Rahaf Safadi, Riham Al-Safadi , Reef Al-Safadi , Zahra Al-Saigh , Maram Al-Otaibi , Hassan Al-Farraj , Fatimah Al-Otaibi , Amal Al-Abdulwahab, Yasmeen Al-Bagshi. “Relationship of Drinking Water to Dental Calculus in Saudi Arabia: Riyadh in Comparison to Eastern Province”. International Journal of Emerging Trends in Science and Technology, vol. 5, no. 06, June 2018, pp. 6637-45, doi:10.18535//ijetst/v5i6.03.