Effect Of Impregnating Antimicrobial Agents On The Relevant Properties Of The Alginate Impression Materials

Because of the increasing number of patients infected with hepatitis and AIDS, more and more concerns have arisen over the cross-contamination via dental treatment. Dental impressions, which can easily be contaminated with patient's blood and saliva, are a potential source of cross-infection. Therefore, routine disinfection of dental impressions is necessary. The disinfectants, such as chlorine compounds, glutaraldehydes and iodophors, are effective against both bacteria and viruses on the impression. However, immersing commonly-used impression materials with disinfectants may adversely affect the accuracy of dies or casts obtained. Furthermore, the disinfection of impression could complicate clinical procedures and the disinfectants' volatilization could have the potential impact on human body. The primary goal of this study is to develop a kind of self-disinfecting dental alginate impression material by impregnating the antibacterial agents into alginate impression material. In this study, the experimental self-disinfecting alginate impression material was synthesized by impregnating with three kinds of antimicrobial agents— Silver-Zirconium Phosphate, Chlorhexidine Acetate and Triclosan respectively. The in vitro antibacterial activities and the destructive rates...