[The disinfection efficiency observation of a compound disinfectant spray on dental impression and plaster].
OBJECTIVE
The disinfection efficiency of a compound disinfectant spray with trichioro hydroxyl diphenyl ether on dental impression and plaster model, which have been contaminated by pathogens, were evaluated in this study.


METHODS
As experimental group, germ-free alginate impressions and plaster models were sprayed with the compound disinfectant of different density trichloro hydroxyl diphenyl ether or indophors for 5, 10 and is mm, after which were smeared with five tested pathogens, including Staphylococcus acre us, Escherichia cali, Saccharomyces albicans, Streptococcus mutans and black spore variants of Bacillus subtilis. The colonies were counted after sampling, inoculate and culture, which were used to deduce the killing logarithm value as the standard of the disinfecting efficiency.


RESULTS
the compound disinfectant spray with 3000 mg x L(-1) triebloro hydroxyl diphenyl ether was effective to all tested pathogens for 10 mm whatever on the impressions or the plaster models. The disinfectant spray with tame concentration was more effective on the alginate impression than on the plaster model in the same time (P = 0.000).


CONCLUSIONS
The compound disinfectant spray with trichioro hydroxyl diphenyl ether is an effective antiseptics for alginate impressions and plaster models.
Jiang
Fan
F
Dept. of Stomatology, The affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China.
Yu
Hai-yan
HY
Xiao
Xiao-rong
XR
Gao
Shan-shan
SS
D000464:Alginates; D019551:Dental Disinfectants; D003760:Dental Impression Materials; D004202:Disinfectants; D004203:Disinfection; D020723:Glucuronic Acid; D006603:Hexuronic Acids
D000464:Alginates; D019551:Dental Disinfectants; D003760:Dental Impression Materials; D004202:Disinfectants; D006603:Hexuronic Acids; D020723:Glucuronic Acid