Table 4 Cost-effectiveness thresholds for preferability of six vs. four implants [in € per year of patient satisfaction]

Sensitivity analysis (one-way)

Patient satisfaction

Alternative scenario A (see Table 3)

863 €/y*

1,290 €/y*

1,682 €/y*

Alternative scenario B (see Table 3)

1,755 €/y*

2,624 €/y*

3,420 €/y*

Annual failure rate of denture w/o implants

Failure rate = 0.00

11,746 €/y*

17,564 €/y*

22,894 €/y*

Failure rate = 0.06

11,746 €/y*

17,564 €/y*

22,894 €/y*

Failure rate = 0.12

11,746 €/y*

17,564 €/y*

22,894 €/y*

Repair period satisfaction adjustment factor

Adjustment factor = 0.0

2,931 €/y*

4,382 €/y*

5,712 €/y*

Adjustment factor = 0.2

3,520 €/y*

5,263 €/y*

6,861 €/y*

Adjustment factor = 0.4

4,406 €/y*

6,588 €/y*

8,587 €/y*

Adjustment factor = 0.6

5,887 €/y*

8,803 €/y*

11,474 €/y*

Adjustment factor = 0.8

8,870 €/y*

13,263 €/y*

17,288 €/y*

Adjustment factor = 1.0

17,978 €/y*

26,882 €/y*

35,040 €/y*