance. The chemical stability of titanium results from the presence of a thin but stable surface oxide film, typically a few nanometer thick. In nonaqueous electrolytes contai...

Journal: :journal of lasers in medical sciences 0
amir hossein mirhashemi dental research center, dentistry research institute, department of orthodontics, tehran university of medical sciences, tehran, iran sina hakimi azad university, tehran, iran mohammad sadegh ahmad akhoundi dental research center, dentistry research institute, department of orthodontics, tehran university of medical sciences, tehran, iran nasim chiniforush laser research center of dentistry, dentistry research institute, tehran university of medical sciences, tehran, iran

introduction: the aim of this study was to assess the caries-preventive potential of carbon dioxide (co2) laser application in conjunction with the use of titanium tetra fluoride solution on the enamel adjacent to bracket. methods: seventy-five freshly extracted bovine incisors were used. in order to attach the brackets, the area of examination was covered with adhesive tape to limit acid etchi...

Journal: :The International journal of oral & maxillofacial implants 2001
Y J Lim Y Oshida C J Andres M T Barco

The attachment of cells to titanium surfaces is an important phenomenon in the area of clinical implant dentistry. A major consideration in designing implants has been to produce surfaces that promote desirable responses in the cells and tissues. To achieve these requirements, the titanium implant surface can be modified in various ways. This research was designed to elucidate the relationship ...

Journal: :The journal of contemporary dental practice 2015
Yuri Wanderley Cavalcanti Rodrigo Villamarim Soare Marina Araújo Leite Assis Elton Gonçalves Zenóbio Francisco Mauro da Silva Girundi

UNLABELLED Some surface treatments performed on titanium can alter the composition of salivary pellicle formed on this abiotic surface. Such treatments modify the titanium's surface properties and can promote higher adsorption of proteins, which allow better integration of titanium to the biotic system. PURPOSE This study aimed to evaluate the interactions between salivary proteins and titani...

2014
Qing Qu Lei Wang Yajun Chen Lei Li Yue He Zhongtao Ding

As one of the main products produced by oral microorganisms, the role of lactic acid in the corrosion of titanium is very important. In this study, the corrosion behavior of titanium in artificial saliva with and without lactic acid were investigated by open-circuit potentials (OCPs), polarization curves and electrochemical impedance spectroscopy (EIS). OCP firstly increased with the amount of ...

2007
Richard Roest Besim Ben-Nissan

The anodization of titanium involves the formation of a thin, dense and compact, oxide layer. In this process the rutile structure of the original titanium oxide is converted into an anatase structure. It is this anatase structure and how it influences the bonding properties of the sol gel coating of hydroxyapatite (HAp) was the main aim of this research project. "he titanium samples were anodi...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2014
razieh razavi sayed mohammad ali hosseini mohammad ranjbar

titanium dioxide is widely used in the manufacturing of paints, varnishes, lacquer, paper, paperboard, printing inks, rubber, floor covering, and ceramics and so on. white titanium dioxide pigment has been produced by two main processes. the sulfate and the chloride processes. each of these two routes requires different feedstocks. however, economic and environmental pressures are shifting the ...

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