Table 4.

PES values depending on the time elapsed since surgery (number of implants, range [mean ± std. deviation])

Time between augmentation and examination	Total	Autograft	Allograft
All implants¥	n = 48	n = 33	n = 15
	2.5-12.8 (7.5 ± 2.6)	2.5-10.5 (7.5 ± 2.4)	2.5-12.8 (7.5 ± 2.6)
≤2 years	n = 8	n = 4	n = 4
	5.7-12.8 (8.1 ± 2.4)	5.7-12.8 (8.2 ± 3.2)	6.2-9.7 (8.0 ± 1.7)
>2 - ≤4 years	n = 13	n = 5	n = 8
	3.7-12.2 (8.4 ± 2.1)	6.5-12.2 (8.6 ± 2.2)	3.7-10.5 (8.3 ± 2.2)
>4 - ≤6 years	n = 11	n = 8	n = 3
	2.5-9.5 (6.5 ± 9.3)	4.0-9.5 (7.2 ± 2.0)	2.5-7.3 (4.8 ± 2.4)
>6 years	n = 16	n = 16	n = 0
	2.5-12.0 (7.2 ± 3.0)	2.5-12.0 (7.2 ± 3.0)

¥ Average of all assessments (three investigators and two evaluations).