Table 3.

Annual failure rates

	Failure rates considering previous losses [%]	Lost restorations (absolute numbers)	Remaining restorations (absolute numbers)
Baseline	–	–	70
1st year	10	7	63
2nd year	0	0	63
3rd year	4.76	3	60
4th year	5	3	57
5th – 10th year	24.56	14	43
10th – 15th year	18.60	8	35
15th – 20th year	5.71	2	33
20th – 23rd year	0	0	33