Assessment and Correlation of Salivary Ca, Mg, and pH in Smokers and Non-Smokers with Generalized Chronic Periodontitis oleh Saad Mohammad Alqahtani, Shankar T. Gokhale, Mohamed Fadul A. Elagib, Deepti Shrivastava, Raghavendra Reddy Nagate, Badar Awadh Mohammad Alshmrani, Abduaziz Mohammed Abdullah Alburade, Fares Mufreh Abdullah Alqahtani, Anil Kumar Nagarajappa, Valentino Natoli, Kumar Chandan Srivastava