pH DAN KAPASITAS BUFFER SALIVA DALAM HUBUNGANNYA TERHADAP PEMBENTUKAN KALKULUS PADA PASIEN DI INSTALASI PERIODONSIA RSGM USU: SALIVARY pH AND BUFFER CAPACITY RELATED TO CALCULUS FORMATION OF PATIENTS AT PERIODONTICS INSTALLATION IN USU DENTAL HOSPITAL. Dentika Dental J. [Internet]. 2014 Dec. 4 [cited 2026 Feb. 5];18(2):116-9. Available from: https://idjpcr.usu.ac.id/dentika/article/view/2014