Ib qho chaw muag khoom yog ib qho khoom plig kho hniav ntawm cov hniav tseem ceeb, tshwj xeeb yog khaws cov kab mob ntuj uas tau ploj mus tas li ntawm cov hniav {}}
Muaj ob txoj kev khaws cia ntawm qhov chaw khaws cia: tsau thiab tshem tawm cov kab mob hlau uas tau txuas nrog cov hniav uas ploj lawm, yog cov lingual av Ntau cov hniav tau koom nrog . nws yog U - Cov khoom siv xaim xaim hluav taws xob ruaj khov rau kev tu, lwm yam)
Qhov taw qhia rau ib qho chaw Retainer yog qhov tseeb - txiav . Thaum ib qho chaw sib luag, yog ib tus menyuam yaus ua ntej yuav mus tas mus li, lossis kev ua txhaum cai Qhov no tuaj yeem tsim cov kev kho mob ntau dua thiab kev cuam tshuam cov kws kho hniav ua kom pom kev kho hniav thiab kho kom huv si