Rahaf Safadi, Reef Al-Safadi , Riham Al-Safadi , Ebtisam Al-Ghamdi , Hiyam AlMozayen , Shahad Al-Farraj , Wafa Binsaleh , Yara Al-Mutawa , Ghadah Al-Dossari. “Prevalence of First Permanent Molar Loss in a Population of Saudi Adolescents and Young Adults”. International Journal of Emerging Trends in Science and Technology, vol. 5, no. 04, Apr. 2018, pp. 6577-84, doi:10.18535//ijetst/v5i4.01.