Impact of Physical Chemical Characteristics of Abutment Surfaces on Bacterial Adhesion
The ability of bacteria to adhere to surfaces is directly influenced by electrostatic interactions between the bacteria and the chemical composition of the material surfaces. This study was specifically a comparison of titanium (Ti) vs. zirconia (ZrO2) implant abutments vs. bovine enamel to determine their effects and strengths of bacterial adhesion.
This research synopsis examines: Impact of Physical Chemical Characteristics of Abutment Surfaces on Bacterial Adhesion. de Avila, et al. Journal of Oral Implantology. 2016 April ; 42(2): 153-158.
Through a series of in vitro laboratory applications, both the physical and chemical characteristics of the abutment surfaces had a direct impact on the adhesion phase in bacteria, with the surface roughness being standardized and evaluated with atomic force microscopy. Specifically, the bacteria selected for use in the study were Streptococcus mutans (s. mutans) and Porphyromonas gingivalis (p. gingivalis) due to their common existence in the oral cavity. The abutment material surfaces were studied using scanning electron microscopy to determine the surface free energies of the adhesions. The initial results indicated a hydrophobic characteristic for each of the materials studied.
Within the limitations of an in vitro laboratory study, the results suggest that bacterial adhesion on Ti was lower than that of ZrO2, but it was also noted that bovine enamel had a consistently higher rate of bacterial adhesion than either that of Ti or ZrO2.