Total bacterial counts of water samples obtained from dental unit hoses (n=51) and air/water syringes (n=51)
| Hoses | Air/water syringes | ||||||
|---|---|---|---|---|---|---|---|
| Total bacterial counts (cfu/ml at 37°C) | Total bacterial counts (cfu/ml at 22°C) | Total bacterial counts (cfu/ml at 37°C) | Total bacterial counts (cfu/ml at 22°C) | ||||
| Mean | 306 | 2260 | 2619 | 2843 | |||
| SD | 460 | 13978 | 13961 | 14964 | |||
| Median | 110 | 50 | 300 | 200 | |||
| Minimum | 1 | 1 | 1 | 1 | |||
| Maximum | 2200 | 102000 | 105000 | 107000 | |||
| Exceeding ADA goal (%)5-150 | 47.1 | 29.4 | 56.9 | 52.9 | |||
| (n=24) | (n=18) | (n=29) | (n=27) | ||||
| Exceeding EU guidelines (%)5-151 | 78.4 | 43.1 | 92.1 | 60.8 | |||
| (n=40) | (n=22) | (n=47) | (n=31) | ||||