title: Adsorption of parotid saliva proteins and adhesion of Streptococcus mutans ATCC 21752 to dental fiber-reinforced composites.
abstract: The use of fiber-reinforced composites (FRC) in dentistry has increased during recent years. In marginal areas of crowns and removable partial dentures the fibers may become exposed and come into contact with oral tissues, saliva, and microbes. To date, few articles have been published on oral microbial adhesion to FRCs. The aim of this study was to compare different FRCs, their components, and conventional restorative materials with respect to S. mutans ATCC 21752 adhesion and adsorption of specific S. mutans binding proteins. Surface roughness of the materials was also determined. Four different FRCs, a restorative composite, and a high-leucite ceramic material were studied. Polyethylene FRC was found to be significantly rougher than all other materials. Aramid FRC also showed higher surface roughness in comparison with all materials but polyethylene FRC. Without a saliva pellicle, adhesion of S. mutans coincided with surface roughness and polyethylene and aramid FRC promoted S. mutans adhesion better than the other smoother materials. In the presence of salivary pellicle, ceramic and polyethylene FRC bound more bacteria than the other materials studied. Higher quantities of S. mutans binding proteins in the pellicles may in part account for the higher S. mutans adhesion to saliva-coated ceramic and polyethylene FRC.
authors.affiliation: Institute of Dentistry and Biomaterials Research, University of Turku, Finland. johanna.tanner@utu.fi
authors.forename: Johanna
authors.initials: J
authors.lastname: Tanner
authors.forename: Anette
authors.initials: A
authors.lastname: Carlén
authors.forename: Eva
authors.initials: E
authors.lastname: Söderling
authors.forename: Pekka K
authors.initials: PK
authors.lastname: Vallittu
mesh_terms: D000180:Acrylic Resins; D000327:Adsorption; D001422:Bacterial Adhesion; D003188:Composite Resins; D044622:Dental Pellicle; D006801:Humans; D066298:In Vitro Techniques; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D010306:Parotid Gland / Q000378:metabolism; D011140:Polyurethanes; D012463:Saliva / Q000382:microbiology; D012471:Salivary Proteins and Peptides / Q000378:metabolism*; D013295:Streptococcus mutans / Q000472:pathogenicity*; D013499:Surface Properties
chemical_list: D000180:Acrylic Resins; C029012:Composite Dental Resin; D003188:Composite Resins; D011140:Polyurethanes; D012471:Salivary Proteins and Peptides