MMP9 and oral cavity squamous cell carcinoma: The study results showed that on comparison of MMP-9 levels in subjects with oralsquamous cell carcinoma from Group I mean salivary MMP-9 levels were 48.6 ± 5.5 ng/ml which was significantly higher whencompared to salivary MMP-9 levels in Group II (control) group subjects where it was 16.9 ± 4.6 ng/dl with p-value of <0.01.However, a non-significant difference and statistically comparable values were seen for serum MMP-9 levels in well-differentiated,moderately differentiated and poorly differentiated oral squamous cell carcinoma with p=0.07 (Table 2 - see PDF).