Comparison of different cleansing agents for decontamination of lithium disilicate ceramics: a microtensile bond strength study
Project no. 385 · Status: Kapanmış · 2016
Summary
The aim of this in-vitro study was to investigate the efficacy of three cleansing agents for decontamination of lithium disilicate (LD) ceramics. Six LD ceramics (IPS e.max Press, Ivoclar Vivadent, Schaan, Liechtenstein) (4x4 mm) were fabricated. Composite discs were also fabricated with the same size of ceramics. Ceramic discs were contaminated with a light body impression material. Ceramic discs were then divided into 3 groups according to the cleansing method: Group I (Ivoclean), Group E (ethyl alcohol), and Group U (Ultrasonic cleaning with detergant). Composite and ceramic discs were cemented with an adhesive cement (Variolink N). The composite-ceramic discs were embedded in polymethylmetacrilate. Specimens were then cut with low-speed diamond knife (Isomet, Buehler, IL, USA) into 1x1x8 mm bars. There were 18 bars for every group. The bars were positioned in a universal testing machine for microtensile test. Data were recorded then statistically analyzed. The highest bond strenght were seen in Ivoclean group (21.23 MPa). There were no statistically significant difference between Group I and Group E (20,.25 MPa) (p>0.05). Group U showed 16.3 MPa (p=0,00). Ivoclean showed effective cleaning and higher bond strength value. All cleaning methods in this study showed acceptable bond strength values within the acceptable clinical ones. Keywords: lithium disilicate ceramics, Ivoclean, microtensile bond strenght test.