Frequency distributions of incipient lesion transitions during the study periods (↑ = worsened, ↔ = unchanged, ↓ = improved).

Table 4: Frequency distributions of incipient lesion transitions during the study periods (↑ = worsened, ↔ = unchanged, ↓ = improved).

Baseline-6 month	↑	↔	↓	OR^a	95% CI	p
Control (FL-gel)	3 (5.7)	39 (75.0)	12 (23.0)
FL-V	2 (3.3)	41 (69.4)	16 (27.1)	1.23	0.65-2.35	0.514
CHX-V	2 (3.7)	34 (52.9)	18 (33.3)	1.64	0.88-3.08	0.116
CPP-ACP	3 (5.8)	31 (60.7)	17 (33.3)	1.64	0.88-3.08	0.116
6 month-12 month	↑	↔	↓	OR^a	95% CI	p
Control (FL-gel)	3 (5.7)	45 (86.5)	3 (5.7)
FL-V	5 (8.4)	51 (86.4)	3 (5.0)	0.82	0.24-2.79	0.756
CHX-V	3 (5.5)	46 (85.1)	5 (8.4)	1.36	0.45-4.07	0.58
CPP-ACP	4 (7.8)	43 (84.3)	4 (7.8)	1.17	0.38-3.64	0.774

^aThe odds of lesion regressing with FL-V, CHX-V, CPP-ACP compared with the odds of lesion regressing with fluoride gel.