CRP and periodontal disorder: Patients with RIOM had lower total protein level (p = 0.036), increased CRP (p < 0.001), worse dental status—edentulism, caries, and periodontal disease (p < 0.001)—, more frequently positive culture results (p < 0.001), more advanced lymph node metastases (p = 0.008), higher stage of cancer (p = 0.009), and shorter survival rate (p < 0.001).