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Kuwedzera gasi uye kudzikamisa michina
Inonyanya kushandiswa kuita gasi kumanikidza kusangana nematanho, chengetedza kugadzikana kumanikidza, uye kuenderera kwekugovera. Hunhu hunochengetedza, nyore kutakura uye nyore kuisa, kugadzikana gasi kumanikidza, otomatiki ekudzora michina.
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Positive uye Negative Pressure Mudziviriri
Rondedzero maererano nemamiriro chaiwo etsika, chinhu chakakamurwa kuita kabhoni simbi uye enamel.
