| Variables | Categories | Frequency | Percentages |
| Procedure involved during injury (n=101)** | Injecting a patient Scaling and polishing Tooth extraction Root canal and planning Other |
34 26 16 15 10 |
34 26 16 15 10 |
| Instrument (n=101)** | Syringe needle Scaler Other |
53 31 17 |
52 31 17 |
| Department in which injury occurred (n=101)** | Oral health Periodontology Maxillofacial, and Oral Surgery Operative Other |
16 39 26 14 6 |
16 39 25 13 6 |
| Needle recapping (n=248) |
No Yes |
62 186 |
25 75 |