Table 6:
Multivariate risk factor analysis for early implant failure using GEE (n=1852).
|
Variables |
Result |
|
|
|
|
Failure n (%) |
Success n (%) |
p-value |
PR (CI 95%) |
|
|
Gender |
|
|
|
|
|
Female |
42(4,6) |
880 (95,4) |
|
1 |
|
Male |
66 (7,1) |
864 (92,9) |
0,02 |
1,57 (1,08-2,29) |
|
Implant site |
|
|
|
|
|
Posterior mandibular |
36 (3,88) |
893 (96,1) |
|
1 |
|
Anterior maxillary |
27 (7,7) |
336 (92,0) |
0,003 |
2,26 (1,32-3,86) |
|
Posterior maxillary |
39 (8,2) |
436 (91,8) |
0,005 |
1,89 (1,22-2,96) |
|
Anterior mandibular |
6 (6,3) |
89 (93,7) |
0,23 |
1,70 (0,72-4,06) |
|
Number of implant/patient |
|
|
|
|
|
1-2 implant |
49 (5,5) |
839 (94,5) |
|
1 |
|
3-4 implant |
27 (5,6) |
459 (94,4) |
0,88 |
0,96 (0,61-1,53) |
|
5-6 implant |
27 (10,3) |
236 (89,7) |
0,07 |
1,58 (0,98-2,57) |
|
> 6 implant |
5 (2,3) |
210 (97,7) |
0,07 |
0,43 (0,17-1,08) |
|
Implant diameter |
|
|
|
|
|
Narrow (<3,75 mm) |
32 (4,9) |
615 (95,1) |
|
1 |
|
Medium (3,75-4,3 mm) |
66 (6,4) |
964 (93,6) |
0,95 |
0,98 (0,59-1,64) |
|
Wide (>4,3 mm) |
10 (5,7) |
165 (94,3) |
0,28 |
01,53 (0,71-3,34) |
|
Implant length |
|
|
|
|
|
Short (<10 mm) |
37 (7,7) |
446 (92,3) |
|
1 |
|
Medium (10-11,5 mm) |
52 (4,9) |
1019 (95,1) |
0,10 |
0,69 (0,44-1,07) |
|
Long (>11,5 mm) |
19 (6,4) |
279 (93,6) |
0,10 |
0,57 (0,30-1,12) |
|
Implant brand |
|
|
|
|
|
Ritter |
22 (15,0) |
125 (85,0) |
|
1 |
|
Nobel |
40 (5,6) |
673 (94,4) |
0,002 |
0,41 (0,24-0,72) |
|
MIS |
18 (4,5) |
382 (95,5) |
<0,001 |
0,32 (0,17-0,57) |
|
Dentis |
4 (9,1) |
40 (90,9) |
0,32 |
0,58 (0,20-1,69) |
|
Hitech |
1 (2,0) |
50 (98,0) |
0,07 |
0,15 (0,02-1,20) |
|
Straumann |
13 (7,9) |
152 (92,1) |
0,055 |
0,51 (0,25-1,01) |
|
Osstem |
6 (3,3) |
178 (96,7) |
0,001 |
0,19 (0,07-0,49) |
|
Neo |
4 (2,7) |
144 (97,3) |
0,004 |
0,18 (0,06-0,57) |
|
Bone augmentation |
|
|
|
|
|
No |
63 (5,2) |
1158 (94,8) |
|
1 |
|
Yes |
45 (7,1) |
586 (92,9) |
0,25 |
1,60 (0,72-3,60) |
|
Barrier membrane augmentation |
|
|
|
|
|
No |
66 (5,0) |
1268 (95,0) |
|
1 |
|
Yes |
42 (8,1) |
476 (91,9) |
0,58 |
0,76 (0,27-2,05) |
|
Internal sinus lift |
|
|
|
|
|
No |
99 (5,6) |
1668 (94,4) |
|
1 |
|
Yes |
9 (10,6) |
76 (89,4) |
0,53 |
1,40 (0,49-3,92) |