https://scholar.google.com/scholar_lookup?title=Bacterial+Adhesion+on+Commercially+Pure+Titanium+and+Anatase-Coated+Titanium+Healing+Screws:+An+in+Vivo+Human+Study&author=Scarano,+A.&author=Piattelli,+A.&author=Polimeni,+A.&author=Di+Iorio,+D.&author=Carinci,+F.&publication_year=2010&journal=J.+Periodontol.&volume=81&pages=1466–1471&doi=10.1902/jop.2010.100061&pmid=20528698