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Adsorption of salivary and serum proteins, and bacterial adherence on titanium and zirconia ceramic surfaces. 2008

Emilena Maria Castor Xisto Lima, and Hyun Koo, and Anne M Vacca Smith, and Pedro Luiz Rosalen, and Altair Antoninha Del Bel Cury
Department of Prosthodontics and Periodontology, Faculty of Dentistry of Piracicaba, University of Campinas, Piracicaba, SP, Brazil.

OBJECTIVE The aim of this study was to determine the pattern of salivary and serum proteins present in pellicles formed on titanium (Ti) and zirconia ceramic (ZrO(2)) surfaces, and the ability of bacterial cells to adhere to the experimental pellicles. In addition, the protein profiles and bacterial binding properties of pellicles on Ti and ZrO(2) were compared to those formed on hydroxyapatite (HA) surface. METHODS The pellicles were formed in vitro by incubating the materials with whole saliva, serum or saliva+serum. Protein composition in each of the pellicles was investigated by SDS-PAGE and immunodetection. The adherence of radiolabeled Streptococcus mutans and Actinomyces naeslundii to uncoated surfaces and experimental pellicles was determined by means of scintillation counting. Statistical analyses were done using ANOVA and Tukey's test at significance level at P<0.05. In general, the electrophoretic analysis of the pellicles formed on HA, Ti and ZrO(2) revealed few qualitative differences of the composition of proteins of the pellicles formed on HA, Ti and ZrO(2) surfaces. Pellicle components identified included amylase, IgA, IgG, albumin, fibronectin and fibrinogen. The number of S. mutans cells adhered to uncoated Ti and ZrO(2) was significantly higher than those adhered to HA (P<0.05). In contrast, lower number of A. naeslundii cells adhered to uncoated Ti and ZrO(2) than to HA (P<0.05). However, the presence of saliva and saliva+serum pellicles greatly reduced the number of S. mutans cells bound to each of the surfaces. The data showed that Ti and ZrO(2) display similar pellicle protein composition and bacterial binding properties; however, significant differences were observed when both materials were compared to HA.

UI MeSH Term Description Entries
D001798 Blood Proteins Proteins that are present in blood serum, including SERUM ALBUMIN; BLOOD COAGULATION FACTORS; and many other types of proteins. Blood Protein,Plasma Protein,Plasma Proteins,Serum Protein,Serum Proteins,Protein, Blood,Protein, Plasma,Protein, Serum,Proteins, Blood,Proteins, Plasma,Proteins, Serum
D003743 Dental Enamel A hard thin translucent layer of calcified substance which envelops and protects the dentin of the crown of the tooth. It is the hardest substance in the body and is almost entirely composed of calcium salts. Under the microscope, it is composed of thin rods (enamel prisms) held together by cementing substance, and surrounded by an enamel sheath. (From Jablonski, Dictionary of Dentistry, 1992, p286) Enamel,Enamel Cuticle,Dental Enamels,Enamel, Dental,Enamels, Dental,Cuticle, Enamel,Cuticles, Enamel,Enamel Cuticles,Enamels
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000190 Actinomyces A genus of gram-positive, rod-shaped bacteria whose organisms are nonmotile. Filaments that may be present in certain species are either straight or wavy and may have swollen or clubbed heads.
D000327 Adsorption The adhesion of gases, liquids, or dissolved solids onto a surface. It includes adsorptive phenomena of bacteria and viruses onto surfaces as well. ABSORPTION into the substance may follow but not necessarily. Adsorptions
D000704 Analysis of Variance A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable. ANOVA,Analysis, Variance,Variance Analysis,Analyses, Variance,Variance Analyses
D001422 Bacterial Adhesion Physicochemical property of fimbriated (FIMBRIAE, BACTERIAL) and non-fimbriated bacteria of attaching to cells, tissue, and nonbiological surfaces. It is a factor in bacterial colonization and pathogenicity. Adhesion, Bacterial,Adhesions, Bacterial,Bacterial Adhesions
D012471 Salivary Proteins and Peptides Proteins and peptides found in SALIVA and the SALIVARY GLANDS. Some salivary proteins such as ALPHA-AMYLASES are enzymes, but their composition varies in different individuals. Salivary Gland Protein,Salivary Gland Proteins,Salivary Peptide,Salivary Protein,Salivary Proteins,Salivary Peptides,Gland Protein, Salivary,Peptide, Salivary,Protein, Salivary,Protein, Salivary Gland
D013295 Streptococcus mutans A polysaccharide-producing species of STREPTOCOCCUS isolated from human dental plaque.
D013499 Surface Properties Characteristics or attributes of the outer boundaries of objects, including molecules. Properties, Surface,Property, Surface,Surface Property

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