| Zirconia implant | Titanium implant | P value |
---|---|---|---|
Mean ± SD | Mean ± SD | ||
Baseline | 2.7 ± 0.6 | 2.9 ± 0.7 | 1.000 |
6 Months | 2.9 ± 0.6 | 3.1 ± 0.7 | .218 |
12 Months | 3.2 ± 0.7 | 3.5 ± 0.6 | .330 |
2 Years | 3.6 ± 0.5 | 3.6 ± 0.5 | .395 |
5 Years | 3.3 ± 0.7 | 3.5 ± 0.6 | .364 |
P value |  < .001 |  |