Teeb. Yuav ua li cas koj xav kom lawv noj qab nyob zoo thiab zoo nkauj. Tab sis alas, cov neeg muaj hmoo uas tuaj yeem khav tau ntawm qhov no tuaj yeem suav rau ntawm tus ntiv tes. Tsis tsim nyog txhawj. Niaj hnub no, cov thev naus laus zis niaj hnub, uas suav nrog cov ntaub thaiv npog hauv kev kho hniav, tso cai rau cov txiaj ntsig zoo.
lawv yog dab tsi?
Cov ntaub ntawv sau rau qee qhov ua rau khaus khaus. Rau cov ntaub ntawv multicomponent, lub matrix tej zaum yuav lom. Tab sis qhov no tsis txhais hais tias tag nrho cov kev kho hniav muaj cov yam ntxwv irritating. Insulating pads hauv kev kho hniav yog siv tsis tsuas yog tshem tawm qhov cuam tshuam tsis zoo ntawm cov ntaub so ntswg xoob, tab sis kuj rau:
- tiv thaiv kab mob;
- tiv thaiv los ntawm cov khoom ntim uas tuaj yeem ua rau muaj kev puas tsuaj rau cov hniav;
- txo txoj kev pheej hmoo ntawm microcracking thaum lub sij hawm txhaws shrinkage.
Dab tsi yog qhov yuav tsum tau ua rau gaskets? Nov tsuas yog qee qhov ntawmlawv:
- Kev tiv thaiv ntev ntawm dentine los ntawm tshuaj tua kab mob
- Tiv thaiv enamel los ntawm qhov kub thiab txias.
- Kev tiv thaiv kev ua phem ntawm cov qaub ncaug.
- Kev cog lus rau tus hniav ntau dua qhov txhaws.
- Tsis cuam tshuam rau lub pulp.
- Yooj yim tso rau.
Muaj ob hom padding hauv kev kho hniav:
- thawj qhov kev xaiv yog qhov yooj yim (ib txheej ntawm ntau tshaj ib millimeter). Nws tiv thaiv cov tawv nqaij los ntawm sab nraud irritants, khaws cov duab ntawm kab noj hniav, thiab tseem yog ib feem tseem ceeb ntawm cov khoom kim dua.
- Qhov kev xaiv thib ob yog txheej nyias. Tsis muaj kev tiv thaiv kev tiv thaiv sab nraud. Muab kev sib raug zoo ntawm qhov txhaws thiab cov hniav.
Ntau pab pawg gaskets sawv tawm.
Zinc phosphate thiab polycarboxylate cements
thawj muaj cov tshuaj xws li zinc oxide, phosphoric acid. Lawv nyob rau hauv kev thov vim lawv pheej yig. Tab sis muaj qee qhov kev txwv rau lawv siv. Zinc-phosphate cements tsis tuaj yeem siv nyob ze rau ntawm cov tawv nqaij (qhov mob yog tsim nyob rau hauv cov ntaub so ntswg). Txhawm rau ua kom CFC tshuaj tua kab mob, tooj liab, nyiaj, thymol, bismuth ntxiv rau nws. Cov ntaub qhwv no yuav tsum tsis txhob siv rau cov kab mob sib sib zog nqus.
Qhov thib ob (peb tab tom tham txog opolycarboxylate cements) muaj zinc oxide, magnesium oxide thiab polyacrylic acid. Muaj ob pab pawg.
- CPC tov nrog dej.
- hmoov tov nrog acid.
Cov tshuaj no khi ruaj khov rau dentin thiab hlau thiab tsis ua rau cov tawv nqaij. Tus kws tshaj lij tsuas yog muab peb feeb tom qab sib tov siv cov khoom. ncua me ntsis - thiab kev sib txuas hardens.
Thaum ua tiav lawm, cov cement ci ntsa iab, nplaum thiab tuab.
Ntau me ntsis txog zinc phosphate cement
Nws suav nrog "Unifas 2". Nws yog siv los sau cov kwj dej, kho kev tsim kho.
Tshuaj xav tau rau:
- Kho cov hniav nrog pins, txuas hniav, inlays thiab crowns.
- Txhim kho ntawm cov khoom siv tes ua, hlau-ceramic thiab porcelain crowns.
- Kev kho hniav hauv qab cov hniav.
- Txheej rau lwm cov ntaub ntawv sau.
- Tau cov kwj dej.
Description of "Uniface 2":
- kev sib xyaw hmoov thiab kua;
- siab zog;
- zoo adhesion;
- low solubility;
- yas, siv tau yooj yim;
- radiopaque.
Siv:
Cement yog sib xyaw maj mam. Nws kav ob mus rau peb feeb. Tom qab sib tov, cov khoom khaws cia nws cov yas tsis pub ntau tshaj ib thiab ib nrab feeb. Nyob rau hauv kab noj hniav ntawm cov hniav, cov khoom hardens nyob rau hauv rau feeb.
iav ionomer cements
Insulating pads hauv kev kho hniav ntawm hom no yog siv ntau zaus. Lawv muaj ob hom:
- modern;
- classic.
Cia peb tham txog yav tom ntej kom meej ntxiv. Cov khoom xyaw: iav ua los ntawm txhuas, silicate, calcium ntxiv rau cov kua (polycarbonate acids). Txhua yam yog mechanically tov. Qhov zoo ntawm GIC cement:
- tawm fluoride tawm tsam caries thoob plaws hauv lub xyoo;
- zog;
- zoo adhesion tsis ziab thiab pickling;
- tsis ua rau lub plab;
- nqi qis.
Tam sim no rau qhov downsides:
- ntev hardening lub sij hawm - ib hnub;
- tsis tuaj yeem siv thaum muaj dej noo ntau dhau thiab qhuav;
- cov cement ntau dhau yuav tsum tsis txhob muab tshem tawm nrog kev xyaum.
Technology tsis nyob twj ywm. Txhawm rau kom tshem tawm cov teeb meem tshuaj pleev ib ce, niaj hnub kho hniav cement tau tsim. Nws muaj ib lub teeb curing resin. Xws li cov khoom yog hu ua hybrid. Nws khov thaum raug rau lub teeb. Cov sib tov niaj hnub no tsis yog li rhiab heev rau ya raws thiab overdrying. Tab sis koj siv tsis tau lawv li ntaub qhwv.
Insulating varnishes
Cov khoom no kuj tau siv hauv kev kho hniav. Lawv yog cov insulating gaskets. Nws muaj ib feem. Nws muaj pes tsawg leeg: polymer resin, hnyav, muab tub lim thiab tsis tshua muaj - tshuaj.
Varnishes yog siv los tiv thaiv cov tawv nqaij los ntawm cov co toxins ntawm cov ntaub ntawv sau, pom zoo rau caries tob thiab nruab nrab. Kev xyaum kho hniav qhia tau hais tias cov khoom tuaj yeem ua ke nrog lwm cov ntaub qhwv. Nws yog siv rau hauv qab thiab phab ntsa ntawm kab noj hniav. Tsuas yog tom qab ntawd, siv lub gasket los ntawm ntau hom khoom siv.
zoo:
- muaj cov kab mob bacteriostatic thiab bactericidal;
- txoov ntug rhiab;
- stimulates cov txheej txheem ntawm tes ntawm cov tawv nqaij;
- resistance to noo noo thiab "chemistry".
Cov ntsiab lus tsis zoo suav nrog:
- thermal insulating nyhuv tsis muaj zog. Qhov no tiv thaiv cov kua roj vanish los ntawm kev siv rau hauv qab ntawm cov kab noj hniav uas muaj corroded heev.
Daim ntawv thov. Lacquer yog siv rau cov hniav puas nrog ib tug nyias txhuam los yog paj rwb swab. Cov phab ntsa yog sib npaug nrog tus neeg sawv cev, qhuav nrog cua. Cov kua roj vanish yog siv rau hauv ob lossis peb txheej. Cov txheej tom ntej yog siv tom qab yav dhau los tau qhuav. Ib txheej tsis txaus - cov kua roj vanish yog txo, tawg daim ntawv.
Zoo kawg
Raws li koj tuaj yeem pom, ua tsaug rau cov thev naus laus zis tshiab hauv kev kho hniav, koj tuaj yeem rov qab tau koj lub ntsej muag zoo nkauj. Tsuas muaj ib qho "tab sis": kev ua haujlwm yuav tsum tau ua los ntawm tus kws tshaj lij uas muaj kev paub dhau los. Nws yuav ua txhua yam kom ntseeg tau tias koj cov hniav zoo dua. Lwm qhov taw qhia - qhov xav tau tshwm sim tsuas yog ua tiav yog tias qhov teeb meem tsis ua haujlwm.
Tsis txhob tso tseg mus ntsib kws kho hniav. Kev kho mob caries thaum ntxov yog tus yuam sij rau kev luag nyav Hollywood.
