Comparison 1. Crown versus filling.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Major failure	3		Risk Ratio (M‐H, Random, 95% CI)	Subtotals only
1.1 Short term (less than 12 months)	1	76	Risk Ratio (M‐H, Random, 95% CI)	0.0 [0.0, 0.0]
1.2 Long term (12 months to 48 months)	3	346	Risk Ratio (M‐H, Random, 95% CI)	0.18 [0.06, 0.56]
2 Pain	2		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
2.1 Short term (less than 12 months)	1	64	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
2.2 Long term (12 months to 24 months)	2	312	Risk Ratio (M‐H, Fixed, 95% CI)	0.15 [0.04, 0.67]
3 Discomfort associated with the procedure	2	381	Risk Ratio (M‐H, Fixed, 95% CI)	0.56 [0.36, 0.87]
4 Gingival bleeding	2		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
4.1 Short term (less than 12 months)	2	226	Risk Ratio (M‐H, Fixed, 95% CI)	1.69 [0.61, 4.66]
4.2 Long term (12 months)	2	195	Risk Ratio (M‐H, Fixed, 95% CI)	1.74 [0.99, 3.06]