Effect of Adhesive Systems on Bond Strength between Dentin and Compomer Base Materials.
Objective: To evaluate microtensile bond strength of compomer base materials to human dentin when using with or without dental adhesive systems.
Materials and Methods: Flat dentin surfaces were prepared and divided. Group 1-6: bonded with OptiBond FL™ (TE) or Clearfil™ SE Bond (SE) or without, and then filled either with compomers: Ionosit-baseliner (IB) or Ionoseal® (IS). Group 7: filled with resin-modified glass ionomer cement (Fuji II LC®). Samples were stored in 37°C water for 24 hrs and sectioned into beam-shape specimens at interface area of 1x1 mm2 for microtensile bond strength test. Data were analysed by one-way ANOVA analysis and Duncan test (p<0.05).
Results: There was significant difference between groups restored with and without adhesive systems (p<0.05). Ionosit-baseliner exhibited higher bond strength than Ionoseal® in each adhesive system. Total-etch adhesive tended to show higher bond strength for compomer material in terms of adhesive systems.
Discussions: Compomers could not bond well to dentin without adhesive systems. Therefore, compomers should be used with dental adhesive.
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