Taw qhia
Kev kho hniav niaj hnub tau hloov zuj zus mus ntau xyoo. Nrog rau kev nce qib ntawm thev naus laus zis thiab cov tswv yim, cov kws kho hniav tam sim no muaj peev xwm muab kev kho mob rau cov neeg mob uas muaj txiaj ntsig zoo, tsis mob, thiab kav ntev. Ib qho kev nce qib zoo li no yog kev siv cov khoom sib txuas hauv kev kho hniav. Bonding agents ua lub luag haujlwm tseem ceeb hauv kev tsim kom muaj kev sib raug zoo ntawm cov qauv hniav thiab cov khoom siv kho dua tshiab uas siv los kho nws. Nyob rau hauv tsab xov xwm no, peb yuav tshawb xyuas seb cov tshuaj tiv thaiv kab mob dab tsi thiab cov tshuaj tiv thaiv peb-kauj ruam siv hauv kev kho hniav.
Dab tsi yog bonding agents?
Bonding agents yog cov khoom siv los tsim kom muaj kev sib raug zoo ntawm cov hniav thiab cov khoom siv kho dua tshiab. Lawv ua hauj lwm los ntawm kev tsim ib tug micro-mechanical thiab tshuaj daim ntawv cog lus ntawm tus hniav qauv thiab cov khoom siv kho dua tshiab. Lawv yog siv los txhim kho qhov tuav ntawm cov khoom siv kho dua tshiab thiab tiv thaiv kev tawg thiab corrosion. Cov neeg ua haujlwm sib khi tau dhau los ua ib qho tseem ceeb ntawm kev kho hniav niaj hnub thiab tau siv ntau txoj hauv kev kho hniav, suav nrog kev sib txuas kom zoo nkauj, kev sib xyaw ua ke, cov plooj (porcelain veneers), thiab cov hniav hniav.
Peb-kauj ruam sib txuas cov neeg ua haujlwm
Peb-kauj ruam kev sib txuas cov neeg ua haujlwm yog ib hom kev sib koom ua ke uas yuav tsum muaj peb kauj ruam los tsim kom muaj kev sib raug zoo ntawm cov hniav thiab cov khoom siv kho dua tshiab. Lawv tseem hu ua etch-thiab-rinse bonding agents. Peb theem kev koom tes hauv kev sib koom ua ke yog etching, priming, thiab bonding.
Etching
Etching yog thawj kauj ruam hauv peb kauj ruam kev sib txuas. Nws koom nrog kev siv cov tshuaj acidic los tsim cov micro-mechanical bond ntawm cov hniav thiab cov khoom siv kho dua tshiab. Feem ntau siv cov kua qaub rau etching yog phosphoric acid, uas yog siv rau cov hniav nto rau ib lub sij hawm. Cov txheej txheem etching pab tsim kom muaj qhov ntxhib ntawm cov hniav, uas txhim kho cov khoom siv kho dua tshiab.
Priming
Tom qab etching, tus hniav nto yog rinsed thiab qhuav. Cov kauj ruam tom ntej yog priming. Priming koom nrog kev thov ntawm hydrophilic bonding resin rau cov hniav nto. Cov priming resin pab tsim cov tshuaj sib txuas ntawm cov hniav thiab cov khoom siv kho dua tshiab. Qhov hydrophilic xwm ntawm cov khoom sib txuas ua kom ntseeg tau tias nws tuaj yeem nkag mus rau qhov chaw etched thiab tsim kom muaj kev sib raug zoo.
Kev sib khi
Cov kauj ruam kawg nyob rau hauv peb-kauj ruam txheej txheem yog kev sib txuas lus. Bonding yuav siv tau ib daim ntawv cog lus rau cov hniav nto. Cov khoom sib txuas yog hydrophobic, uas txhais tau hais tias nws rov qab dej. Lub hydrophobic xwm ntawm cov khoom sib txuas ua kom ntseeg tau tias nws tuaj yeem khi nrog cov khoom siv hydrophobic. Cov khoom sib txuas yog kho nrog lub teeb tshwj xeeb, uas yuav pab tsim kom muaj kev sib raug zoo ntawm cov hniav thiab cov khoom siv kho dua tshiab.
Qhov zoo ntawm peb-kauj ruam sib txuas cov neeg ua haujlwm
Peb-kauj ruam sib txuas cov neeg ua hauj lwm muaj ntau yam zoo dua lwm cov neeg ua hauj lwm sib cog lus. Lawv tsim kom muaj kev sib raug zoo ntawm cov hniav thiab cov khoom siv kho dua tshiab, uas txhim kho cov khoom siv kho dua tshiab. Lawv kuj tiv thaiv kev tawg thiab corrosion ntawm cov khoom siv kho dua tshiab. Peb-kauj ruam sib txuas cov neeg ua haujlwm tau yooj yim siv thiab xav tau cov cuab yeej siv tsawg, ua rau lawv muaj kev xaiv zoo rau cov kws kho hniav.
Qhov tsis zoo ntawm peb-kauj ruam kev sib txuas cov neeg ua haujlwm
Peb-kauj ruam sib txuas cov neeg ua haujlwm muaj ob peb qhov tsis zoo. Lawv xav tau peb kauj ruam, uas tuaj yeem siv sijhawm ntev, tshwj xeeb tshaj yog thaum piv rau lwm tus neeg ua haujlwm sib txuas uas yuav tsum tau ua tsawg dua. Lawv kuj yuav tsum tau siv cov kua qaub etching, uas tuaj yeem tsim kev puas tsuaj rau cov hniav yog tias tsis ua kom raug. Tsis tas li ntawd, qee qhov kev sib txuas peb-kauj ruam yuav xav tau cov nplaum sib cais, uas tuaj yeem ua rau tus nqi tag nrho ntawm cov txheej txheem.
Xaus
Peb-kauj ruam sib txuas cov neeg ua haujlwm yog ib feem tseem ceeb ntawm kev kho hniav niaj hnub. Lawv muab txoj hauv kev txhim khu kev qha los tsim kom muaj kev sib raug zoo ntawm cov hniav thiab cov khoom siv kho dua tshiab. Thaum lawv muaj ob peb qhov tsis zoo, lawv qhov zoo dua lawv qhov tsis zoo. Raws li thev naus laus zis thiab cov txheej txheem txuas ntxiv mus, nws zoo li peb yuav pom kev txhim kho ntxiv hauv cov neeg ua haujlwm sib txuas, yog li txhim kho kev kho hniav zoo.