International Journal of Implant Dentistry

Table 4 Comparison of mean bone levels (means ± SD) at different follow-up intervals in different implants diameters groups (2.75 and 3.25 mm)

From: Narrow implants (2.75 and 3.25 mm diameter) supporting a fixed splinted prostheses in posterior regions of mandible: one-year results from a prospective cohort study

Diameter 2.75 mm
Follow-up	Mean bone level changes (mm) (n = 69)	0–6 months (95% CI) (n = 67)	0–12 months (95% CI) (n = 67)	p inter-groups
Baseline	0.02 ± 0.07	−0.18 (−0.09; −0.27)	−0.47 (−0.27; −0.67)	p = 0.786
6 months	0.20 ± 0.12	p intra-group
12 months	0.49 ± 0.30	p < 0.0001	p < 0.0001
Diameter 3.25 mm
Follow-up	Mean bone level changes (mm) (n = 55)	0–6 months (95% CI) (n = 54)	0–12 months (95% CI) (n = 54)
Baseline	0.00 ± 0.11	−0.22 (−0.10; −0.34)	−0.48 (−0.25; −0.71)
6 months	0.22 ± 0.14	p intra-group
12 months	0.48 ± 0.33	p = 0.001	p < 0.0001

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