Witjaksono, W., Naing, L., Mulyawati, E., Samsudin, A. and Tin Oo, M. M. (2007) “Sealing ability of hydroxyapatite as a root canal sealer: in vitro study”, Dental Journal, 40(3), pp. 101–105. doi: 10.20473/j.djmkg.v40.i3.p101-105.