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With regard to <jats:italic>Legionella<\/jats:italic> spp., the proportion of positive samples was 33.3%. During work activity, the index of microbial air contamination (IMA) increased. The level of microbial accumulation on examined surfaces did not change over time.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusion<\/jats:title>\n            <jats:p>These findings confirm that some Italian dental surgeries show high biocontamination, as in other European Countries, which highlights the risk of occupational exposure and the need to apply effective measures to reduce microbial loads.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1186\/1471-2458-8-187","type":"journal-article","created":{"date-parts":[[2009,8,7]],"date-time":"2009-08-07T09:25:15Z","timestamp":1249637115000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":42,"title":["Italian multicenter study on infection hazards during dental practice: Control of environmental microbial contamination in public dental surgeries"],"prefix":"10.1186","volume":"8","author":[{"given":"Paolo","family":"Castiglia","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giorgio","family":"Liguori","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maria Teresa","family":"Montagna","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christian","family":"Napoli","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cesira","family":"Pasquarella","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Margherita","family":"Bergomi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leila","family":"Fabiani","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Silvano","family":"Monarca","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefano","family":"Petti","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"name":"SItI Working Group Hygiene in Dentistry","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2008,5,29]]},"reference":[{"issue":"10","key":"1157_CR1","first-page":"775","volume":"63","author":"J Barbeau","year":"1997","unstructured":"Barbeau J, Nadeau C: Dental Unit waterline microbiology: a cautionary tale. 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