|0341 Bond Strength of Composite Resins Using a New One-step Adhesive System|
H. JUNG, K.-H. FRIEDL, K.-A. HILLER, and G. SCHMALZ, University of Regensburg, Germany|
Objectives: The aim of this study was to compare bond strengths of four composite resins (Tetric Ceram [Vivadent], Filtek Z250 [3MESPE], Spectrum TPH [DeTrey/Dentsply], and Herculite XRV [Kerr]) using (1) the adhesive systems provided by the manufacturers (Excite [Vivadent], Scotchbond 1 [3MESPE], Prime & Bond NT [De Trey/Dentsply], Optibond Solo Plus [Kerr]) or (2) a new one-step adhesive system (Adper Prompt L-Pop [3MESPE]).
Methods: Shear bond strengths to enamel and dentin were determined according to ISO TS 11405. Pairwise comparisons among groups were made using the Mann-Whitney-U-test (p < 0.05). Median values and 25- and 75% quartiles calculated from 10 replications are shown in the following table:
Conclusions: For enamel median bond strengths were higher than 28.9 MPa for all test combinations with no system showing significantly better values. Only Tetric Ceram/Excite, Filtek Z250/Scotchbond 1, and Herculite XRV/Optibond Solo Plus showed no significant differences between enamel and dentin. Adper Prompt L-Pop provided lower values in dentin compared to enamel for each composite. In dentin Adper Prompt L-Pop always showed significantly lower bond strengths when not used with the recommended composite. This study was supported by 3MESPE, Seefeld, Germany.
|Seq #49 - Self-etching Adhesive Systems 3|
11:00 AM-12:15 PM, Thursday, 26 June 2003 Svenska Massan Exhibition Hall B