Table 2.
Caries Arrest Rates at 6-, 12-, and 18-mo Follow-up Examinations.
| Group 1 (12%, Annual) | Group 2 (12%, Biannual) | Group 3 (38%, Annual) | Group 4 (38%, Biannual) | P Value | |
|---|---|---|---|---|---|
| All surfaces, n (%) | |||||
| Baseline | (n = 1,051) | (n = 1,072) | (n = 1,073) | (n = 1,024) | |
| 6 mo | 337/1,051 (32.1) | 346/1,072 (32.3) | 471/1,073 (43.9) | 449/1,024 (43.8) | <0.001 |
| 12 mo | 409/1,007 (40.6) | 502/1,046 (48.0) | 540/1,041 (51.9) | 618/987 (62.6) | <0.001 |
| 18 mo | 487/976 (49.9) | 566/1,028 (55.1) | 649/1,019 (63.7) | 701/953 (73.6) | <0.001 |
| Upper anterior teeth, n (%) | |||||
| Baseline | (n = 605) | (n = 612) | (n = 619) | (n = 585) | |
| 6 mo | 213/605 (35.2) | 208/612 (34.0) | 314/619 (50.7) | 284/585 (48.5) | <0.001 |
| 12 mo | 276/587 (47.0) | 331/596 (55.5) | 367/610 (60.2) | 403/565 (71.3) | <0.001 |
| 18 mo | 335/572 (58.6) | 382/582 (65.6) | 450/599 (75.1) | 447/543 (82.3) | <0.001 |
| Upper posterior teeth, n (%) | |||||
| Baseline | (n = 140) | (n = 140) | (n = 143) | (n = 138) | |
| 6 mo | 29/140 (20.7) | 33/140 (23.6) | 41/143 (28.7) | 56/138 (40.6) | 0.004 |
| 12 mo | 30/132 (22.7) | 44/138 (31.9) | 41/134 (30.6) | 67/133 (50.4) | <0.001 |
| 18 mo | 33/126 (26.2) | 55/138 (39.9) | 57/131 (43.5) | 74/128 (57.8) | <0.001 |
| Lower anterior teeth, n (%) | |||||
| Baseline | (n = 33) | (n = 26) | (n = 29) | (n = 27) | |
| 6 mo | 24/33 (72.7) | 17/26 (65.4) | 22/29 (75.9) | 16/27 (59.3) | 0.533 |
| 12 mo | 23/32 (71.9) | 19/26 (73.1) | 22/29 (75.9) | 23/27 (85.2) | 0.208 |
| 18 mo | 29/32 (90.6) | 21/26 (80.8) | 28/29 (96.6) | 25/26 (96.2) | 0.108 |
| Lower posterior teeth, n (%) | |||||
| Baseline | (n = 273) | (n = 294) | (n = 282) | (n = 274) | |
| 6 mo | 71/273 (26.0) | 88/294 (29.9) | 94/282 (33.3) | 93/274 (33.9) | 0.005 |
| 12 mo | 80/256 (31.3) | 108/286 (37.8) | 110/268 (41.0) | 125/262 (47.7) | 0.001 |
| 18 mo | 90/246 (36.6) | 108/282 (38.3) | 114/260 (43.8) | 155/256 (60.5) | <0.001 |