Effect of black tea on the transverse strength of heat-polymerized acrylic resin

Abstract

Introduction: Heat-polymerized acrylic resin is the most basic denture material used. One of the mechanical properties of an acrylic resin is its transverse strength. The transverse strength test provides an overview of the material's durability in accepting the load at mastication. Consumption of tea, especially black tea in the world placed the second most consumed. The purpose of this study was to determine the effect of black tea on the transverse strength of heat-polymerized acrylic resin. Methods: This research was an experimental laboratory with 24 samples of heat-polymerized acrylic resin plate with the size of 65x10x2.5 mm. The sample was divided into 6 groups, each consisted of 4 samples. The first, second, and the third groups were immersed in aquadest for consecutively 1, 4, and 20 days. The fourth, fifth, and sixth groups were immersed in the black tea for consecutively 1, 4, and 20 days. The transverse strength was tested using the three-point bending method with the Universal Testing Machine. The results of the transverse strength measurement were then analyzed statistically by the One-way ANOVA test and Holm's sequential Bonferroni posthoc test as an advanced test. Results: The results of the statistical test showed that p<0.05 (p=0.000) which means that the six groups have a significant difference in the average value of the transverse strength. Conclusion: The conclusion of this research was the black tea immersion duration was affecting the transverse strength differences of the heatpolymerized acrylic resin.

Effect of Alcohol and Tea on Solubility of Soft-liner and Polymethyl Methacrylate Resin: An In Vitro Study

“…3,6,14 In study by Kazanji et al solubility of soft-liner in artificial saliva was found to be increased after one month. 14 15 Safari et al tested the effect of 8% and 50% alcohol on hardness and tensile bond strength of soft-liner to the acrylic resin and found no significant interaction. 16 To the best of our knowledge, this is the first study reporting solubility of soft-liner and acrylic resin in tea with milk and green tea.…”

“…Phenol compounds being highly polar degrade the chemical bonds of acrylic resin and weakens the secondary polymeric chains and increases water absorption. 15 Tea with milk and green tea are commonly consumed drinks in India. Our in vitro study shows increased solubility of soft-liner and acrylic base resin when immersed in these solutions.…”

Transversal Strength of Heat Cured Acrylic Resin in Immersion of Extract Annona muricata L. Effervescent

“…14 Good transverse strength, according to ADA specification No.12, is a minimum of 65 MPa. 15 The objective of this study is to analyze the role of Anonna muricata L. effervescent extract with various concentrations (25,35, and 45%) on the transversal strength of heat-cured acrylic resin.…”