Health care and supervision of dentures worn by bedridden elderly using ozone

为探讨进一步加强对卧床不起的老年人戴义齿的保健和监督的可能性，我们着手调查臭氧对牙菌斑的主要构成菌--白色念珠菌的消毒效果。此外，我们还利用感官测试来确定除臭的程度。在1997年，我们组装了必要的实验室设备，以研究臭氧对白色念珠菌的消毒性能。高压电池和气泵串联连接到臭氧发生器，臭氧发生器又通过硅管连接到泡沫或气泡发生器。后者的发电机被悬浮在实验室烧杯中的水中，下端悬挂。空气被泵入臭氧发生器，高压放电产生的臭氧空气通过臭氧发生器进入水箱。用臭氧密度计确定了臭氧产生浓度与电压之间的关系。结果显示，在23ppm、41ppm和49ppm的臭氧浓度下，细菌数量分别在25分钟、20分钟和15分钟内从10^1 cfu/ml降至约10^3 cfu/ml。1998年，我们还研究了臭氧对义齿气味的除臭效果。结果表明，接受检查的义齿的气味在10分钟内完全消失。综上所述，用臭氧清洁义齿是一种适当的卫生护理方法。

The purpose of this research was to look into the possibility of furthering the health care and supervision of dentures worn by the bedridden elderly.We set out to investigate the disinfectant effect of ozone on Candida albicans (C.albicans), the main constituent bacterium of dental plaque. In addition we used on organoleptic test to establish the extent of deodorization.In 1997, we assembled the necessary laboratory equipment to investigate the disinfectant properties of ozone with regard to C.albicans. A high voltage battery and an airpump were attached in tandem to the ozone generator which in turn was connected to a foam, or bubble, generator by means of a silicon tube. This latter generator was suspended with the lower end in water contained in a laboratory beaker. Air was pumped into the ozone generator and the ozonized air arising from the high voltage discharge passed into the water container by way of the ozone generator. The relationship between the generated ozone concentration and the voltage was confirmedby means of an ozone densitometer. The ozone concentration was set at three levels.The results showed that it took 25 minutes for the number of bacteria to decline to approximately 10^3 CFU/ml from 10^1 CFU/ml at an ozone concentration of 23 ppm, 20 minutes at 41 ppm and 15 minutes at 49 ppm.In 1998, the deodorant effect of ozone on denture odor was also investigated.It turned out that the odor of dentures subjected to scrutiny had completely dissipated within 10 minutes.To sum up, cleaning dentures by means of ozone was shown to be an appropriate means of providing for the hygienic care of the dentures of thebedridden elderly.