Effect of Subantimicrobial Dose Doxycycline Treatment on Gingival Crevicular Fluid Levels of MMP-9 and MMP-13 in Periodontitis Stage 2, Grade B in Subjects with Type 2 Diabetes Mellitus

Table 2

The change in mean MMP-9 conc. at different intervals.

	MMP-9			Test value^a	value	Sig.
	Baseline	1 month	3 months
	Group I							17.081	≤0.001	HS
Group II				67.734	≤0.001	HS
Test value^b	1.764	-2.409	-3.864
value	0.083	0.019	≤0.001

value > 0.05: nonsignificant; value < 0.05: significant; value < 0.01: highly significant. ^aRepeated measure ANOVA test; ^bindependent -test.