Table 1.
Description of the immersion test for the used endodontic files.
| Used endodontic files (UEFs) | Culture medium | Bacteria inoculated | File | SRB growth after 30/445 days |
|---|---|---|---|---|
| UEF-1 | Postgate C culture medium with 7.0 g/l of agar-agar (vehicle I) | Desulfovibrio desulfuricans (oral) | Kerr #40 | Reduction/reduction |
| UEF-2 | Modified Postgate E culture medium | Desulfovibrio fairfieldensis (association) | Kerr #25 | Positive/positive |
| UEF-3 | Modified Postgate E culture medium | Desulfovibrio desulfuricans (environmental) | Kerr #20 | Positive/positive |
| UEF-4 | Modified postgate E culture medium | Desulfovibrio desulfuricans (environmental) | Hedströem #25 | Positive/positive |