title: Presence of Streptococcus mutans and lactobacilli in saliva and on enamel, glass ionomer cement, and composite resin surfaces.
abstract: The quantity of S. mutans, total streptococci, and lactobacilli on sound enamel surfaces and 1-yr-old glass ionomer cement and composite resin fillings with the cervical margins placed subgingivally was compared intra-individually. The amount of bacteria was compared to their number in saliva. The evaluation was done in a cross sectional study, where the patients continued to use their customary oral hygiene procedures and during a 14-day period of experimental plaque formation. The number of lactobacilli and S. mutans recovered from the test surfaces indicated that the critical salivary concentrations necessary for the isolation of S. mutans and lactobacilli from glass ionomer cement and composite resin surfaces are the same as for the enamel surfaces. The fluoride levels in plaque adjacent to glass ionomer cement will not become high enough to inhibit the accumulation of the investigated bacteria.
authors.affiliation: Department of Cariology, Faculty of Odontology, University of Umeå, Sweden.
authors.forename: J
authors.initials: J
authors.lastname: van Dijken
authors.forename: S
authors.initials: S
authors.lastname: Persson
authors.forename: S
authors.initials: S
authors.lastname: Sjöström
mesh_terms: D015169:Colony Count, Microbial; D003188:Composite Resins; D003430:Cross-Sectional Studies; D003743:Dental Enamel / Q000382:microbiology*; D003773:Dental Plaque / Q000382:microbiology; D003793:Dental Restoration, Permanent; D005899:Glass Ionomer Cements; D006801:Humans; D007778:Lactobacillus / Q000302:isolation & purification*; D009910:Oral Hygiene; D012463:Saliva / Q000382:microbiology*; D013291:Streptococcus / Q000302:isolation & purification; D013295:Streptococcus mutans / Q000302:isolation & purification*; D013499:Surface Properties
chemical_list: D003188:Composite Resins; D005899:Glass Ionomer Cements