Study on the disinfection effect of hypobromic acid on the waterway system of oral comprehensive treatment table
Objective To observe the disinfection effect of hypobromic acid on the oral comprehensive treatment table water system(DUWLs).Methods The research equipment was selected from hospital DUWLs,including 20 sets of three purpose spray guns,dental mobile phones,and water cup injectors.The three types of equipment were arranged in numbers 1-20,with devices 1-10 included in the experimental group and devices 11-20 included in the control group.The control group was not disinfected with DUWLs,while the experimental group was disinfected with hypobromic acid.Before daily diagnosis and treatment,water samples were collected for 3 minutes after rinsing.The collection time was on the 0th,1st,2nd,3rd,4th,5th,8th,10th,15th,20th,25th,and 30th days,with a total of 12 samples taken.The generalized estimation equation was constructed to compare the colony count of the cell phone jack,the water cup outlet and the three gun sockets of the two groups at different time points.The qualified rate of DUWLs water samples was compared.Results The generalized estimation equation was constructed to test the significance of the fixed effect of intercept,group,time point,group time point for the bacterial count of the two groups of mobile phone jack parts,the water cup outlet parts and the three gun jack parts.The variation difference between the two groups of data at different time points was statistically significant(P<0.05).Before the first treatment,the number of colonies in the experimental group was 16 800 more than that in the control group(P<0.05).On the 30th day,the bacterial count in the control group decreased by 29 000 compared to before the first consultation.On the 30th day,the decrease in bacterial count in the experimental group was 35 250 more than that in the control group(P<0.05).There was no statistical significant difference in the number of colonies at the cell phone socket between the two groups before the first diagnosis(P>0.05).On the 30th day,the bacterial count in the control group decreased by 86 900 compared to before the first consultation.On the 30th day,the decrease in bacterial count in the experimental group was 16 350 more than that in the control group(P>0.05).There was no statistical significant difference between the two groups in the number of colonies in the outlet of the water cup before the first diagnosis(P>0.05).On the 30th day,the bacterial count in the control group decreased by 25 550 compared to before the first consultation.On the 30th day,the decrease in bacterial count in the experimental group was 11 800 more than that in the control group(P<0.05).The pass rate of mobile phone jack,water cup outlet and gun jack in the experimental group was higher than that in the control group before diagnosis and treatment and after rinsing for 3 minutes,and the difference was statistically significant(P<0.05).Conclusion Using hypobromic acid for DUWLs disinfection can reduce bacterial count and improve the qualified rate of water samples.
国家科技期刊平台
NSTL
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