title: Inhibition of artificial secondary caries in root by fluoride-releasing restorative materials.
abstract: This investigation evaluated the fluoride-releasing properties of various fluoride-releasing restorative materials, including resin-modified glass-ionomer cements (Fuji ionomer TypeII LC, Photac-Fil Aplicap, Vitremer), compomers (Ionosit FIL, Compoglass, Dyract) and fluoride-releasing resin composites (Heliomolar radiopaque, Degufill mineral). The study also estimated the effects of those materials on the inhibition of artificial secondary caries around restorations using a bacterial caries-inducing system. The amount of fluoride released from the materials in deionized water was measured every one week for 10 weeks. Class V cavities with the gingival margin located in the root were prepared in extracted human premolars and restored with each of the materials. The restored teeth were incubated in the bacterial artificial caries chamber, and the artificial lesion created around the restoration was observed microradiographically. The resin-modified glass-ionomer cements released the largest amount of fluoride and created a thick radio-opaque zone in the artificial lesion along the restoration-dentin interface. These results indicated that the fluoride-releasing restorative materials have the potential to inhibit secondary caries formation around restorations. Resin-modified glass-ionomer cements presented a particularly strong effect, compared with compomers and fluoride-releasing resin composites.
authors.affiliation: Department of Operative Dentistry, Okayama University Dental School, 2-5-1 Shikata-cho, Okayama 700-8525, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Torii
authors.forename: T
authors.initials: T
authors.lastname: Itota
authors.forename: M
authors.initials: M
authors.lastname: Okamoto
authors.forename: S
authors.initials: S
authors.lastname: Nakabo
authors.forename: M
authors.initials: M
authors.lastname: Nagamine
authors.forename: K
authors.initials: K
authors.lastname: Inoue
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry; D000704:Analysis of Variance; D001641:Bicuspid; D002327:Cariostatic Agents / Q000737:chemistry* / Q000627:therapeutic use; D020770:Compomers / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry; D003737:Dental Cavity Preparation / Q000145:classification; D003738:Dental Cements / Q000737:chemistry; D003764:Dental Materials / Q000737:chemistry*; D003793:Dental Restoration, Permanent / Q000379:methods*; D005459:Fluorides / Q000737:chemistry* / Q000627:therapeutic use; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008852:Microradiography; D011140:Polyurethanes / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry; D012117:Resins, Synthetic / Q000737:chemistry; D017213:Root Caries / Q000382:microbiology / Q000517:prevention & control*; D017640:Silicates / Q000737:chemistry; D013295:Streptococcus mutans / Q000187:drug effects; D013997:Time Factors
chemical_list: D000180:Acrylic Resins; D002327:Cariostatic Agents; C105428:Compoglass; D020770:Compomers; C029012:Composite Dental Resin; D003188:Composite Resins; C117615:Degufill mineral; D003738:Dental Cements; D003764:Dental Materials; C088486:Dyract; C079765:Fuji II LC cement; D005899:Glass Ionomer Cements; C513708:Heliomolar; C091836:Ionosit; D008689:Methacrylates; C081144:Photac-Fil; D011140:Polyurethanes; D019279:Resin Cements; D012117:Resins, Synthetic; D017640:Silicates; C084550:Vitremer; D005459:Fluorides