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International Journal of Periodontics & Restorative Dentistry
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Int J Periodontics Restorative Dent 25 (2005), No. 3     27. May 2005
Int J Periodontics Restorative Dent 25 (2005), No. 3  (27.05.2005)

Page 277-281


Effect of Topical Fluorides and Citric Acid on Heat-Pressed All-Ceramic Material
Demirel, Figen/Yüksel, Gülsen/Muhtarojullari, Mehmet/Cekic, Cihat
The effects of citric acid and acidulated phosphate fluoride on the surface roughness of autoglazed and overglazed all-ceramic IPS Empress materials were analyzed. Atomic force microscopy was used to measure the roughness. Citric acid solution (2.00%) was applied for 8 hours, simulating 2 years of exposure. Acidulated phosphate fluoride gel (1.23%) was applied for 32 minutes, simulating 2 years of fluoride therapy. Acidulated phosphate fluoride caused a significant roughening effect on both autoglazed and overglazed specimens.