| Author, Year | Reason for exclusion |
|---|---|
| Annamary et al. 20161 | 1 |
| Bubna et al. 20172 | 1 |
| Daniel et al. 20083 | 1 |
| Fox, Newton, 20064 | 1 |
| Fraiz, Macedo 20015 | 1 |
| Hass et al. 20166 | 1 |
| Ishikawa et al. 19847 | 1 |
| Karmakar et al. 20198 | 1 |
| Kominek, Rozkovcová, 19689 | 1 |
| Ozdas et al. 201710 | 1 |
| Pandiyan, Hedge 201711 | 4 |
| Pati, Nanda 201112 | 1 |
| Swallow et al. 197513 | 1 |
| Umamaheshwari et al. 201314 | 1 |
| Wali et al. 201615 | 3 |
| Welly et al. 201216 | 1 |
| Winer, 198217 | 2 |
Legend: 1—Studies with different objectives (n = 14), 2—Review (n = 1), 3—Studies that evaluate dentists’ perceptions (n = 1), 4—Studies that evaluate parents’ perceptions (n = 1)