Inhibition of carious lesions in vitro around gallium alloy restorations by fluoride releasing resin-ionomer cement.
A new fluoride releasing resin-ionomer cement was used for bonding of gallium alloy restorations in vitro. Etching, priming, and fluoride releasing resin-ionomer cement were used in the experimental group (ARG), prior to placement of the gallium alloy restorations. Three different controls were used: gallium alloy only (G), no etching, fluoride releasing resin-ionomer cement, gallium alloy (RG), etching, priming, non-fluoride cement and gallium alloy (ACG). The mean shear bond strengths of ARG group to enamel and dentin were higher than those of the three control groups. Artificial secondary caries lesions around the restorations in the experimental group and the control groups were produced, using a strep. mutans culture. The microradiographs were examined for presence of a caries inhibition zone near the restoration. Caries inhibition zones were clearly detected around RG and ARG, but not around G and ACG. The results indicate that the fluoride releasing resin-ionomer cement provided good adhesion and caries inhibition in enamel and dentin.
Nagamine
M
M
Department of Operative Dentistry, Okayama University Dental School, Japan.
Alim
N N
NN
Itota
T
T
Torii
Y
Y
Staninec
M
M
Inoue
K
K
D000268:Adhesiveness; D000818:Animals; D002327:Cariostatic Agents; D002417:Cattle; D016009:Chi-Square Distribution; D003188:Composite Resins / Q000737:chemistry*; D003722:Dental Alloys; D001840:Dental Bonding; D003731:Dental Caries / Q000517:prevention & control*; D003793:Dental Restoration, Permanent / Q000379:methods; D017220:Dentin-Bonding Agents / Q000737:chemistry; D004577:Electron Probe Microanalysis; D005459:Fluorides / Q000008:administration & dosage* / Q000737:chemistry; D005708:Gallium; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates; D008852:Microradiography; D019279:Resin Cements; D013718:Tensile Strength
D002327:Cariostatic Agents; D003188:Composite Resins; D003722:Dental Alloys; D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements; D008689:Methacrylates; D019279:Resin Cements; C110709:resinomer; C100742:All-Bond 2; D005708:Gallium; D005459:Fluorides