Abstract
This report investigated how different treatment durations of the three organic solvents (chloroform, 1-butanol, ethyleneglycolmonobuthylether and dichloromethane) significantly improved the tensile bond strengths of base resin and repair resin, which was reported in our previous report, in addition to dichloromethane may affect the bonding thereof.Thus the influences of the variety of the treatment duration of these four organic solvents on the tensile bond strengths were evaluated.And the changes on the surfaces of the denture resin materials after surface treatments were investigated with naked eye and scanning electron microscopy (SEM).
Under the conditions of this study, the result showed that the tensile bond strengths were improved with treatment durations of approximately 20sec (chloroform), 5sec or 20sec (1-butanol), 10sec (ethyleneglycolmonobuthylether) and 5sec (dichloromethane).
However, macroscopically and microscopically discernible changes were noted in the base resin surfaces treated with only chloroform and dichloromethane.Therefore, further a study to determine the most suitable treatment duration of the four organic solvents using compressive shearing test systems must be carried out.
