Secondary caries formation in vitro around fluoride-releasing restorations.
Secondary caries is one of the most important factors leading to replacement of dental restorations. This investigation assessed the capacity of fluoride-releasing restorative materials to resist caries in vitro. Class 5 cavities were prepared in buccal and lingual surfaces of 18 extracted premolars. The six materials used were: high-copper amalgam (Dispersalloy), fluoride-containing amalgam (Fluor-Alloy), composite resin (Valux), fluoride-containing composite resin (Heliomolar), glass-ionomer cement (Fuji), and glass-ionomer cement with silver particles added (Ketac-Silver). After 15 weeks in an acid gel for caries-like lesion formation, the teeth were sectioned longitudinally and examined with polarized light. The results showed that restoration of caries with glass-ionomer materials and fluoride-containing amalgam may be of great importance in the prevention of both secondary caries around the restorations and primary caries in surface enamel adjacent to the restoration.
Dionysopoulos
P
P
Department of Operative Dentistry, Aristotle University of Tessaloniki, Dental School, Greece.
Kotsanos
N
N
Koliniotou-Koubia
Papagodiannis
Y
Y
D000180:Acrylic Resins; D000704:Analysis of Variance; D002327:Cariostatic Agents / Q000737:chemistry / Q000627:therapeutic use*; D016722:Cermet Cements; D003188:Composite Resins; D003722:Dental Alloys; D003723:Dental Amalgam; D003731:Dental Caries / Q000209:etiology / Q000517:prevention & control*; D003743:Dental Enamel; D003793:Dental Restoration, Permanent / Q000009:adverse effects* / Q000379:methods; D005459:Fluorides / Q000737:chemistry / Q000627:therapeutic use*; D005899:Glass Ionomer Cements; D006801:Humans; D011140:Polyurethanes; D016037:Single-Blind Method
D000180:Acrylic Resins; D002327:Cariostatic Agents; D016722:Cermet Cements; C029012:Composite Dental Resin; D003188:Composite Resins; D003722:Dental Alloys; C100714:Fluor-Alloy; D005899:Glass Ionomer Cements; C513708:Heliomolar; D011140:Polyurethanes; C067319:valux; C033470:Dispersalloy; C037885:Fuji-ionomer; D003723:Dental Amalgam; D005459:Fluorides