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Edmunds LM, Rawlinson A;AUSTRALIAN DENTAL JOURNAL
43: (5) 349-353 OCT 1998 Abstract:
Blood contamination of 16 surfaces in the dental surgery was
investigated using the Kastle-Meyer test for haemoglobin, after
three types of periodontal procedures had been performed on a total
of 30 patients. The effect of cleaning surfaces contaminated by
blood was investigated using the same test. Cleaning materials used
in the dental surgery were tested to rule out the possibility of
false positive outcomes and the sensitivity of the test was
determined prior to the study. The results show a marked variation
in the degree of contamination and efficacy of cleaning following
treatment. Overall, root planing was associated with the most
widespread and frequent blood contamination and gingival surgery
the least. The surgery work surface, edge of the spittoon,
aspirator tube and ultrasonic scaler handpiece into which the
ultrasonic insert fits, were the most frequently contaminated
surfaces. The work surface, dentist's pen, light switch and handle
were cleaned most effectively. The least effectively cleaned
surfaces were the water dispenser switch, aspirator tube, bracket
table and ultrasonic scaler handpiece. Methods for reducing this
potential source of cross-infection are discussed.
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