Cov yam ntxwv ntawm cov hlua dig hniav feem ntau suav nrog cov hauv qab no:
Ntau yam ntaub ntawv: Rab hlua dig hniav feem ntau yog ua los ntawm cov khoom siv nylon, silk lossis polyester. Nylon hniav hlua dig hniav muaj kev coj hniav zoo, txhuam hniav dig hniav yog muag thiab xis, thiab polyester hniav dig hniav muaj lub zog siab. Ib qho ntxiv, muaj cov hlua dig hniav thiab dig hniav uas tsis yog ntaub dig hniav. Tus qub yog coated nrog ciab rau saum npoo, ua rau nws smoother thaum nkag mus rau cov hniav, thaum lub tom kawg tau tu cov nyhuv ntau dua thiab zoo dua.
Ntau yam duab: txoj hlua dig hniav suav nrog cov hlua dig hniav ib yam, cov hlua dig hniav, thiab cov hniav hneev. Cov hlua dig hniav ib puag ncig ntawm cov ntiv tes rau kev siv, cov hniav hniav hniav nrog kev tuav daim tawv, thiab cov ntaub hniav plaub hau yog zoo li cov hneev me me thiab yooj yim dua rau kev siv.
Kev tu cov nyhuv: txoj hlua dig hniav tuaj yeem tshem cov khoom noj uas seem thiab cov quav hniav, tiv thaiv cov kab mob thiab cov kab mob ncig. Nws yog tsim nyog rau kev ntxuav cov chaw interdental uas nyuaj rau kev txhuam hniav kom ncav cuag, txo qhov sib txuam ntawm cov quav hniav hniav.
Siv tau cov neeg muaj feem xyuam: kev dig hniav caj ces yog qhov tsim nyog rau cov neeg feem ntau, tshwj xeeb yog cov uas muaj cov hniav loj ntawm cov hniav lossis muaj teeb meem ntawm qhov ncauj. Siv hlua dig hniav puas tuaj yeem tsim kev nyiam kev kho hniav zoo thiab kev tiv thaiv qhov ncauj tiv thaiv kab mob. Lwm hom: ntxiv rau txoj hlua dig hniav puas meej, xws li cov hlua dig hniav ntxiv, cov hniav tsw qab, txiv hmab txiv ntoo tsw qab, thiab lwm yam.