Matendawa ndi amene amayambitsa mano. Zonsezi zimachokera ku matenda a bakiteriya komanso kusowa zakudya m'thupi ndipo zimatha kupewedwa. Bukuli limapereka njira yothandizira pobwezeretsa mano ndi nkhama zathanzi ndikuzisamalira, ndikugogomezera kwambiri kupewa. Kupewa ndiyo njira yokhayo komanso yotsika mtengo yosungira mano anu moyo wanu wonse. Bukuli limafotokozanso mwatsatanetsatane mikangano itatu yayikulu yomwe amakumana ndi ogula mano masiku ano: "kudzaza siliva" (amalgam), mankhwala osagwiritsa ntchito opaleshoni ya chingamu, ndi fluoride. Dr. David Kennedy waphunzitsa padziko lonse lapansi kwa madokotala a mano ndi akatswiri pa zamankhwala oteteza komanso obwezeretsa komanso zoopsa za mercury ndi fluoride, ndipo ndi Purezidenti wakale wa International Academy of Oral Medicine and Toxicology.
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