1. Ka taea te whakamahi i te mīhini hanga korehau aunoa katoa, te mana whakahaere atamai, te hanga tika, me te diaphragm me te matotoru rerekē.
2. Mahi tino whakapai ake, hanga aunoa katoa, kāore e hiahiatia he pūtake hau o waho, whakahaere atamai, penapena tikanga whakahaere, penapena pūngao me te whakaroa i te roa o te ratonga.
3. Mana whakaatu mamati atamai, ka taea te tiaki i te kaupapa whakahaere, te tango i te mahi matua, me te whai tautuhinga aratau tawhā hanga-roto hei whiriwhiri mā ngā kaiwhakamahi i te wā e mahi ana.
4. Ka taea te whakamahi i ngā diaphragm me ngā matotoru rerekē, ā, ka taea te huri i te taupoki hei whakahaere i te mahi.
5. Whakamahinga whānui
Te whakahāngai me te hanga i ngā whīra niho kua whakakorengia te tae, te whakahāngai me te hanga i ngā taputapu pupuri niho me ngā whitiki niho, te whakahāngai me te hanga i ngā paepae fluoride, me te whakahāngai me te hanga i ngā whāriki turanga rangitahi me te pumau me ngā whāriki tiaki niho.