• Kupka, Tomasz Walter
• Nowak, Joanna
• Szczesio, Agata
• Sokołowski, Jerzy
• Fronczek-Wojciechowska, Magdalena
• Kopacz, Karolina

Abstract

Introduction. Failure of dental restorations iscommonly associated with residual infected dentineunderneath. Dental materials containing antimicrobialsmay overcome the problem of recurrent caries withoutjeopardizing their physicomechanical characteristics.Aim of the study. To evaluate hardness and diametraltensile strength (DTS) of a water-activated glassionomer(WAGIC) enriched with increasing massconcentration of triclosan (TRC) – the antimicrobialagent. Material and methods. TRC was added to thepowder of WAGIC in weight concentrations of 0.5%,1.0%, 1.5%, 2.0% served as experimental groups, and0.0% as a control group, respectively. In each grouptwo subgroups were defined to record Vickers hardness(HV0.3/15) and DTS after 1 and 24 hours of storagein distilled water. Shapiro-Wilk test of normality,parametric (F-test or t-test) or non-parametric(Kruskal-Wallis test or Mann-Whitney test) were usedfor the purpose of statistical analysis (p = 0.05); theequality of variance was checked with Levene’s test. Results. HV0.3/15 was significantly higher after 24 hthan after 1 h. In both cases addition of 0.5 % of TRCcaused significant decrease of hardness. DTS valueswere significantly higher after 24 h with addition of0.5 % TRC, but generally it was slightly decreasedin comparison to the control group. Conclusions.Except 0.5 % TRC, there was no negative influence ofantimicrobial addition on HV0.3/15 and DTS, so TRCdoes not deteriorate strength of WAGIC.

Topics

• strength
• hardness