Table 8: Influence of different factors on marginal bone levels and bone loss. † not statistically significant different.

Procedure BL baseline
(mm ± SD)
BL 1 year
(mm ± SD)
Bone loss
(mm ± SD)
No
Extraction socket 0.2 ± 0.2 0.6 ± 0.3 0.5 ± 0.4 58
Non-extraction socket 0.2 ± 0.4† 0.8 ± 0.4† 0.6 ± 0.4† 85
Immediate load 0.3 ± 0.3 0.9 ± 0.4 0.6 ± 0.3 14
Non-immediate load 0.2 ± 0.3† 0.7 ± 0.4† 0.5 ± 0.4† 129
Split crest 0.3 ± 0.6 0.7 ± 0.4 0.3 ± 0.5 10
Non-split crest 0.2 ± 0.3† 0.7 ± 0.4† 0.5 ± 0.4† 133