抄録
Dissolving Efficacy of % 2 Chlorhexidine Glukonat Mouthwash on Dental Luting Cements.
Tukay A, Gozneli R, Atay A, Cudi M, Oruc S (1Department of Prosthetic Dentistry, Gulhane Military Medical Academy of Haydarpasa, Istanbul, Turkey, 2Department of Prosthetic Dentistry, University of Marmara, Istanbul, Turkey, 3Department of Prosthetic Dentistry, University of Istanbul, Istanbul, Turkey)
Introduction:
Dental cements used in fixed prosthodontics have the primary purpose of luting or sealing the cast restoration to the prepared tooth. A permanent luting cement should have high strength, low film thickness, be non-irritating to the dental pulp, and have low solubility. A critical property of luting cement is its solubility in oral fluids. If the cement dissolves at an unacceptably high rate, the tooth is susceptible to recurrent caries and the retention of the cast restoration can be compromised.
The aim of this study was to investigate the rate of cement solubility of 5 kinds of luting cements in chlorhexidine glukonat mouthwash using patients in vivo. These cements are; zinc-phosphate, polycarboxylate, glass ionomer, hybrid and resin cements.
Materials and methods:
The materials used in this study were;
Zincphosphate cement; Adhesor Phosphate (Shofu dental).
Polycarboxylate cements; Aqualox (Voco), Adhesor carbofine (Shofu)
Glass ionomer cements; Aqua Meron (Voco), Ketac Cem (3M Espe)
Hybrid cements; Fuji plus (GC Corp.), Vitremer (3M Espe)
Resin cements: Variolink II (Ivoclar/Vivadent); RelyX Unicem (3M Espe)
The specimens were inserted in the buccal flanges on the molar site of the maxillar complete dentures of 14 edentulous patients. 7 patients are told to use %2 chlorhexidine glukonat, others not to use any kinds of mouthwash solutions. After 12 weeks, the cement specimens were removed and the amount of solubility was measured with direct techniques. Scanning electron microscopy was used to evaluate surface topography after disintegration. The elements present in each cement were determined with energy-dispersive spectroscopy
Results:
The zinc phosphate and polycarboxylate cements demonstrated approximately equal solubility. Glass-ionomer cement exhibited significantly less solubility than did either zinc phosphate or polycarboxylate cement. The resin and hybrid cements are more resistant to dissolution effects of % 2 chlorhexidine glukonat.
Discussion:
Chlorhexidine glukonat has a dissolving effect on all luting cements but some of the resin and hybrid cements are more resistant than the others.
