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Kulimbikitsa gasi ndi zida zokhazikika
Amagwiritsidwa ntchito kupangira kuthamanga kwa gasi kukwaniritsa miyezo, kukhalabe ndi mavuto, komanso kupitiliza kwa magwiritsidwe. Khalidwe lake ndi chitetezo, chosavuta kunyamula komanso chosavuta kuyika, kuthamanga kwa gasi, zida zowongolera zokhazokha.
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Woteteza Kupanikizika Kwabwino
Mafotokozedwe malinga ndi momwe zinthu zilili, zomwezo zimagawidwa ndi chitsulo cha kaboni ndi enamel.
