Hawley Setain yog lub sijhawm-kuaj cov khoom siv feem ntau siv tom qab kev zawm hniav lossis kev kho kom haum rau txoj haujlwm ntawm cov hniav, tiv thaiv kev nplua nuj. Tsim los ntawm Dr. Charles A. Hovley nyob rau hauv thaum ntxov xyoo pua 20, nws tus qauv tau tseem sib xws vim nws cov hauj lwm zoo.
Kev tsim qauv, nws nta kev cai acrylic lub hauv paus uas haum snugly tiv thaiv lub palate (rau sab saud ntawm cov hniav qis dua, muab cov khoom ruaj khov. Txuas nrog rau cov hauv paus no yog cov hlau hlau stainless hlau, uas qhwv ib ncig ntawm cov hniav postior (cov hniav mob lossis cov kab mob ua ntej tuav cov hniav anterior hauv lawv txoj hauj lwm ua ke.
Ib qho tseem ceeb kom nws hloov kho-orthodontists tuaj yeem hloov kho cov hlau kom kho cov khoom plig me, ib qho khoom tsis muaj nyob hauv cov kev ceev ceev ntau. Txawm li cas los xij, nws yog qhov pom tau ntau dua li cov kev xaiv meej thiab tej zaum yuav muaj kev cuam tshuam rau kev pib, txawm tias feem ntau cov neeg mob hloov kho sai. Kev saib xyuas kom zoo nrog cov txhuam hniav niaj hnub nrog cov txhuam hniav mos thiab zam kom cov dej kub uas tuaj yeem ntaus cov acrylic.
Feem ntau, cov neeg mob hnav nws puv sijhawm rau thawj ob peb lub hlis tom qab kev kho mob, tom qab ntawd hloov mus hmo ntuj hnav ib txwm muaj. Nws lub durability thiab kev hloov kho kom nws xaiv qhov kev xaiv ua kom muaj kev cia siab.