| Dry socket | Study group | Control group | Total | |||||
| N | % | N | % | N | % | |||
| No | 24 | 96.0 | 18 | 72.0 | 42 | 84.0 | ||
| Yes | 1 | 4.0 | 7 | 28.0 | 8 | 16.0 | ||
| Total | 25 | 100.0 | 25 | 100.0 | 50 | 100.0 | ||
| Fisher test | P = 0.048, RR = 2.04 (95%CI 1.31 - 3.15) | |||||||