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Volume 20 , Issue 5
September/October 2007

Pages 494495

Erosion of Luting Cements Exposed to Acidic Buffer Solutions

Ferah Isk Kuybulu, DDS, PhD / Deniz Gemalmaz, DDS, PhD / Cornelis H. Pameijer, DMD, DSc, PhD / Aysen Yarat, DDS, PhD / Toros Alcan, DDS, PhD

PMID: 17944338

The aim of this study was to evaluate acidic erosion of 7 luting cements. Erosion was evaluated via immersion in 0.1 M aqueous sodium lactate/lactic acid buffer (pH = 2.74 and 4.0, respectively). The rank order of cement loss was as follows: Phosphate Cement > Fuji I hand-mixed = Fuji I encapsulated > Ketac Cem > Calibra = Fuji Plus = Variolink Ultra. Cement type, pH, and time had statistically significant effects. Water-based cements exhibited more erosion compared to resin-based cements, and the latter underwent hygroscopic expansion caused by water sorption. Int J Prosthodont 2007; 20:494495

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