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Adsorption/desorption phenomena on pure and Teflon® AF‐coated titania surfaces studied by dynamic contact angle analysis by F. Rupp; D. Axmann; C. Ziegler; J. Geis‐Gerstorfer is a Medicine article available to read on EtoBox.

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## Abstract As a result of inflammatory processes, plaque formation on dental titanium implants often leads to clinically pathogenic situations. This special biofilm formation on (bio)materials in contact with saliva is initiated by ionic and protein interactions. In this interfacial process, albumin becomes a main constituent of dental pellicle. Interfacial reactions change the surface characteristics. They determine the following steps of macromolecular adsorption and bacterial adhesion. This work focuses on the dynamic contact angle analysis (DCA), which is a tool for online measurements of dynamic changes of wettability without disturbing the interface during detection. Repeatability of the DCA method has been assessed according to the Bland and Altman method. The kinetics and equilibrium data of shifts in the wetting tension hysteresis indicate ionic influences at the titanium/bovine serum albumin (BSA) interface: the Ca‐mediated increase of the BSA adsorption on titanium and the adsorption maximum at the isoelectric point (IEP) of BSA. Ti was surface modified by Teflon® AF polymeric coatings. The result of the assessment gives reason to consider Teflon® AF as a reference mate

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Author

F. Rupp; D. Axmann; C. Ziegler; J. Geis‐Gerstorfer

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); Heterocorporation; Wiley (ISSN 0021-9304)

Published

2002

Language

EN

Field

Medicine (Health Sciences)