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Effect of CaF₂ Content on Rate of Fluoride Release from Filled Resins

Department of Dental Biomaterials, College of Dentistry, University of Florida, PO Box 100446, 1600 SW Archer Rd., Gainesville, FL 32610-0446, USA;

View larger version (12K): [in a new window]   Figure 1. Fluoride ion release rate as a function of time in pH4 and pH6 buffer solution for filled resin specimens containing (A) 33.33 mass%, (B) 23.08 mass%, and (C) 9.09 mass% CaF2 (n = 10).

View larger version (90K): [in a new window]   Figure 2. SEM images (A) and x-ray elemental maps of fluorine (B) and calcium (C) of the cross-section of the outer edge of composite disks containing 9.09, 23.08, and 33.33 mass% CaF2 after exposure for 4 mo in ambient air (control), and pH6 and pH4 buffer solutions. The white vertical bar in A represents 10 µm, and the white vertical bars in B and C represent 50 µm