Hikmah, N., J. J. Nugroho, N. Natsir, C. A. Rovani, and L. Mooduto. “Enamel Remineralization After Extracoronal Bleaching Using Nano-Hydroxyapatite (nha) from Synthesis Results of Blood Clam (anadara Granosa) Shells”. Journal of Dentomaxillofacial Science, vol. 4, no. 1, Apr. 2019, pp. 28-31, doi:10.15562/jdmfs.v4i1.691.