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Number of willingness-to-pay studies by each type of dental interventions
| Field of study | Number |
|---|---|
| Restorative and prosthodontics | 10 |
| Oral health care schemes or insurance | 9 |
| Orthodontics | 8 |
| Combination of two or more fields | 8 |
| Preventive interventions | 7 |
| Oral medicine (anesthetic drugs or injection methods) | 3 |
| Special care (dentin regeneration, fear treatment, sonic toothbrush) | 3 |
| Endodontics | 2 |
| Periodontics | 1 |
| Oral surgery | 1 |
