Mardiah, A.; Nuraskin, C. A.; Salfiyadi, T.; Reca, R.; Rahmayani, L. .; Usrina, N.; Setya Ningsih, D. THE EFFICACY OF COCOA BEAN EXTRACT MOUTHWASH CONCENTRATION IN REDUCING PLAQUE INDEX IN THE ORAL CAVITY AMONG PRIMARY SCHOOL STUDENTS AT SDN KAYEE LEU, INGIN JAYA SUBDISTRICT, ACEH BESAR. Int. J. Res. Granthaalayah 2024, 12, 1–10.