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Introduction''To be pregnant is to be vitally alive, thoroughly woman, and undoubtedly inhabited''. 1 Greek philosopher Aristotle 2 believed that, happiness is the central purpose of human life and existence, and that one's virtues lead to happiness. He, thus, defines happiness as ''. . .the function of man is to live a certain kind of life, and this activity implies a rational principle, and the function of a c l i n i c a l e p i d e m i o l o g y a n d g l o b a l h e a l t h 3 ( 2 0 1 5 ) 1 1 7 -1 2 4 a r t i c l e i n f o Article history:

The electrochemical behavior of pure titanium and titanium alloys in a simulated body fluid (normal saline solution) has been tested, and the results have been reported. The significance of the results for dental use has been discussed. The tests also serve as a screening test for the best alloy system for more comprehensive long-term investigations.