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| Test | No. of studies | No. of participants |
|---|---|---|
| 1 All | 79 | 21283 |
| 2 Red fluorescence | 68 | 14514 |
| 3 Blue fluorescence | 20 | 3429 |
| 4 Green fluorescence | 9 | 3340 |
| 5 DIAGNOdent | 45 | 7320 |
| 6 DIAGNOdent pen | 32 | 6842 |
| 7 VistaProof | 17 | 2404 |
| 8 SoproLife | 3 | 1027 |
| 9 QLF | 9 | 3340 |
| 10 MidWest | 4 | 356 |
| 11 Combined visual/radiograph/DIAGNOdent | 1 | 160 |
