International Journal of Implant Dentistry

Table 1 Distribution of implants according to the period of observation

From: Retrospective analysis of 10,000 implants from insertion up to 20 years—analysis of implantations using augmentative procedures

Year	Number of implants	Relative number of implants (%)
<1	1920	18.9
1	1175	11.6
2	843	8.30
3	918	9.04
4	794	7.82
5	779	7.67
6	728	7.17
7	578	5.69
8	531	5.23
9	454	4.47
10	346	3.41
11	297	2.92
12	247	2.43
13	169	1.66
14	104	1.02
15	104	1.02
16	56	0.55
17	71	0.70
18	22	0.22
19	19	0.19
20	1	0.01
NA	2	0.02
Total	10158	100.0

NA observation period not clearly determinable

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