Table 2. Means of Streptococcus mutans [log(cfu)/mL] in dental biofilm adjacent to the brackets according to the orthodontic bonding material and sample collection time.
| Fuji-Ortho (n=15) | Transbond XT (n=14) | ||
|---|---|---|---|
| Collection time | Mean (S.D.) | Mean (S.D.) | p value |
| T7d | 2.70 (1.38) | 2.13 (0.94) | 0.13 |
| T21d | 3.27 (1.04) | 2.61 (1.05) | 0.10 |
| T35d | 3.35 (1.25) | 2.75 (1.14) | 0.36 |
| T49d | 3.31 (1.03) | 3.13 (1.30) | 0.72 |
T0 = before bracket bonding. T7d, T21d, T35d, T49d = 7, 21, 35, and 49 days after bracket bonding, respectively. The p values express the results of the Student’s t-test for comparison of the materials at each collection time.