Authors: Mihaela-Papusa Vasiliu (Diaconu), Daniela Ivona Tomita, Delia Spridon, Nicoleta Dumitrascu, G. Costin, Carmen STADOLEANU


Surface energetic characteristics of biomaterials influence their adherence to cells and bacteria, surface adsobtion of plasmatic proteins, as well as the capacity of such surfaces of immobilizing some biological species extremely important in medicine. Materials and method: Acrylic surfaces with an area of approximately 2 cm2 were employed for the experiments: Duracryl Plus (Spofa/Dental Product, Czechia), Duracryl Plus covered with Palaseal (Heraeus Kulzer GmbH, Wehrheim, Germany); artificial saliva AFNOR S90-701 (pH 8.01) was used as a working solution. Results and discussion: Drops of distilled water and artificial saliva, deposited on the working materials: Duracryl and Duracryl covered with Palaseal, were photographed with an optical device, after which each drop was computer-processed, and the contact angle for each liquid surface on the surfaces of the biomaterials here under investigation was determined. On the basis of the determinations made for each material in part, the arihtmetic mean was established.
Conclusions: The wettability of dental materials is wholly characterized by the values of the contact angle between the drop of biological liquid and the surface. Low values of the contact angles indicate a good wettability. The results obtained support the conclusion that the surface energy of the solid and rugosity are essential for controlling the adhesive properties of saliva unto dental materials.

  • dental acryclic biomaterials
  • energetic characteristics
  • protection lacquers
  • saliva