CXCL8 and periodontitis: The average salivary IL-8 levels found in chronic periodontitis and healthy controls reported by Teles et al.[68] were 2268 ± 111 and 1945 ±181 pg/ml, respectively, both of which would most likely be considered in the concentration range for OSCC by the two previous studies reported by St John et al. [23] and SahebJamee et al. [35].