Table 3. Bacterial Colony Count in the Study Groups .
| Group | No. of Teeth | Mean Colony Count (log10) ± SD |
| Pulpectomy without laser | 30 | 37.9 ± 1.61 |
| Pulpectomy with laser | 30 | 2.7 ± 1.94 |
| Without treatment (control) | 5 | 140.0 ± 0.99 |
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