Comparison 1. Behavioural intervention versus control.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 DMFS (prevented fraction)	1	60	Prevented Fraction (Random, 95% CI)	0.65 [0.12, 1.18]
2 Plaque	2		Std. Mean Difference (IV, Random, 95% CI)	Subtotals only
2.1 Change in plaque index (3‐4 months)	2	419	Std. Mean Difference (IV, Random, 95% CI)	‐0.51 [‐0.80, ‐0.21]