Impact strength of heat-cured acrylic resin after immersion in tobacco leaf (Nicotiana tabacum L.) effervescent tablets: An experimental study

Abstract

Abstract Aim: To determine the effect of immersing heat-cured acrylic resin on tobacco leaf extract (TLE) effervescent tablets 75% on the impact strength. Materials and Methods: This research used an experimental design. Rectangular acrylic resin with a size of 60 mm × 12 mm × 3 mm, according to American Standards for Testing and Materials, was used. The samples were divided into three groups: immersed in distilled water as a negative control group, immersed in a solution of TLE effervescent tablets with a concentration of 75%, and immersed in commercially available dental cleansers as a positive control group. The immersion of the samples was carried out for 16 days which was equivalent to cleaning 30 min per day for 2 years. TLE effervescent tablets were compared with commercially available dental cleansers. Next, the impact strength of the sample was tested. Results: The one-way analysis of variance test results showed a P-value <0.005, that is, a significant difference in each treatment group’s impact strength of heat-cured acrylic resin denture bases. The results of the post hoc test (least significance difference; LSD) showed that there is no significant difference in the impact strength of immersed acrylic in 75% TLE effervescent tablets with aquades compared to denture commercially available dental cleansers. Conclusions: 75% TLE effervescent tablets as a denture cleanser have the effect of reducing the impact strength of heat-cured acrylic resin type with a soaking time of 16 days, which is equivalent to cleaning 30 min per day for 2 years. The limitation of this research is the type of heat-cured acrylic used only from one brand, maybe different brands will give different results, so further testing is needed to prove it.