Table 2.

Log-transformed mean bacterial anaerobic counts (SD) of culture-positive implants for the control and test group before (T_pre) and after (T_post) debridement and decontamination of the implant surface (intra-operative microbrush samples)

N = 40a	Total anaerobic bacterial load Log-transformed mean (SD)
	Tpre	Tpost	Difference	β (95% CI)b	p value
Control	5.57 (0.93) [17]	2.25 (2.98)c [7]d	2.68 (3.25)	−1.39 (−3.09–0.32)	0.108
Test	5.35 (0.98) [23]	0.81 (2.25)c [3]d	4.19 (3.31)

SD standard deviation, [n] number of culture-positive implants

^aImplants with baseline values of 0 excluded from analysis

^bLinear regression analysis, adjusted for baseline values

^cSignificant difference from baseline

^dSignificant difference in number of culture-positive implants after decontamination between test and control group (p = 0.042)