From: Effect of microthread design on the preservation of marginal bone around immediately placed implants: a 5-years prospective cohort study
Time point
Test group
Mean ± SD (mm)
Control group
P value
1Â year
0.75 ± 0.32
0.71 ± 0.41
0.21
5Â year
1.12 ± 0.95
0.87 ± 0.78
0.461