Ngokomgaqo, kukho iindidi ezimbini zeebrashi zamazinyo zombane: ukujikeleza kunye nokungcangcazela.1. Umgaqo-siseko we-rotary toothbrush ulula, oko kukuthi, i-motor iqhuba intloko ye-brush ejikelezayo ukuba ijikeleze, eyandisa umphumo we-friction ngelixa uqhuba izenzo eziqhelekileyo zokuxubha.I-rotary toothbr...
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