1992 Volume 36 Issue 2 Pages 243-249
Tensile bonding strength to acrylic resin of the tissue conditioning materials were evaluated, at immersed period in distilled water (37°C) of 1 hour, 6 hours, 1 day, 3 days, 2 weeks and 1 month from the start of mix of tissue conditioning materials. In addition, these materials were evaluated at 360, 800, 1, 600 and 2, 600 times in thermal cycle test (4°C to 37°C). The samples of three acrylic tissue conditioning materials were prepared, and a silicone relining material was used as a control.
Ultimate tensile bonding strength of acrylic tissue conditioning materials increased in accordance with a increase of immersed period for 1 hour to 3 days, and its strengths also increased in thermal for 360 to 1, 600. Ultimate tensile bonding strength of silicone material did not change after immersed period of 6 hours and thermal cycles of 800. The tensile stress of acrylic tissue conditioning materials immersed in distilled water was larger than the values obtained for 3 days to 1 month, compared with those for 1 hour to 1 day. The tensile stress of silicone relining material did not change after immersed period of 6 hours and with a increase of thermal cycle.
