dental instruments and medical personnel microbial contamination status of iatrogenic infection

 1.1 Microbial contamination of dental instruments dental instruments in addition to being the patient's blood, saliva and other oral secretions pollution, the environment may be dental, medical staff hand contamination. HBV, HCV, HIV and other viruses is not only present in the blood, which can be discharged from the saliva contaminated dental instruments. Our hospital dental equipment HBsAg contamination rate fluctuations on 5% to 30%, urban individual dental clinic equipment on HBsAg positive rate of 37%, rural clinics dental equipment on HBsAg positive rate of 62%. dental Vacuum Former handpiece contamination of up to 5 × 10 4 ~ 5 × 10 6 cfu/cm2. The findings microbial contamination of dental instruments three major categories namely oral colonization flora, gastrointestinal pathogens such as Salmonella bacteria group, Escherichia coli group, Shigella dysentery bacteria, Pseudomonas group and fungi, times but also have paid close attention to blood-borne disease pathogens.

    1.2 medical personnel iatrogenic infection status dental instruments serious pollution not only endanger the patient, it also endangers the medical staff. Dental Clinic medical staff is one of many facing the unknown HBV, HCV, HIV infection or pathogen carriers come to treatment, their blood, saliva may contain pathogenic factor, so that dental burs patients and medical staff have the chance of infection. According to the medical staff of cold Taijun population survey found that hospital medical staff serum HBsAg positive rate of the general population is 3 to 6 times, and dental medical staff serum HBsAg positive rate is four times the other department staff. Foreign existing clinical data show that dentists HBV, HCV, HIV infection problems are present occupation. According to Japanese scholars Mochizuki widely reported that the Japanese dental practitioner HBV infection rate was 35.9%. Practicing dentist in the United States are also infected with HIV was reported.