Ma silika wamba amagwiritsa ntchito: zonunkhira, siliva, mkuwa, mkuwa wa brokel, wakuda. Komabe, m'zaka ziwiri zapitazi, utawamba utotondo wayambanso kukhwima pang'onopang'ono, ndipo wayambanso kulandiridwa ndi anthu ochulukirapo. Ma electropropropting iyi imasinthika, mtundu wa gulu lililonse ndi losiyana. Koma kudula utawaleza ndi koyenera kutchuka, osati kwa enamel.
Post Nthawi: Jul-27-2020