[Physical and bacteriological examinations of self-administered relining materials].

In this study, for the purpose of evaluate the self-administered relining materials sold on the market, conducted both the physical and the bacteriological studies.Consequently, the following conclusions were obtained.1. Physical studies1) As for the pH, it was about pH 6 mediately after measuring, and about pH 4-7 at the 60 minutes later.2) The viscosity increased to about twice as much as that at the start of using self-administered relinig materials; LDT-about 30 minutes, CRT and EIZ-about 6 hours.3) The compressive stress in the gap volume 2.0-0.5mm was found to be larger than that in the gap volume 2.5-1.0mm.4) The tensile adhesiveness was extremely small.2. Bacteriological studies1) No antibacterial action whatever was noted as against Escherichia coli, Staphylococcus aureus and Candida albicans.2) The number of bacteria stuck to Candida albicans increased gradually with the passage of time.3) While the cleaning effect of the denture cleaner was marked as against Candida albicans.3. From this study, it is necessary to have a dentist give them guidance and monitor the developments.