Children were divided into @ groups based on type of FS ( Group @ : Aegis -LCB- Bosworth Co , North Hamlin Avenue Skokie , Illinois , USA -RCB- , Group @ : Fuji Triage -LCB- GC , Tokyo , Japan -RCB- , Group @ : Helioseal -LCB- Ivoclar Vivadent , Liechtenstein , Germany -RCB- ) .