Table 8.

Comparison in the maxilla

	Number of study populations	Number of patients	Number of implants	Number of post‐loading implant losses	Total exposure time (implant years)	Estimated loss rate per 100 implant years [95% CI]	Estimated 3‐year implant survival (%) [95% CI]	Estimated 5‐year implant survival (%) [95% CI]	P‐value
Fixed vs. removable prostheses (category <4 implants excluded)
removable	6	84	334	25	1082.10	2.31 [1.56; 3.42]	93.30 [98.91; 99.41]	89.09 [84.28; 92.50]
fixed	14	363	2383	42	15060.08	0.28 [0.21; 0.38]	99.17 [98.87; 99.38]	98.62 [98.13; 98.97]	<0.0001
Removable: <4 implants vs. 4 implants
<4	5	49	133	46	636.90	7.22 [5.41; 9.64]	80.52 [74.88; 85.02]	69.70 [61.75; 76.30]
4	6	84	334	25	1082.10	2.31 [1.56; 3.42]	93.30 [90.25; 95.42]	89.09 [84.29; 92.50]	<0.0001
Fixed: ≥6 (no comparison feasible)
≥6	11	303	2057	37	13099.78	0.28 [0.20; 0.39]	99.16 [98.84; 99.39]	98.60 [98.07; 98.98]