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Ama-burs amazinyo ayizinto ezibalulekile emkhakheni wodokotela wamazinyo, ikakhulukazi uma kukhulunywa ekusika i-dentin-yingxenye ebalulekile yamazinyo atholakala ngaphansi kwe-enamel. Ukusika kwe-dentin kudinga ukunemba nokusebenza kahle, futhi i-bur yamazinyo efanele ingathinta kakhulu emiphumeleni jikelele yezinqubo zamazinyo. Ukuqonda izici nokusetshenziswa kwamazinyo kungasiza bobabili ochwepheshe bamazinyo no-p